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openMosix kernel-2.4.26
openMosix is a Linux kernel extension for single-system image clustering. more>>
openMosix is a Linux kernel extension for single-system image clustering. This kernel extension turns a network of ordinary computers into a supercomputer for Linux applications.
Once you have installed openMosix, the nodes in the cluster start talking to one another and the cluster adapts itself to the workload.
Processes originating from any one node, if that node is too busy compared to others, can migrate to any other node. openMosix continuously attempts to optimize the resource allocation.
We achieve this with a kernel patch for Linux, creating a reliable, fast and cost-efficient SSI clustering platform that is linearly scalable and adaptive. With openMosix Auto Discovery, a new node can be added while the cluster is running and the cluster will automatically begin to use the new resources.
There is no need to program applications specifically for openMosix. Since all openMosix extensions are inside the kernel, every Linux application automatically and transparently benefits from the distributed computing concept of openMosix.
The cluster behaves much as does a Symmetric Multi-Processor, but this solution scales to well over a thousand nodes which can themselves be SMPs.
The openMosix Community is very active, contributing add-on applications and sharing helpful information with all users. The openMosix Add-Ons and Community page lists these shared applications. And, it is all GPLd.
<<lessOnce you have installed openMosix, the nodes in the cluster start talking to one another and the cluster adapts itself to the workload.
Processes originating from any one node, if that node is too busy compared to others, can migrate to any other node. openMosix continuously attempts to optimize the resource allocation.
We achieve this with a kernel patch for Linux, creating a reliable, fast and cost-efficient SSI clustering platform that is linearly scalable and adaptive. With openMosix Auto Discovery, a new node can be added while the cluster is running and the cluster will automatically begin to use the new resources.
There is no need to program applications specifically for openMosix. Since all openMosix extensions are inside the kernel, every Linux application automatically and transparently benefits from the distributed computing concept of openMosix.
The cluster behaves much as does a Symmetric Multi-Processor, but this solution scales to well over a thousand nodes which can themselves be SMPs.
The openMosix Community is very active, contributing add-on applications and sharing helpful information with all users. The openMosix Add-Ons and Community page lists these shared applications. And, it is all GPLd.
Download (10MB)
Added: 2005-04-11 License: GPL (GNU General Public License) Price:
1663 downloads
SLAX Popcorn Edition 5.1.8
SLAX Popcorn Edition is a pocket operating system which fits even 128MB USB Flash Drives! more>>
SLAX Popcorn Edition is a pocket operating system which fits even 128MB USB Flash Drives! SLAX Popcorn Edition contains XFce desktop, Mozilla Firefox, Thunderbird, XMMS, AbiWord & Gaim.
This special modification of the SLAX live CD, Popcorn Edition, has been released after a week of beta testing.
Main features:
- XFce desktop
- Mozilla Firefox browser
- Mozilla Thunderbird mail client
- XMMS (in fact, its beep-media-player)
- Gaim (ICQ/AIM/etc client)
- MPlayer to play videos and to listen internet radio
- AbiWord text editor
SLAX is a small bootable CD containing the Linux operating system. It runs Linux directly from the CD (or USB) without installing.
The Live CD described here is based on the Slackware Linux distribution and is downloadable from this website as an ISO image.
The primary goal of SLAX is to provide a wide collection of useful software while keeping the cds image small enough to be written to a 185 MB CD-R(W) medium (small 8 cm CD). SLAX boots directly from the CD or USB devices and it provides a full featured Linux operating system.
All your available partitions and data storage devices (CD-ROM, USB storage devices, etc.) should be recognized at boot and should be mounted to /mnt/xx. As an example, "disc0part1" may be assigned to the first partition on your primary hard drive, "disc1part1" for your USB storage device, or "cdrom0" for your CD-ROM drive. SLAX will never write anything to the mounted devices. Mounting is safe and does not change the data.
After booting, you should be able to login as a "root", with the password "toor"; both without quotes, of course :)
When logged in, you have many options. At the shell prompt, you may start Midnight Commander (type "mc" to the console), play some music from your hard drive (type "play /mnt/path/file.mp3"), adjust your audio volume (type "alsamixer"), configure IP address (type "netconfig") or browse web pages with the text-based browser (type "lynx http://url").
To start the graphical environment included with SLAX, type "gui" (for graphical user interface). It will attempt to autoconfigure your graphics card, monitor, keyboard and mice, and if successful it will run an X session with KDE. Im pretty sure that you will know how to get around at this point. :-) Use "guisafe" instead of "gui" for safe-mode (VESA framebuffer) without autodetection.
In the unfortunate case your mouse doesnt work, try to move it for a few seconds to see if it will be autodetected. If it isnt, shut down Xwindow (press Ctrl+Alt+Backspace) and start it again. If this wont help then you are using something I have not included in the autoconfiguration process (COM2 mouse?). If you are comfortable with bash, or you atleast understand how to make your favorite mouse function under Linux, try to modify the symbolic link /dev/mouse manually.
If you dont like the autoconfigured screen resolution, refresh rate, or the K Desktop Environment, start "gui" with some additional options. Try for example "gui 800x600 60", where 800x600 is the desired screen resolution and 60 is the desired refresh rate. Fluxbox is one of the other window managers included and may be called with "guifast" or "gui fluxbox". In any event, type "gui --help" for more information.
