Date: Sat, 30 Sep 2006 17:38:43 -0500 From: Craig Boston <craig@feniz.gank.org> To: Kris Kennaway <kris@obsecurity.org> Cc: Paul Allen <pallen@ugcs.caltech.edu>, freebsd-stable@freebsd.org Subject: Re: CALL FOR TESTERS! [Re: 6.2 SHOWSTOPPER - em completely unusable on 6.2] Message-ID: <20060930223843.GB32120@nowhere> In-Reply-To: <20060930183906.GA76658@xor.obsecurity.org> References: <002201c6e290$45ece980$b3db87d4@multiplay.co.uk> <451BD89F.8080203@samsco.org> <451C1F6D.2020302@mail.uni-mainz.de> <7.0.1.0.0.20060928152807.17bbe448@sentex.net> <451C271A.9040904@samsco.org> <20060930011904.GA62626@nowhere> <20060930013439.GB62626@nowhere> <20060930014242.GB42433@xor.obsecurity.org> <20060930060535.GA3467@riyal.ugcs.caltech.edu> <20060930183906.GA76658@xor.obsecurity.org>
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On Sat, Sep 30, 2006 at 02:39:06PM -0400, Kris Kennaway wrote: > > > Which is odd since the hypothesis Scott was working on should have > > > shown up clearly in the mutex trace, but did not. > > > > But it is consistent with there being a beat-frequency problem with > > respect to the scheduler. I think the number you really need is not > > how long giant was held but how long was spent waiting for it. > > It also seemed to show that nothing was really waiting for it (the > cnt_* entries). I can set up a serial console an poke around in DDB during my test case if anyone thinks some useful information can be found. Unfortunately I'm remote from the machine right now so I won't be able to do that until Monday :/ Craig
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