Wietse Venema <[EMAIL PROTECTED]> wrote: > > # strace -p 31741 > > Process 31741 attached - interrupt to quit > > futex(0x2a96b46930, FUTEX_WAIT, 2, NULL ^C<unfinished ...> > > Postfix does not manipulate futexes. The word futex appears > nowhere in Postfix source code. > > However, there's a mutex deadlock in the LINUX C library when a > Postfix < 2.4 watchdog timer goes off and syslog()s a warning > message; the watchdog timer goes off when a Postfix < 2.4 qmgr > defers massive amounts of mail because of a dead transport or > nexthop.
Thanks! I have noticed occasional qmgr crashes with the "watchdog timer" error occurring, usually when it's in the middle of deferring thousands of messages for one domain all at once. I meant to investigate those. However, based on the logs, that's not what it was doing at the time this particular freeze happened. I'll watch for future occurrences to collect more data, and try to get an upgrade soon. -- Cos
