http://bugzilla.kernel.org/show_bug.cgi?id=13885 Summary: Performance decrease after suspend/resume to ram Product: Power Management Version: 2.5 Kernel Version: 2.6.30 Platform: All OS/Version: Linux Tree: Mainline Status: NEW Severity: normal Priority: P1 Component: Hibernation/Suspend AssignedTo: power-management_other@xxxxxxxxxxxxxxxxxxxx ReportedBy: marcinzwd@xxxxxxxxx CC: cpufreq@xxxxxxxxxxxxxxx Regression: Yes Kernel 2.6.30 (probably since 2.6.27) After suspend/resume there is a huge performance decrease on my notebook dell d630 with the CPU governor 'ondemand'. I attached a simple program checkperf.c to assess the performance and before suspend (or after reboot) I get time = 0.7050164938 s after suspend/resume time = 2.082638025 s Moreover if I decrease cpu clock e.g. (cpufreq-set -c 1 -u 2000MHz) (on second cpu core) then after suspend/resume I get 2.6GHz. -- Configure bugmail: http://bugzilla.kernel.org/userprefs.cgi?tab=email ------- You are receiving this mail because: ------- You are on the CC list for the bug. -- To unsubscribe from this list: send the line "unsubscribe cpufreq" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
