Messages in this thread | | | Date | Tue, 26 Aug 2008 10:47:17 +0000 | From | Jarek Poplawski <> | Subject | Re: loaded router, excessive getnstimeofday in oprofile |
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On Tue, Aug 26, 2008 at 01:29:53PM +0300, Denys Fedoryshchenko wrote: > On Tuesday 26 August 2008, Jarek Poplawski wrote: > > > > This function is really used in many places, and these profiles are > > not enough at least to me, but it seems you could have a lot of > > softirqs (and probably hrtimers) scheduling, so maybe you should try > > if e.g. disabling hrtimers or changing kernel HZ makes any difference. > > > > Jarek P. > One user is shapers, it is ok for me.
The question is if you really need so exact shaping at a cost of higher system load.
> I am not sure, but maybe another user is softlockup debug option... and if > there is a lot of task switches maybe it will cause excessive load of timers > slow?
Maybe. Anyway, you could try if lower HZ (with longer jiffies) can help with processing more skbs without rescheduling.
Jarek P.
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