mklatency
Section: (8)Updated: 0.1
Index
NAME
mklatency - Artificially create latency through a blocking driver
SYNTAX
DESCRIPTION
The program mklatency uses the blocksys driver to artificially create a system latency for testing purposes. It may, for example, be used to make sure that the cyclictest tool is, in fact, able to determine a system latency should one occur (see example).
OPTIONS
(none)FILES
blocksys.koEXAMPLES
The following commands to be entered from two separate root shells:Shell #1:
cyclictest -a -t -n -p99
Shell #2:
modprobe blocksys mklatency tail /var/log/messages [..] kernel: blocksys: CPU #0 will be blocked for 2000000 nops [..] kernel: blocksys: CPU #0 blocked about 1270 us
Shell #1: The cyclictest should have detected the generated latency.
AUTHORS
Carsten Emde <C.Emdeªosadl.org>
SEE ALSO
cyclictest(8)
Index
This document was created by man2html, using the manual pages.
Time: 07:46:51 GMT, May 30, 2009