All scripts and source code are available and can be used to build your own Live CD.
SLAX is available as an ISO image of the CD. It fits on small 8cm CD-R(W). Burn it with your favorite cd-writing software and then boot from the CD.
You might want to check your BIOS to assure its set to boot the CD prior the disc.
Enhancements:
- added KDE 3.5.4 with Slackware 11 fixes for media:/ URL in konqueror
- probeusb parameter now sleeps delay_use+1 seconds to wait for USB devices
- (this usually defaults to 6 seconds)
- fixed fuse libraries, which were missing in rc1 version
- added newest NTFS-3g beta version, NTFS writing now works, I hope
<<lessThis special modification of the SLAX live CD, Popcorn Edition, has been released after a week of beta testing.
Main features:
- XFce desktop
- Mozilla Firefox browser
- Mozilla Thunderbird mail client
- XMMS (in fact, its beep-media-player)
- Gaim (ICQ/AIM/etc client)
- MPlayer to play videos and to listen internet radio
- AbiWord text editor
SLAX is a small bootable CD containing the Linux operating system. It runs Linux directly from the CD (or USB) without installing.
The Live CD described here is based on the Slackware Linux distribution and is downloadable from this website as an ISO image.
The primary goal of SLAX is to provide a wide collection of useful software while keeping the cds image small enough to be written to a 185 MB CD-R(W) medium (small 8 cm CD). SLAX boots directly from the CD or USB devices and it provides a full featured Linux operating system.
All your available partitions and data storage devices (CD-ROM, USB storage devices, etc.) should be recognized at boot and should be mounted to /mnt/xx. As an example, "disc0part1" may be assigned to the first partition on your primary hard drive, "disc1part1" for your USB storage device, or "cdrom0" for your CD-ROM drive. SLAX will never write anything to the mounted devices. Mounting is safe and does not change the data.
After booting, you should be able to login as a "root", with the password "toor"; both without quotes, of course :)
When logged in, you have many options. At the shell prompt, you may start Midnight Commander (type "mc" to the console), play some music from your hard drive (type "play /mnt/path/file.mp3"), adjust your audio volume (type "alsamixer"), configure IP address (type "netconfig") or browse web pages with the text-based browser (type "lynx http://url").
To start the graphical environment included with SLAX, type "gui" (for graphical user interface). It will attempt to autoconfigure your graphics card, monitor, keyboard and mice, and if successful it will run an X session with KDE. Im pretty sure that you will know how to get around at this point. :-) Use "guisafe" instead of "gui" for safe-mode (VESA framebuffer) without autodetection.
In the unfortunate case your mouse doesnt work, try to move it for a few seconds to see if it will be autodetected. If it isnt, shut down Xwindow (press Ctrl+Alt+Backspace) and start it again. If this wont help then you are using something I have not included in the autoconfiguration process (COM2 mouse?). If you are comfortable with bash, or you atleast understand how to make your favorite mouse function under Linux, try to modify the symbolic link /dev/mouse manually.
If you dont like the autoconfigured screen resolution, refresh rate, or the K Desktop Environment, start "gui" with some additional options. Try for example "gui 800x600 60", where 800x600 is the desired screen resolution and 60 is the desired refresh rate. Fluxbox is one of the other window managers included and may be called with "guifast" or "gui fluxbox". In any event, type "gui --help" for more information.
All scripts and source code are available and can be used to build your own Live CD.
SLAX is available as an ISO image of the CD. It fits on small 8cm CD-R(W). Burn it with your favorite cd-writing software and then boot from the CD.
You might want to check your BIOS to assure its set to boot the CD prior the disc.
Enhancements:
- added KDE 3.5.4 with Slackware 11 fixes for media:/ URL in konqueror
- probeusb parameter now sleeps delay_use+1 seconds to wait for USB devices
- (this usually defaults to 6 seconds)
- fixed fuse libraries, which were missing in rc1 version
- added newest NTFS-3g beta version, NTFS writing now works, I hope
Download (115MB)
Added: 2006-10-09 License: GPL (GNU General Public License) Price:
1144 downloads
POE::Kernel 0.3502
POE::Kernel is an event driven threaded application kernel in Perl. more>>
POE::Kernel is an event driven threaded application kernel in Perl.
SYNOPSIS
POE comes with its own event loop, which is based on select() and written entirely in Perl. To use it, simply:
use POE;
POE can adapt itself to work with other event loops and I/O multiplex systems. Currently it adapts to Gtk, Tk, Event.pm, or IO::Poll when one of those modules is used before POE::Kernel.
