I/O performance measurement and load generation tool
Spew is used to measure I/O performance of character devices, block devices,
and regular files. It can also be used to generate high I/O loads to stress
systems while verifying data integrity.
The spew package is used to test I/O performance and to generate load
on character devices, block devices, and file systems. It is similar
to the lmdd program found in the lmbench test-suite
(http://www.bitmover.com/lmbench). It is a bit easier to use than lmdd
and has some added functionality. For example, it can test both
random and sequential I/O.
There is a web-page for the spew proje
Changes since 1.0.7
* Fixed a build issue with Debian. The basename function is available on
* Fixed a problem with with reusing the same random seed for every
iteration. New seed is now used for every iteration.
Changes since 1.0.6
* Fixed a bug where the IOPS counter was not being reset between iterations
resulting in IOPS increasing after every interation.
* Fixed gc
This is the Spew FAQ. Any suggestions/corrections/etc should be
directed to email@example.com. The FAQ answers the following questions:
1) How do I get direct I/O working on RedHat Advanced Server 2.1?
2) Who came up with the names "Spew"?
3) How do I by-pass the buffer or disk cache to fin
SPEW(1) User Commands SPEW(1)
spew - measures
- Finish man pages
- HTML manual
- Fix building windows man-page
Spew AUTHORS (and CONTRIBUTORS)
Andrew Patterson <firstname.lastname@example.org>
GNU GENERAL PUBLIC LICENSE
Version 2, June 1991
Copyright (C) 1989, 1991 Free Softw
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