Messages in this thread | | | Subject | Re: Performance issue on dual Athlon MP | Date | Thu, 7 Mar 2002 23:44:27 +0000 (GMT) | From | Alan Cox <> |
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> BTW, this doesn't seem like a preemption issue, considering that throughput > is very definitely affected as well as latency. > > Anyway, please let me know if there's anything I can do, within my > constraints, to help. (As you can guess, though, I don't have any kernel > debugging experience.)
It sounds like the hit you are taking is from highmem and I/O (having to copy pages lower into memory so the I/O subsystem can use them). Some of that is in the hard to fix for 2.4 category with the x86. There are some experimental patches around but they are experimental. - 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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