use Gtk; # Or Tk, Event, or IO::Poll;
use POE;
or
use POE qw(Loop::Gtk);
or
use POE::Kernel { loop => "Gtk" };
use POE::Session;
Methods to manage the process global Kernel instance:
# Retrieve the kernels unique identifier.
$kernel_id = $kernel->ID;
# Run the event loop, only returning when it has no more sessions to
# dispatch events to. Supports two forms.
$poe_kernel->run();
POE::Kernel->run();
FIFO event methods:
# Post an event to an arbitrary session.
$kernel->post( $session, $event, @event_args );
# Post an event back to the current session.
$kernel->yield( $event, @event_args );
# Call an event handler synchronously. Bypasses POEs event queue
# and returns the handlers return value.
$handler_result = $kernel->call( $session, $event, @event_args );
Original alarm and delay methods:
# Post an event which will be delivered at a given Unix epoch time.
# This clears previous timed events with the same state name.
$kernel->alarm( $event, $epoch_time, @event_args );
# Post an additional alarm, leaving existing ones in the queue.
$kernel->alarm_add( $event, $epoch_time, @event_args );
# Post an event which will be delivered after a delay, specified in
# seconds hence. This clears previous timed events with the same
# name.
$kernel->delay( $event, $seconds, @event_args );
# Post an additional delay, leaving existing ones in the queue.
$kernel->delay_add( $event, $seconds, @event_args );
<<lessSYNOPSIS
POE comes with its own event loop, which is based on select() and written entirely in Perl. To use it, simply:
use POE;
POE can adapt itself to work with other event loops and I/O multiplex systems. Currently it adapts to Gtk, Tk, Event.pm, or IO::Poll when one of those modules is used before POE::Kernel.
use Gtk; # Or Tk, Event, or IO::Poll;
use POE;
or
use POE qw(Loop::Gtk);
or
use POE::Kernel { loop => "Gtk" };
use POE::Session;
Methods to manage the process global Kernel instance:
# Retrieve the kernels unique identifier.
$kernel_id = $kernel->ID;
# Run the event loop, only returning when it has no more sessions to
# dispatch events to. Supports two forms.
$poe_kernel->run();
POE::Kernel->run();
FIFO event methods:
# Post an event to an arbitrary session.
$kernel->post( $session, $event, @event_args );
# Post an event back to the current session.
$kernel->yield( $event, @event_args );
# Call an event handler synchronously. Bypasses POEs event queue
# and returns the handlers return value.
$handler_result = $kernel->call( $session, $event, @event_args );
Original alarm and delay methods:
# Post an event which will be delivered at a given Unix epoch time.
# This clears previous timed events with the same state name.
$kernel->alarm( $event, $epoch_time, @event_args );
# Post an additional alarm, leaving existing ones in the queue.
$kernel->alarm_add( $event, $epoch_time, @event_args );
# Post an event which will be delivered after a delay, specified in
# seconds hence. This clears previous timed events with the same
# name.
$kernel->delay( $event, $seconds, @event_args );
# Post an additional delay, leaving existing ones in the queue.
$kernel->delay_add( $event, $seconds, @event_args );
Download (0.032MB)
Added: 2006-07-12 License: Perl Artistic License Price:
1200 downloads
Install Kernel 0.9.3
Install Kernel is an advanced script which installs the kernel and sets up LILO or GRUB. more>>
Install Kernel interfaces with the Linux operating system by running a series of functions or groups of commands that automate the compiling or recompiling and installation process.
Install Kernel project consists of three groups of functions: building the kernel and moving files, checking dependencies, and editing the boot loader configuration file. Grouping all of the functions in these three groups makes maintaining and altering the script much easier.
Install Kernel can also be considered a program, because a program does checking and makes choices accordingly. A script is usually a file, which contains a certain number of commands with no logic in mind. Therefore, while ik is technically a script, it can also be called a program.
Dependency checks are to make sure the current system configuration and settings are properly setup before proceeding with the kernel build. There are seven dependency checks, they are: a root check, space check, link check, boot check, boot loader check, configuration check, and a module check.
First, the root check makes sure the user is a super user; which means they are capable of editing important system files only accessible to the root account. The space check makes sure there is at least 200 megabytes available.
The kernel source these days is around 150 megabytes just for the source code. When one compiles the kernel, it may increase the size to 50 megabytes or more. Therefore, ik
checks for at least 200MB available in order to successfully compile the kernel without running out of space. Next, it is not required, but it is standard to have a symbolic link of /usr/src/linux pointing to /usr/src/linux-x.y.z.
The fourth check makes sure the user has a /boot directory, this is where the Linux kernel files will be installed to. The fifth check determines the bootloader that will be used. There are two main boot loaders in Linux. LILO and GRUB are the two most popular for booting the operating system.
This check accurately finds whether the kernel was booted from either LILO or GRUB by checking which bootloader was used last. It then tells the rest of the script to edit the correct one accordingly. The sixth configuration check is to make sure users have created a proper kernel configuration file, which is used in the process of building the Linux kernel.
The final check is a module check, if modules are turned off, the script will determine this and alter the installation process to install with no module support. The main idea behind the depdency checks is to make sure the user cannot damage his or her system if they do not do something right.
The installation process also contains seven functions. The installation process is usually several commands. However, because of the differences that can occur in a users configuration file, each part of the building process must be checked and the building process may need to be altered.
The first function makes sure the dependencies are setup correctly for all files in the kernel source tree. The second function deletes stale object files and or old kernel files. Next, the third function is the kernel build function; this function runs a command to build the Linux kernel. Next, functions four and five make and install modules if the user had specified module support in his or her kernel configuration file.
The sixth function moves the Linux kernel and its System dependency map to the boot partition. The last function of the build process sets up module dependencies for the new kernel if modules were defined. The installation process also includes a small error check for each part of the kernel build process.
