Free i o software for linux

UnifiedIO allows to access files, primitive arrays and streams (even over HTTP) through same interface.
Main features:
- High performance
- Transparent buffering
- MemoryManager
- OpenFileManager (beta)
- uio based implementation of ImageInputStream and ImageOutputStream
- Bridge between RandomAccessFile world and InputStream/OutputStream world
- Access everything using one common interface
- Read/write direct from/into primitive arrays
- Optimized reading over http (only requesting the required data range of bytes - uses byteserving feature of http 1.1)
- Easy extensible design
- Unified I/O contains also many utilities:
- BitInputStream and BitOutputStream.
- PackBits, RLE4 and RLE8 decoder.
- base64 codec implementation.
- and many others.
- Unified I/O is an open source project and licensed under BSD
Enhancements:
- This release features a new buffering model and the ability to create child streams with shared or independent stream position.
- InputStreams was implemented on all primitive arrays.

fio is an I/O tool meant to be used both for benchmark and stress/hardware verification.
fio project has support for 4 different types of I/O engines (sync, mmap, libaio, posixaio), I/O priorities (for newer Linux kernels), rate I/O, forked or threaded jobs, and much more. It can work on block devices as well as files.
fio accepts job descriptions in a simple-to-understand text format. Several example job files are included. fio displays all sorts of I/O performance information, such as completion and submission latencies (avg/mean/deviation), bandwidth stats, cpu and disk utilization, and more.
Options:
$ fio
-s IO is sequential
-b block size in KiB for each io
-t < sec > Runtime in seconds
-r For random io, sequence must be repeatable
-R < on > If one thread fails to meet rate, quit all
-o < on > Use direct IO is 1, buffered if 0
-l Generate per-job latency logs
-w Generate per-job bandwidth logs
-f < file > Read < file > for job descriptions
Examples using a job file:
A sample job file doing the same as above would look like this:
[read_file]
rw=0
bs=4096
[write_file]
rw=1
bs=16384
And fio would be invoked as:
$ fio -o1 -s -f file_with_above
The second example would look like this:
[rf1]
rw=0
prio=6
[rf2]
rw=0
prio=3
[rf3]
rw=0
prio=0
direct=1
And fio would be invoked as:
$ fio -o0 -s -b4096 -f file_with_above
global is a reserved keyword. When used as the filename, it sets the default options for the threads following that section. It is possible to have more than one global section in the file, as it only affects subsequent jobs.
Enhancements:
- Support for replaying blktrace logs, full splice support (network and normal), adaptive latency histograms, many data verification improvements and additions, and many bugfixes and improvements.

Quick Look is a package to collect system statistics and output pretty graphics and (X)HTML pages.
Quick Look allows system administrators to have a quick look on the status of their systems, without going for a more advanced (and heavier) solution.
Main features:
- CPU and memory usage
- Load average and process spawning rates
- I/O operations
- Network traffic rates
- Tracked network connections

WxLib is a widely resuable C++ library that converts many facilities that are found in the standard C library into a form that is more appropriate for use in a C++ context.
The library wraps functions for dealing with threads, files, FIFOs, serial I/O, sockets, and directories. WxLib library focuses on the correct use of C++ functions, and especially on the correct use of error handling mechanisms.
Enhancements:
- Header files are now cleaner and more sensible.
- Number conversion functions were revised.
- Example files were revised.
- Many bugs were fixed.

IDEA85 project is an IDE and assembler for the 8085 microprocessor.
dea85 is a joint effort by Kasturi & Muthiah to develop a free [as in Freedom] IDE, Assembler and Simulator for the Intel 8085 microprocessor.
Hence it is licensed under the GNU GPL, and documentation is available under terms of the GNU FDL.
Main features:
- To provide a free & world class IDE for learning 8085 Assembley.
- To provide means to transfer/download code into ROM/RAM of a onboard 8085 system.
- To provide free and easy access to people interested in learning assembly language.
- To provide software simulators of peripheral I/O devices like 8255, 8155 , 16550 UART etc.

iogen is an I/O generator. iogen forks child processes that each run a mix of reads and writes. The idea is to generate heavily fragmented files to make the hardware suffer as much as possible.
This tool has been used to test filesystems, drivers, firmware, and hardware devices. It is by no means meant as a performance measuring tool since it tries to recreate the worst case scenario I/O.
This code was developed and tested on OpenBSD 3.8-current Dec 6 2005. This code should be POSIX compliant and therefore should compile on all well behaving UNIXi. If you are inclined to port this to another OS send me a diff and if it is good Ill merge it with the actual code.
Please note that I will not generate additional makefiles besides the example in the current version. The official Makefile is part of the OpenBSD ports tree and is non-portable. I will publish, ONLY under a BSD license, makefiles and diffs that enable iogen to run on other OSs on this website.
Enhancements:
- The Linux makefile was fixed.

JAMin is the JACK Audio Connection Kit (JACK) Audio Mastering interface. JAMin is an open source application designed to perform professional audio mastering of stereo input streams.
JAMin project uses LADSPA for digital signal processing (DSP).
Main features:
- Linear filters
- JACK I/O
- 30 band graphic EQ
- 1023 band hand drawn EQ with parametric controls
- Spectrum analyser
- 3 band peak compressor
- Lookahead brickwall limiter
- Multiband stereo processing
- Presets and scenes
- Loudness maximiser

UnifiedIO is a Java library providing random access to any data stream (even over HTTP), and giving a clear differentiation between read only and read/write access. Unified I/O is an open source project and is licensed under BSD.
Main features:
- High performance
- Transparent buffering
- MemoryManager
- (Open)FileManager (beta)
- uio based implementation of ImageInputStream and ImageOutputStream
- Bridge between RandomAccessFile world and InputStream/OutputStream world
- Access everything using one common interface
- Read/write direct from/into primitive arrays
- Optimized reading over http (only requesting the required data range of bytes - uses Byteserving feature of http 1.1)
- Easy extensible design
- Unified I/O contains also many utilities:
- BitInputStream and BitOutputStream.
- PackBits, RLE4 and RLE8 decoder.
- base64 codec implementation.
- and many others.