Messages in this thread | | | Date | Sat, 17 Nov 2007 16:03:16 -0800 (PST) | Subject | Re: [NET]: rt_check_expire() can take a long time, add a cond_resched() | From | David Miller <> |
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From: Andi Kleen <andi@firstfloor.org> Date: Sat, 17 Nov 2007 13:56:08 +0100
> Arjan van de Ven <arjan@infradead.org> writes: > >> > > >> > Its not that cheap. The ChangeLog included my own numbers, on a > >> > Pentium M machine. (i686, 1.6 GHz, 1.5 GB ram) > >> > > >> > Without "if (need_resched())" (so calling need_resched() X.XXX.XXX > >> > times), each run takes 88ms > >> > > >> > With the extra check (and *much* less function calls), each run > >> > takes 25ms > > ms?!? The numbers sound wrong. Wrong unit?
Read what Eric is saying. He is saying "any entire run" purging the routing cache takes that long, not just one call. - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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