If any part of the kernel build process fails; the script will abort, not modifying any boot loader configuration files. This is important; because if it did not abort, it may alter the boot loader configuration files, thus rendering the system unbootable. It is important to support every Linux configuration possible because of the wide use of this script.
The boot loader configuration and setup process is probably the most important aspect of installing a new kernel. An improper boot loader configuration may leave one with system that does not boot; or simply does not boot the new kernel.
It is also important, as some systems may have two or more boot loaders installed. There are four functions defined for this process. The first function uses the boot loader, which was defined during the configuration checks. The second function defines where the LILO or GRUB configuration files are located.
Next, depending on which boot loader is found, either LILO or GRUB configuration files are edited automatically by sed. Sed is a stream editor, which edits a file with no user intervention. If user intervention were required, the user would have to be present between certain parts of the kernel installation. With ik, it makes efficient use of a users time because only one command needs to be entered to complete the entire installation and setup process.
Install Kernel is a useful tool for those who are new to Linux, rebuild their kernel often, or value their time. It reduces the commands for installing the kernel from about thirteen to one. Users new to Linux may find this attractive.
This is because the entire process is automated; and if something is not correct, in most cases ik will notify the user what is incorrect, and how to fix the error. On the other side, for experienced users who do not wish to spend valuable time installing a new kernel, this is also very handy. Install Kernel is efficient by requiring no user intervention and reducing time spent on kernel installs, and effective by giving new to Linux the option for an easy kernel upgrade.
Enhancements:
- Updated to work with the newer version of coreutils for head and tail.
- The MAKE_JOBS directive has been removed in favor of make -j2 to prevent make from spawning hundreds of jobs if /proc/cpuinfo did not exist.
<<lessInstall Kernel project consists of three groups of functions: building the kernel and moving files, checking dependencies, and editing the boot loader configuration file. Grouping all of the functions in these three groups makes maintaining and altering the script much easier.
Install Kernel can also be considered a program, because a program does checking and makes choices accordingly. A script is usually a file, which contains a certain number of commands with no logic in mind. Therefore, while ik is technically a script, it can also be called a program.
Dependency checks are to make sure the current system configuration and settings are properly setup before proceeding with the kernel build. There are seven dependency checks, they are: a root check, space check, link check, boot check, boot loader check, configuration check, and a module check.
First, the root check makes sure the user is a super user; which means they are capable of editing important system files only accessible to the root account. The space check makes sure there is at least 200 megabytes available.
The kernel source these days is around 150 megabytes just for the source code. When one compiles the kernel, it may increase the size to 50 megabytes or more. Therefore, ik
checks for at least 200MB available in order to successfully compile the kernel without running out of space. Next, it is not required, but it is standard to have a symbolic link of /usr/src/linux pointing to /usr/src/linux-x.y.z.
The fourth check makes sure the user has a /boot directory, this is where the Linux kernel files will be installed to. The fifth check determines the bootloader that will be used. There are two main boot loaders in Linux. LILO and GRUB are the two most popular for booting the operating system.
This check accurately finds whether the kernel was booted from either LILO or GRUB by checking which bootloader was used last. It then tells the rest of the script to edit the correct one accordingly. The sixth configuration check is to make sure users have created a proper kernel configuration file, which is used in the process of building the Linux kernel.
The final check is a module check, if modules are turned off, the script will determine this and alter the installation process to install with no module support. The main idea behind the depdency checks is to make sure the user cannot damage his or her system if they do not do something right.
The installation process also contains seven functions. The installation process is usually several commands. However, because of the differences that can occur in a users configuration file, each part of the building process must be checked and the building process may need to be altered.
The first function makes sure the dependencies are setup correctly for all files in the kernel source tree. The second function deletes stale object files and or old kernel files. Next, the third function is the kernel build function; this function runs a command to build the Linux kernel. Next, functions four and five make and install modules if the user had specified module support in his or her kernel configuration file.
The sixth function moves the Linux kernel and its System dependency map to the boot partition. The last function of the build process sets up module dependencies for the new kernel if modules were defined. The installation process also includes a small error check for each part of the kernel build process.
If any part of the kernel build process fails; the script will abort, not modifying any boot loader configuration files. This is important; because if it did not abort, it may alter the boot loader configuration files, thus rendering the system unbootable. It is important to support every Linux configuration possible because of the wide use of this script.
The boot loader configuration and setup process is probably the most important aspect of installing a new kernel. An improper boot loader configuration may leave one with system that does not boot; or simply does not boot the new kernel.
It is also important, as some systems may have two or more boot loaders installed. There are four functions defined for this process. The first function uses the boot loader, which was defined during the configuration checks. The second function defines where the LILO or GRUB configuration files are located.
Next, depending on which boot loader is found, either LILO or GRUB configuration files are edited automatically by sed. Sed is a stream editor, which edits a file with no user intervention. If user intervention were required, the user would have to be present between certain parts of the kernel installation. With ik, it makes efficient use of a users time because only one command needs to be entered to complete the entire installation and setup process.
Install Kernel is a useful tool for those who are new to Linux, rebuild their kernel often, or value their time. It reduces the commands for installing the kernel from about thirteen to one. Users new to Linux may find this attractive.
