Date: Wed, 29 Sep 2004 10:24:03 -0400 From: Stephan Uphoff <ups@tree.com> To: Peter Holm <peter@holm.cc> Cc: "freebsd-arch@freebsd.org" <freebsd-arch@freebsd.org> Subject: Re: scheduler (sched_4bsd) questions Message-ID: <1096467843.3733.1145.camel@palm.tree.com> In-Reply-To: <20040929085748.GA19695@peter.osted.lan> References: <1095468747.31297.241.camel@palm.tree.com> <1095529353.31297.1192.camel@palm.tree.com> <1096135220.53798.17754.camel@palm.tree.com> <20040926075218.GA85983@peter.osted.lan> <1096339936.3733.279.camel@palm.tree.com> <20040928074926.GA99957@peter.osted.lan> <1096383103.3733.312.camel@palm.tree.com> <20040929085748.GA19695@peter.osted.lan>
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On Wed, 2004-09-29 at 04:57, Peter Holm wrote: > On Tue, Sep 28, 2004 at 10:51:43AM -0400, Stephan Uphoff wrote: > > On Tue, 2004-09-28 at 03:49, Peter Holm wrote: > > > The system still freezes and can be unfrozen by a ping: > > > http://www.holm.cc/stress/log/stephan.html > > > > Could you try the sched_userret_patch in addition to the switch_patch? > > ( Patch is in email to arch on 25 September with the subject > > "sched_userret priority adjustment patch for sched_4bsd" > > > > Done. > > > Are you running with the current GENERIC configuration? > > ( If not could you send me your config file?) > > > > Yes. GENERIC + BREAK_TO_DEBUGGER. > > > My debug target is currently diskless - I will reconfigure it later this > > week and hopefully will be able to reproduce your freezes. > > > > Thanks > > > > Stephan > > Sorry for the late reply, but I ran into a few other problems along the way: Late reply? !!! What late reply? Are you trying to scare me? ;-) > http://www.holm.cc/stress/log/cons79.html > http://www.holm.cc/stress/log/cons80.html > > It's hard for me to tell if your patch has made any difference. > The freeze is still there. I'll try to make the same test once more > without your patches to see if I get the same pattern in freezes. I found some problems yesterday with mutex priority inheritance that could potentially cause your freeze patterns. I will try to roll a preliminary patch as soon as the caffeine does its magic. Stephan
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