Date: Wed, 23 Feb 2005 13:20:55 +0000 (GMT) From: Robert Watson <rwatson@FreeBSD.org> To: current@FreeBSD.org Subject: Kernel profiling on a dual xeon with HTT leads to wedge? Message-ID: <Pine.NEB.3.96L.1050223131645.68237L-100000@fledge.watson.org>
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I tried to turn on high precision kernel profiling on a dual Xeon box with HTT (so four logical processors) at work today. Unfortunately, whenever I do so, it seems to wedge hard within a few seconds. I can typically hit enter on the serial console maybe 4-6 times before it hangs pretty solidly (serial break doesn't work). I don't remember having this problem before, but when I backed the kernel out fo Feb 7, Jan 1, Dec 1, and Nov 1 the problem remained. I'm wondering if maybe I had HTT off on the box previously, but can't turn it off remotely currently so can't try that now. Does anyone else have kernel profilng working with >2 physical/logical processors? Robert N M Watson
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