Messages in this thread | | | From | "Denys Fedoryshchenko" <> | Subject | nmi_watchdog killing tickless feature | Date | Tue, 25 Dec 2007 06:36:54 +0200 |
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Hi
Please CC me on reply, i am not subscribed to list.
I did small test, and notice that if nmi_watchdog is enabled mpstat 1
06:11:00 CPU %user %nice %sys %iowait %irq %soft %steal %idle intr/s 06:11:01 all 0.00 0.00 0.00 0.00 0.00 0.00 0.00 100.00 993.07 06:11:02 all 0.00 0.00 0.00 0.00 0.00 0.00 0.00 100.00 1007.00 06:11:03 all 0.00 0.00 0.00 0.00 0.00 0.00 0.00 100.00 1005.00
if disabled 06:13:52 CPU %user %nice %sys %iowait %irq %soft %steal %idle intr/s 06:13:53 all 0.00 0.00 0.00 0.00 0.00 0.00 0.00 100.00 1.00 06:13:54 all 0.00 0.00 0.00 0.00 0.00 0.00 0.00 100.00 9.00 06:13:55 all 0.00 0.00 0.00 0.00 0.00 0.00 0.00 100.00 4.00 06:13:56 all 0.00 0.00 0.00 0.00 0.00 0.00 0.00 100.00 2.00 06:13:57 all 0.00 0.00 0.00 0.00 0.00 0.00 0.00 100.00 2.00
The difference is huge, probably in power consumption too. Kernel is relatively standard (2.6.24-rc6-git1), if required i can attach .config If it is not bug, probably good to document, that it is killing powersaving features?
-- Denys Fedoryshchenko Technical Manager Virtual ISP S.A.L.
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