This is because the entire process is automated; and if something is not correct, in most cases ik will notify the user what is incorrect, and how to fix the error. On the other side, for experienced users who do not wish to spend valuable time installing a new kernel, this is also very handy. Install Kernel is efficient by requiring no user intervention and reducing time spent on kernel installs, and effective by giving new to Linux the option for an easy kernel upgrade.
Enhancements:
- Updated to work with the newer version of coreutils for head and tail.
- The MAKE_JOBS directive has been removed in favor of make -j2 to prevent make from spawning hundreds of jobs if /proc/cpuinfo did not exist.
Download (0.004MB)
Added: 2006-05-24 License: GPL (GNU General Public License) Price:
1249 downloads
LIDS 2.2.3 RC1 (for kernel 2.6.21)
LIDS (Linux Intrusion Detection System) is a kernel patch and admin tools which enhances the kernels security. more>>
LIDS (Linux Intrusion Detection System) is a kernel patch and admin tools which enhances the kernels security by implementing Mandatory Access Control (MAC).
When it is in effect, chosen file access, all system network administration operations, any capability use, raw device, memory, and I/O access can be made impossible even for root. You can define which programs can access specific files.
It uses and extends the system capabilities bounding set to control the whole system and adds some network and filesystem security features to the kernel to enhance the security.
You can finely tune the security protections online, hide sensitive processes, receive security alerts through the network, and more. LIDS currently support kernel 2.6, 2.4.
<<lessWhen it is in effect, chosen file access, all system network administration operations, any capability use, raw device, memory, and I/O access can be made impossible even for root. You can define which programs can access specific files.
It uses and extends the system capabilities bounding set to control the whole system and adds some network and filesystem security features to the kernel to enhance the security.
You can finely tune the security protections online, hide sensitive processes, receive security alerts through the network, and more. LIDS currently support kernel 2.6, 2.4.
Download (0.30MB)
Added: 2007-08-15 License: GPL (GNU General Public License) Price:
801 downloads
xlike Kernel Patchset 0.20f
xlike Kernel Patchset is a patch collection for the Linux vanilla kernel. more>>
xlike Kernel Patchset is a patch collection for the Linux vanilla kernel. The project includes as many stable enhancements for the Linux kernel as possible.
These include code from Kernel Mode Linux, Rule Set Based Access Control, Novell AppArmor, Openswan, grsecurity, Linux VServer, Ndiswrapper, web100, Nefilters, Suspend2, Speakup, Amiga Smart File System, Cdemu, SquashFS, fbsplash, QuadDSP, and more. It also contains many drivers and fixes.
Enhancements:
- This version was updated to patch against Linux 2.6.20.
- User Mode Linux with Linux-PHC, LinuxIMQ, Web100, WANPIPE, WRR, ReiserFS4, SquashFS, UnionFS, Bootsplash, and Kernel Color Output were added.
<<lessThese include code from Kernel Mode Linux, Rule Set Based Access Control, Novell AppArmor, Openswan, grsecurity, Linux VServer, Ndiswrapper, web100, Nefilters, Suspend2, Speakup, Amiga Smart File System, Cdemu, SquashFS, fbsplash, QuadDSP, and more. It also contains many drivers and fixes.
Enhancements:
- This version was updated to patch against Linux 2.6.20.
- User Mode Linux with Linux-PHC, LinuxIMQ, Web100, WANPIPE, WRR, ReiserFS4, SquashFS, UnionFS, Bootsplash, and Kernel Color Output were added.
Download (0.45MB)
Added: 2007-08-22 License: GPL (GNU General Public License) Price:
793 downloads
Linux Kernel Monitor 0.3 Alpha
Linux Kernel Monitor is a tool for monitoring and managing linuxs kernel. more>>
Linux Kernel Monitor is a tool for monitoring and managing linuxs kernel. It has been developed for GNOME, using Glib and Gtk libraries in C language.
lkmonitor tries to offer detailed information of the characteristics of the system, as type of cpu, state of the memory or the file system registered in kernel.
lkmonitor is an open source project with information about the source code and software architecture to make easy the development of new characteristics.
Enhancements:
- IO information, kernel information, networking info, processes specific information, filesystems, modules, etc.
<<lesslkmonitor tries to offer detailed information of the characteristics of the system, as type of cpu, state of the memory or the file system registered in kernel.
lkmonitor is an open source project with information about the source code and software architecture to make easy the development of new characteristics.
Enhancements:
- IO information, kernel information, networking info, processes specific information, filesystems, modules, etc.
Download (0.084MB)
Added: 2007-07-30 License: GPL (GNU General Public License) Price:
816 downloads
Cache colouring task_struct and kernel stack 2.5.0-0.5
This helps cache-colours both task_struct and kernel stack using a slab allocator for task_struct and initial stack pointer jittering for kernel stack. more>>
Cache colouring task_struct and kernel stack 2.5.0-0.5 is really useful for it is designed to cache-colours both task_struct and kernel stack.
This patch cache-colours both task_struct and kernel stack using a slab allocator for task_struct and initial stack pointer jittering for kernel stack. An extra structure is defined for task_struct allocations as long as a new init task structure.
By using three stack color bits, eight colors will be used for initial stack frame pointer jittering that should be enough for most cache architectures. Care has to be taken in increasing too much STACK_COLOUR_BITS because this can lead to kernel stack overflows, e.g. a STACK_COLOUR_BITS set to 4 with a cache line size of 128 bytes like P4 will result in a maximum jitter of 2048 bytes by leaving only 6 Kb for the kernel stack.
