Messages in this thread | | | From | "art" <> | Subject | cpufreq ondemand governor problem on SMP DUALCORE AMD | Date | Thu, 13 Jul 2006 00:20:37 -0500 |
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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/
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