Date: Sun, 15 Jun 2003 23:40:32 -0700 (PDT) From: Don Lewis <truckman@FreeBSD.org> To: ths@katjusha.de Cc: current@FreeBSD.org Subject: Re: qmail uses 100% cpu after FreeBSD-5.0 to 5.1 upgrade Message-ID: <200306160640.h5G6eWM7048102@gw.catspoiler.org> In-Reply-To: <Pine.BSF.4.55.0306160817250.48094@typhaon.so36.net>
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On 16 Jun, Thorsten Schroeder wrote: > Hi, > > On Mon, 15 Jun 2003, Chris Shenton wrote: > >> [...] qmail is run under daemontools and all work fine (the configuration >> is 2 years old!), but when I delivery the first mail (localy or remote) >> the qmail-send process fire up to 100% of CPU infinitely >> >> All other mail are right delivery, and the CPU use is the only problem, I >> see in qmail-send.c that select() function, after the first message, >> allways return 1 > > same here too. > I don't know what it could be - perhaps a problem with named pipes > ("lock/trigger")? > > You can find my ktrace output here: http://cs.so36.net/~ths/kdump.txt > > Would be nice if anyone have an idea :) > >> A truss shows me it's running in a tight loop over this code: >> close(9) = 0 (0x0) >> select(0x9,0xbfbffcbc,0xbfbffc3c,0x0,0xbfbffc24) = 1 (0x1) > >> Anyone else seen this or know what in FreeBSD-5.1 might have changed to cause >> this? Any thoughts on how I might go about diagnosing this any better? Which version of fifo_vnops.c? If the problem is present in 5.1-RELEASE, then the problem is likely to be the change made in 1.79 and 1.85. If the problem didn't show up until after the 5.1-RELEASE, then the problem could be the changes in 1.87 or 1.88.
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