<<less Added: 2008-04-08 License: GPL Price: FREE
1 downloads
Linux Kernel Spinlock Metering 1.4.11
Linux Kernel Spinlock Metering is a kernel patch that allows you to build an i386, ia64, Alpha, Sparc64, or mips64 kernel... more>>
The Linux SMP kernel uses spinlocks to protect data structures from concurrent, potentially conflicting accesses. Linux Kernel Spinlock Metering is a kernel patch that allows you to build an i386, ia64, Alpha, Sparc64, or mips64 kernel that can perform simple "metering" (record-keeping) of spinlock usage. Also available is source for an associated new command, lockstat, that is used to instruct the kernel to turn this lock metering on or off, and to retrieve the metering data from the kernel and display it in a human-readable format.
Data displayed includes the number of lock attempts, per-spinlock per-caller, the number of those attempts that were immediately successful vs. those that required the attempting locker to wait for the current lock-holder to release; the mean and max hold-time, and the mean, max, and cumulative wait-time. Whenever possible, the locking caller and the spinlocks are identified by their symbolic names, not by their virtual addresses.
Various patch sets are available. Version 1.1.4 patches the 2.2.14 kernel and reflects a relatively old flavor of Lockmeter. Version 1.4.11 patches the 2.4.16, 2.4.17, 2.5.3, and 2.5.5 kernels, and the previous release v1.4.9 patches various other releases of the 2.4.x kernel. This version 1.4 supports i386, alpha, ia64, mips64, and sparc64. The most recent version 1.5 is available as a patch against the 2.4.18 and various 2.5.x kernels, and it additionally supports mips (32-bit mips). Each is approximately 22 KB in gziped size. (Patches against a few older kernel versions are also available in the old subdirectory.) After applying the appropriate patch, make oldconfig presents a new Kernel lock metering option in the Kernel hacking subsection -- although only if CONFIG_SMP (Symmetric multi-processing support) has been enabled. The spinlock metering code is compiled into the kernel only when this new option is turned on.
Compiling the spinlock metering code into the kernel does not materially affect the kernel size because the additional code is roughly compensated for by the shrinking effect of the normally in-line locking routines now becoming procedure calls. A metering-capable kernel (i.e., with the patch applied, but data collection turned off) is negligibly slower than a non-metering-capable kernel, though a metering-capable kernel does slow when the metering data collection is turned on using the lockstat command (typically 8% for a systime==25% workload). Care has been taken to minimize performance degradation, and further improvements are in progress.
The lockstat command must also be downloaded, compiled, and installed. lockstat is a privileged command that requires root access. It reads and writes to the node /proc/lockmeter to control the kernels metering as follows:
lockstat on enables the kernels metering data collection,
lockstat options displays the collected data, and
lockstat off disables the metering data collection.
Run lockstat with no arguments to see a verbose description of the command arguments and options.
When metering is enabled, count and time data is collected in malloced arrays that are private to each CPU, thereby avoiding costly cacheblock coherency operations that would otherwise be required if all CPUs updated the same count and time fields. The lockstat command accumulates and sorts the per-cpu data at display time.
Lockmetering attempts to provide both "cause" and "effect" information about spinlock usage. The "hold time" metering exposes which spinlocks are being held and for how long, identified by where they are held inside the kernel. The "wait-time" metering exposes the effects of these hold-times when multiple CPUs concurrently contend for the same lock.
<<lessData displayed includes the number of lock attempts, per-spinlock per-caller, the number of those attempts that were immediately successful vs. those that required the attempting locker to wait for the current lock-holder to release; the mean and max hold-time, and the mean, max, and cumulative wait-time. Whenever possible, the locking caller and the spinlocks are identified by their symbolic names, not by their virtual addresses.
Various patch sets are available. Version 1.1.4 patches the 2.2.14 kernel and reflects a relatively old flavor of Lockmeter. Version 1.4.11 patches the 2.4.16, 2.4.17, 2.5.3, and 2.5.5 kernels, and the previous release v1.4.9 patches various other releases of the 2.4.x kernel. This version 1.4 supports i386, alpha, ia64, mips64, and sparc64. The most recent version 1.5 is available as a patch against the 2.4.18 and various 2.5.x kernels, and it additionally supports mips (32-bit mips). Each is approximately 22 KB in gziped size. (Patches against a few older kernel versions are also available in the old subdirectory.) After applying the appropriate patch, make oldconfig presents a new Kernel lock metering option in the Kernel hacking subsection -- although only if CONFIG_SMP (Symmetric multi-processing support) has been enabled. The spinlock metering code is compiled into the kernel only when this new option is turned on.
Compiling the spinlock metering code into the kernel does not materially affect the kernel size because the additional code is roughly compensated for by the shrinking effect of the normally in-line locking routines now becoming procedure calls. A metering-capable kernel (i.e., with the patch applied, but data collection turned off) is negligibly slower than a non-metering-capable kernel, though a metering-capable kernel does slow when the metering data collection is turned on using the lockstat command (typically 8% for a systime==25% workload). Care has been taken to minimize performance degradation, and further improvements are in progress.
