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company name:
Jens Axboe
license: Freeware
minimum requirements: No special requirements.
functional limitations:
fio description
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.


$ 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:



And fio would be invoked as:

$ fio -o1 -s -f file_with_above

The second example would look like this:




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.. . Publisher of fio, Author of fio 1.35. fio is an IO tool meant to be used both for benchmark and stresshardware verification. fio project has support for 4 different types of IO engines (sync, mmap, libaio, posixaio), IO prioriti
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downloads 11
version 1.35
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