Date: Mon, 23 Aug 2004 14:17:30 -0400 From: Garance A Drosihn <drosih@rpi.edu> To: Doug White <dwhite@gumbysoft.com>, freebsd-current@freebsd.org Subject: Re: PLEASE TEST: IPI deadlock avoidance patch Message-ID: <p0611040ebd4fe0bd637c@[128.113.24.47]> In-Reply-To: <20040822115345.Y94593@carver.gumbysoft.com> References: <20040822115345.Y94593@carver.gumbysoft.com>
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At 12:05 PM -0700 8/22/04, Doug White wrote: >Hey folks, [...] please try this patch: > >http://people.freebsd.org/~dwhite/smp_rv_mtx.patch > >This patch avoids a deadlock between the smp_rendezvous() >mechanism and TLB shootdowns via pmap by forcing them to >share a mutex. I have completed a series of buildworlds with -j3 to -j10 with no problem. I then started up a "folding at home" client, and repeated the buildworlds. No panics, but in the second set I did have one buildworld (-j9) which failed with four processes apparently getting a "*** Signal 6". I am not sure what that was about. Note that all these builds were done with a `make' that was compiled to USE_KQUEUE , so maybe that's where the Signal's came from. In any case, the machine is still running fine, even after that heavy pounding. -- Garance Alistair Drosehn = gad@gilead.netel.rpi.edu Senior Systems Programmer or gad@freebsd.org Rensselaer Polytechnic Institute or drosih@rpi.edu
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