Re: 24 lost ticks with 2.6.20.10 kernel

From: Lee Revell
Date: Tue May 01 2007 - 20:07:12 EST


On 5/1/07, Kok, Auke <auke-jan.h.kok@xxxxxxxxx> wrote:
Michel Lespinasse wrote:
> (I've added the E1000 maintainers to the thread as I found the issue
> seems to go away after I compile out that driver. For reference, I was
> trying to figure out why I lose exactly 24 ticks about every two
> seconds, as shown with report_lost_ticks. This is with a DQ965GF
> motherboard with onboard E1000).

that's perfectly likely. The main issue is that we read the hardware stats every
two seconds and that can consume quite some time. It's strange that you are
losing that many ticks IMHO, but losing one or two might very well be.


Why do you have to disable all interrupts? Shouldn't it be sufficient
to disable interrupts on the e1000 only?

Lee
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/