Re: 2.6.25.9: system clocks works normally then speeds up 4x...
From: Philippe Troin
Date: Fri Jul 11 2008 - 15:58:27 EST
Philippe Troin <phil@xxxxxxxx> writes:
> I've rebooted without noapic, and I will monitor and log these numbers
> and see how it goes.
So I've been monitoring local timer interrupts since the last reboot.
Last reboot was on July 9 at 3:14 PM.
I've been logging grep LOC /proc/interrupts every 10 seconds.
Initially, both CPUs log about 1000 LOC interrupts per second.
All of a sudden, CPU1 starts receving only 20 per second while CPU0
keeps getting its normal allotment of 1000 per second.
This is the time where it happens:
Thu Jul 10 12:13:59 PDT 2008: LOC: 75616236 75616322 Local timer interrupts
Thu Jul 10 12:14:09 PDT 2008: LOC: 75626255 75626341 Local timer interrupts
Thu Jul 10 12:14:19 PDT 2008: LOC: 75636275 75636360 Local timer interrupts
Thu Jul 10 12:14:29 PDT 2008: LOC: 75646293 75646379 Local timer interrupts
Thu Jul 10 12:14:39 PDT 2008: LOC: 75656312 75650462 Local timer interrupts
Thu Jul 10 12:14:49 PDT 2008: LOC: 75666355 75650857 Local timer interrupts
Thu Jul 10 12:14:59 PDT 2008: LOC: 75676378 75651251 Local timer interrupts
Thu Jul 10 12:15:09 PDT 2008: LOC: 75686403 75651645 Local timer interrupts
Thu Jul 10 12:15:19 PDT 2008: LOC: 75696420 75652039 Local timer interrupts
Thu Jul 10 12:15:29 PDT 2008: LOC: 75706439 75652433 Local timer interrupts
Thu Jul 10 12:15:39 PDT 2008: LOC: 75716476 75652827 Local timer interrupts
Thu Jul 10 12:15:49 PDT 2008: LOC: 75726495 75653221 Local timer interrupts
Thu Jul 10 12:15:59 PDT 2008: LOC: 75736514 75653615 Local timer interrupts
Thu Jul 10 12:16:09 PDT 2008: LOC: 75746548 75654009 Local timer interrupts
Thu Jul 10 12:16:19 PDT 2008: LOC: 75756573 75654403 Local timer interrupts
Phil.
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