Messages in this thread | | | Date | Thu, 8 Apr 2004 00:50:57 +0200 | From | Andrea Arcangeli <> | Subject | Re: -mmX 4G patches feedback [numbers: how much performance impact] |
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On Wed, Apr 07, 2004 at 03:54:27PM -0700, Martin J. Bligh wrote: > Or was this another workload, where gettimeofday wasn't the problem?
mysql is another common -30% slowdown where gettimeofday shouldn't be the problem. Any threaded application doing I/O should have major scalability problems with 4:4 regardless the tlb flushing frequency, the more cpus the biggest the hit (I should say mm_switch frequency [not tlb flush frequency] after my latest benchmark results) - 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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