On Tue, May 03, 2011 at 07:39:37PM -0700, John Magolske wrote: > After updating the kernel on my ThinkPad from linux-image-2.6.28-grml > to linux-image-2.6.31-grml I've noticed cpu usage periodically jumping > from 600MHz to 1500MHz several times a minute. This is with not much > going on but Vim, Mutt & ELinks running in a screen session in a > framebuffer console. Top shows nothing under the %CPU column...I don't > see anything pass much beyond 1%. > > Any thoughts as to what could be causing this and/or suggested > techniques for determining the culprit would be much appreciated.
Has your CPU governor changed, perhaps, to something more 'twitchy'? Try: cat /sys/devices/system/cpu/cpu0/cpufreq/scaling_governor If this returns "ondemand", for example, the CPU will jump to a higher frequency more readily than, say "conservative". To change it, temporarily, echo one of the words in /sys/devices/system/cpu/cpu0/cpufreq/scaling_available_governors to /sys/devices/system/cpu/cpu0/cpufreq/scaling_governor and see whether that helps. > > Regards, > > John > > -- > John Magolske > http://B79.net/contact > > > -- > To UNSUBSCRIBE, email to debian-user-requ...@lists.debian.org > with a subject of "unsubscribe". Trouble? Contact listmas...@lists.debian.org > Archive: http://lists.debian.org/20110504023936.ga19...@s70206.gridserver.com >
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