Messages in this thread | | | Date | Tue, 18 May 99 14:13:22 EDT | From | Larry Sendlosky <> | Subject | Re: Great News!! Was: [RFT] 2.2.8_andrea1 wake-one |
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Hi Andrea,
Your 2.2.8 patch really helps apache performance on a single cpu system, but there is really no performance improvement on a 2 cpu SMP system.
I'm running Webstone 2.5 file tests on a DP264. Basically, Linux SMP without your patches gets maybe 5% better performance with 2 CPUs compared to only 1 CPU. With your 2.2.8 patches, single CPU performance increases about 14%, approaching Tru64 Unix performance levels on the same hardware. (Phil says he's seen the same with SpecWeb). However, there is no improvement with 2 CPUs. The only thing I see for the better (I can't Iprobe - it's not yet ported to EV6) is that user mode, as reported by vmstat, goes from about 18-19% to 23-24% (no patches vs your 2.2.8 patch).
larry
______________________________________________________________________ Larry Sendlosky AMT larry@scrugs.lkg.dec.com (978) 506-6640 Compaq ----------------------------------------------------------------------
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