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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