lkml.org 
[lkml]   [2009]   [Jul]   [3]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
SubjectRE: [PATCH] scheduler: introduce SCHED_RESET_ON_FORK scheduling policy flag, Second try
From
Lennart  Hello
I had the same problem several years ago, but in the servers arena.
in order to solve it I partitioned the solution to two:
1. UNI processors machines
2. SMP processors machines

In UNI processor I created a RT kthread that polls over RTC device.
The observed jitter was 400us.
in SMP processors machine we created a new type of scheduling , called offline.
what i did it to offload a processor and assign it task. jitter is
250us under heavy load. solution is open source and can be found at :
http://sos-linux.svn.sourceforge.net/viewvc/sos-linux/offsched/Documentation/

Raz


\
 
 \ /
  Last update: 2009-07-03 14:35    [W:0.039 / U:3.668 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site