lkml.org 
[lkml]   [2006]   [Jul]   [13]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
From
Subjectcpufreq ondemand governor problem on SMP DUALCORE AMD
Date
2.6.18-rc1-git5-64-smp cpufreq ondemand governor problem on SMP DUALCORE AMD 
64bit system
- start 2 processes with infinite loop in each - OK both cores 100%
utilization cpu speed max
- kill one - BAD now one core utilization ~100% but cpu speed dropped to
core with lowest utilization - fluctuating from min at this level depending
on system activity.
any possibility to setup ondemand governor for max speed if only 1 core
utilization is maxed - full speed for single-process/single-thread activity
?
looks like cpufreq ondemand governor sets two frequency dependent cores to
speed level ok for that one with lowest utilization slowing down
process/thread working on other core. For now it is ok for independent
multiprocessor bad for multicore-freq-dependent.

xboom

art@usfltd.com

(observe cpu-freq and utilization
terminal-1: awk 'BEGIN {for(i=0;i<100000;i++)for(j=0;j<10000;j++);}'
terminal-2: awk 'BEGIN {for(i=0;i<100000;i++)for(j=0;j<10000;j++);}'
kill one awk)
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/

\
 
 \ /
  Last update: 2006-07-13 07:39    [W:0.024 / U:0.784 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site