The lockstat command must also be downloaded, compiled, and installed. lockstat is a privileged command that requires root access. It reads and writes to the node /proc/lockmeter to control the kernels metering as follows:
lockstat on enables the kernels metering data collection,
lockstat options displays the collected data, and
lockstat off disables the metering data collection.
Run lockstat with no arguments to see a verbose description of the command arguments and options.
When metering is enabled, count and time data is collected in malloced arrays that are private to each CPU, thereby avoiding costly cacheblock coherency operations that would otherwise be required if all CPUs updated the same count and time fields. The lockstat command accumulates and sorts the per-cpu data at display time.
Lockmetering attempts to provide both "cause" and "effect" information about spinlock usage. The "hold time" metering exposes which spinlocks are being held and for how long, identified by where they are held inside the kernel. The "wait-time" metering exposes the effects of these hold-times when multiple CPUs concurrently contend for the same lock.
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Added: 2007-07-03 License: GPL (GNU General Public License) Price:
845 downloads
gnome-kernel-manager 0.0.1
gnome-kernel-manager is a tool for managing kernel modules and more. more>>
gnome-kernel-manager is a tool for managing kernel modules and more.
gnome-kernel-manager is a gui for managing the kernel modules, .... Only Linux kernel is supported.
Main features:
- Shows the list of loaded modules.
- Shows the list of all installed modules.
- Shows information about modules.
- Supports (un)loading modules.
<<lessgnome-kernel-manager is a gui for managing the kernel modules, .... Only Linux kernel is supported.
Main features:
- Shows the list of loaded modules.
- Shows the list of all installed modules.
- Shows information about modules.
- Supports (un)loading modules.
Download (0.27MB)
Added: 2007-07-26 License: GPL (GNU General Public License) Price:
824 downloads
Kernel Version Monitor 0.5
Kernel Version Monitor is a Superkaramba theme that creates a widget displaying the current version information of the kernel. more>>
Kernel Version Monitor is a Superkaramba theme that creates a widget displaying the current version information of the Linux kernel as put forth by the kernel.org RSS feed here: http://kernel.org/kdist/rss.xml . Kernel Version Monitor uses the Tux icon from the nuoveXT icon theme found at http://nuovext.pwsp.net
Kudos and thanks to Richard "Ricardo" Szlachta for his advice on refining the aesthetics of this theme.
This is my first Superkaramba theme and a work in progress. I would love to hear comments, opinions and suggestions in order to improve this theme.
<<lessKudos and thanks to Richard "Ricardo" Szlachta for his advice on refining the aesthetics of this theme.
This is my first Superkaramba theme and a work in progress. I would love to hear comments, opinions and suggestions in order to improve this theme.
Download (0.025MB)
Added: 2006-06-29 License: GPL (GNU General Public License) Price:
1213 downloads
suser-jengelh Kernel Patchset 2.6.22.1-ccj51
suser-jengelh Kernel Patchset is a patch collection for the Linux kernel. more>>
suser-jengelh Kernel Patchset is a patch collection for the Linux kernel. suser-jengelh Kernel Patchset includes code from a lot of projects, such as ttyrpld, MultiAdmin, parts of NF POM, cdfs, unionfs, and various accumulated bugfixes still not present in the vanilla kernel.
Enhancements:
- New netfilter modules (xt_TRACE, xt_connlimit, xt_u32, xt_gateway, xt_TARPIT, xt_time) and tproxy4 have been added.
- A number of patches have been outsourced to standalone packages.
<<lessEnhancements:
- New netfilter modules (xt_TRACE, xt_connlimit, xt_u32, xt_gateway, xt_TARPIT, xt_time) and tproxy4 have been added.
- A number of patches have been outsourced to standalone packages.
Download (1.6MB)
Added: 2007-08-05 License: GPL (GNU General Public License) Price:
814 downloads
Alphagate Systems Kernel Patchset 2.6-AS23
Alphagate Systems Kernel Patchset is a patch collection for the Linux kernel. more>>
Alphagate Systems Kernel Patchset provides new technologies and features, standard enhancements, as well as trivial-but-necessary fixes, that have not yet made it into the mainline (vanilla) Kernel.
So on one side, you get the next-gen code, while retaining stability is of concern. We choose SUSE Kernels because it is another stage of quality assurance that things do work reasonably.
2.6-AS22 is based on 2.6.15, which is quite a jump from 2.6.13. Certain things are missing because they are not available yet, such as TPROXY support. Because of this, AS21 and AS22 were released at the same time.
Components:
- Netfilter: IMQ, ROUTE, SYSRQ, TARPIT, XOR, connlimit, layer7, nth, random, u32, rICMP
- ttyrpld 2.10 rpldev
- CDFS 2.6.12
- BalaBit TPROXY 2.0.2 for 2.6.13
- SquashFS 2.2, +xmagic, +scan4it extensions
- UnionFS 20051130
- QuadDSP 1.2 - 4-channel audio output tools
- MultiAdmin 1.0.3
- THKD for Toshiba harddisks
- cdemu 0.7
- NDISwrapper 1.7
- RaLink RT2X00 drivers
- snd-pcsp audio driver and pcspkr emergency sound upon Oops, Panic or BUG
- Partition display upon rootfs mismount
- Boot time improvement by nosynchro RTC
- Visual plus: AS CKO, PureVGA, BSDUnderline, Con Loglevel, pipesize stat
- various /proc hardeners
- various small fixes (incl. UTF-8 console compose and userspace greediness fix)
- mouse button swap
- Staircase 13.2 provided (but not activated by default)
Enhancements:
- Unionfs, tproxy, sonypi, sony_acpi, the staircase scheduler, full preemption, and some other minor parts were updated.
