Date: Fri, 11 Sep 2009 22:05:15 -0400 From: Linda Messerschmidt <linda.messerschmidt@gmail.com> To: John Baldwin <jhb@freebsd.org> Cc: freebsd-hackers@freebsd.org Subject: Re: Intermittent system hangs on 7.2-RELEASE-p1 Message-ID: <237c27100909111905y244924c1n93b4e4d9ceda44be@mail.gmail.com> In-Reply-To: <200909111506.47309.jhb@freebsd.org> References: <237c27100908261203g7e771400o2d9603220d1f1e0b@mail.gmail.com> <200909111102.14503.jhb@freebsd.org> <237c27100909111035y544e8c91hc7726fd6ef16e351@mail.gmail.com> <200909111506.47309.jhb@freebsd.org>
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On Fri, Sep 11, 2009 at 3:06 PM, John Baldwin <jhb@freebsd.org> wrote: > Something like this: Ah, I understand now. :) Got up to 17 seconds of trace with that change. > Hmm. =A0It works well for me for doing traces. It definitely works, it just always seems to have some-or-another weird artifact. But, with the lock info added, the locks that show big ugly gaping multi-second "lock acquire" bars are: unp_mtx and so_rcv_sx. I'm not 100% confident in this data yet, so I will try to get more data to confirm, but if that offers any clues about where to look, I'm all ears. I'm also a bit hazy on what the dark grey vs. light grey background is abou= t. Thanks!
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