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On Tue, 22 Apr 2003, Martin J. Bligh wrote: > Hmmm. When the machine is loaded up fully, this seems OK, but for lower > loads, it seems to have a significant degredation. This is on my normal > 16-way machine, no HT at all ... just checking for degredations. At a > guess, maybe it's bouncing stuff around between runqueues under low > loads? hm - it should not cause any change in the non-HT case. Oh, there's one thing that could make a difference on SMP - could you change AGRESSIVE_IDLE_STEAL back to 0? > Are there things embedded in here that change stuff for non-HT machines? not intentionally, but apparently there's some sort of effect. The idle steal thing could explain it. Ingo - 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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