Messages in this thread | | | Subject | Re: [Lse-tech] Re: (RFC): SKB Initialization | From | "Mala Anand" <> | Date | Fri, 23 Aug 2002 18:14:26 -0500 |
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Rick wrote.. >Note that Mala said "I measured the cycles for only the >initialization code in alloc_skb and __kfree_skb" which could mean that >even other parts of alloc_skb() or __kfree_skb() may have gotten worse >and you would not have known. Please look at my reply to Ben LeHaise which has the cycles for alloc_skb() and __kfree_skb(). You don't have to guess that.
> Later she admits, "As the scope of the >code measured widens the percentage improvement comes down" and finally >observes "We measured it in a web serving workload and found that we >get 0.7% improvement" which is practically in the noise. That was initial results which had more than the posted patch. We are still working on getting numbers.
>Dave's >observation was that it was slightly worse (0.35%). Are you basing this 0.35% degradation on your profile. According to Dave's SPECweb99 results there is a 2.97% improvement in simultaneous connections with my patch. Is that right Dave?
Regards, Mala
Mala Anand IBM Linux Technology Center - Kernel Performance E-mail:manand@us.ibm.com http://www-124.ibm.com/developerworks/opensource/linuxperf http://www-124.ibm.com/developerworks/projects/linuxperf Phone:838-8088; Tie-line:678-8088
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