Messages in this thread |  | | Date | Tue, 17 Sep 2002 19:16:25 -0700 | From | Andrew Morton <> | Subject | Re: Info: NAPI performance at "low" loads |
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"David S. Miller" wrote: > > From: jamal <hadi@cyberus.ca> > Date: Tue, 17 Sep 2002 20:57:58 -0400 (EDT) > > I am not so sure with that 6% difference there is no other bug lurking > there; 6% seems too large for an extra two PCI transactions per packet. > > {in,out}{b,w,l}() operations have a fixed timing, therefore his > results doesn't sound that far off. > > It is also one of the reasons I suspect Andrew saw such bad results > with 3c59x, but probably that is not the only reason.
They weren't "very bad", iirc. Maybe a 5% increase in CPU load.
It was all a long time ago. Will retest if someone sends URLs. - 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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