qmail uses 100% cpu after FreeBSD-5.0 to 5.1 upgrade

[Thorsten Schroeder]

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?

greetings,

  thorsten