<<lessSo on one side, you get the next-gen code, while retaining stability is of concern. We choose SUSE Kernels because it is another stage of quality assurance that things do work reasonably.
2.6-AS22 is based on 2.6.15, which is quite a jump from 2.6.13. Certain things are missing because they are not available yet, such as TPROXY support. Because of this, AS21 and AS22 were released at the same time.
Components:
- Netfilter: IMQ, ROUTE, SYSRQ, TARPIT, XOR, connlimit, layer7, nth, random, u32, rICMP
- ttyrpld 2.10 rpldev
- CDFS 2.6.12
- BalaBit TPROXY 2.0.2 for 2.6.13
- SquashFS 2.2, +xmagic, +scan4it extensions
- UnionFS 20051130
- QuadDSP 1.2 - 4-channel audio output tools
- MultiAdmin 1.0.3
- THKD for Toshiba harddisks
- cdemu 0.7
- NDISwrapper 1.7
- RaLink RT2X00 drivers
- snd-pcsp audio driver and pcspkr emergency sound upon Oops, Panic or BUG
- Partition display upon rootfs mismount
- Boot time improvement by nosynchro RTC
- Visual plus: AS CKO, PureVGA, BSDUnderline, Con Loglevel, pipesize stat
- various /proc hardeners
- various small fixes (incl. UTF-8 console compose and userspace greediness fix)
- mouse button swap
- Staircase 13.2 provided (but not activated by default)
Enhancements:
- Unionfs, tproxy, sonypi, sony_acpi, the staircase scheduler, full preemption, and some other minor parts were updated.
Download (40MB)
Added: 2006-01-18 License: GPL (GNU General Public License) Price:
1375 downloads
OpenVZ kernel 2.6.16-1.2111_FC5.026test012 (Fedora Core 5)
OpenVZ project is an Operating System-level server virtualization solution, built on Linux. more>>
OpenVZ is a modified Linux kernel with additional support for OpenVZ Virtual Private servers (VPS).
VPSs are isolated, secure environments on a single physical server, enabling better server utilization and ensuring that applications do not conflict.
Each VPS performs and executes exactly like a stand-alone server; VPSs can be rebooted independently and have root access, users, IP addresses, memory, processes, files, applications, system libraries, and configuration files. OpenVZ is a subset of Virtuozzo.
Enhancements:
- Updated to the latest FC5 kernel and the latest OpenVZ kernel (including the checkpointing/live migration feature).
<<lessVPSs are isolated, secure environments on a single physical server, enabling better server utilization and ensuring that applications do not conflict.
Each VPS performs and executes exactly like a stand-alone server; VPSs can be rebooted independently and have root access, users, IP addresses, memory, processes, files, applications, system libraries, and configuration files. OpenVZ is a subset of Virtuozzo.
Enhancements:
- Updated to the latest FC5 kernel and the latest OpenVZ kernel (including the checkpointing/live migration feature).
Download (14MB)
Added: 2006-05-19 License: GPL (GNU General Public License) Price:
1253 downloads
OpenVZ kernel 2.6.18-8.1.4.el5 028stab035.1 (RHEL5 2.6.18)
OpenVZ project is an Operating System-level server virtualization solution, built on Linux. more>>
OpenVZ is a modified Linux kernel with additional support for OpenVZ Virtual Private servers (VPS).
VPSs are isolated, secure environments on a single physical server, enabling better server utilization and ensuring that applications do not conflict.
Each VPS performs and executes exactly like a stand-alone server; VPSs can be rebooted independently and have root access, users, IP addresses, memory, processes, files, applications, system libraries, and configuration files. OpenVZ is a subset of Virtuozzo.
Enhancements:
- Re-based on the RHEL5 8.1.4 kernel.
- Mainstream security fixes.
- Many improvements, some optimizations, and many fixes here and there (CFQ, NFS, UBC, CPT, FUSE, ioprio, and fairsched). DRBD has been updated to 8.0.3. Xen/OpenVZ fixes to run RHEL5 in Dom0/U, and fixes for SPARC and PPC.
<<lessVPSs are isolated, secure environments on a single physical server, enabling better server utilization and ensuring that applications do not conflict.
Each VPS performs and executes exactly like a stand-alone server; VPSs can be rebooted independently and have root access, users, IP addresses, memory, processes, files, applications, system libraries, and configuration files. OpenVZ is a subset of Virtuozzo.
Enhancements:
- Re-based on the RHEL5 8.1.4 kernel.
- Mainstream security fixes.
- Many improvements, some optimizations, and many fixes here and there (CFQ, NFS, UBC, CPT, FUSE, ioprio, and fairsched). DRBD has been updated to 8.0.3. Xen/OpenVZ fixes to run RHEL5 in Dom0/U, and fixes for SPARC and PPC.
Download (MB)
Added: 2007-06-15 License: GPL (GNU General Public License) Price:
529 downloads
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