We're seeing a lot of spamdyke processes on our servers getting stuck in
some sort of state where they'll hang, and use 100% CPU until we kill -9
them. Anyone else seeing this with 4.2.0?
>From what it looks like, it occurs once spamdyke has done its job and Qmail
has accepted the message. There'll always be open network descriptors stuck
in CLOSE_WAIT:
spamdyke 32096 root txt REG 8,6 275224
1731152 /usr/bin/spamdyke
spamdyke 32096 root mem REG 8,6 93504
1730437 /usr/lib/libz.so.1.2.3.3
spamdyke 32096 root mem REG 8,6 14616
54944903 /lib/libdl-2.7.so
spamdyke 32096 root mem REG 8,6 1667176
1733359 /usr/lib/libcrypto.so.0.9.8
spamdyke 32096 root mem REG 8,6 1375536
54944893 /lib/libc-2.7.so
spamdyke 32096 root mem REG 8,6 335936
1733360 /usr/lib/libssl.so.0.9.8
spamdyke 32096 root mem REG 8,6 119288
54944779 /lib/ld-2.7.so
spamdyke 32096 root 0u IPv4 477462833
TCP [US]:smtp->[THEM]:62593 (CLOSE_WAIT)
spamdyke 32096 root 1u IPv4 477462833
TCP [US]:smtp->[THEM]:62593 (CLOSE_WAIT)
spamdyke 32096 root 2u IPv4 477462833
TCP [US]:smtp->[THEM]:62593 (CLOSE_WAIT)
spamdyke 32096 root 3u IPv4 477462971
UDP *:56058
spamdyke 32096 root 4u unix 0xffff88005cac9500
477464597 socket
spamdyke 32096 root 5w FIFO 0,8
477463023 pipe
spamdyke 32096 root 6r FIFO 0,8
477463024 pipe
An strace on the process shows that absolutely nothing is happening:
$ strace -p 32096
Process 32096 attached - interrupt to quit
^CProcess 32096 detached
Version:
$ spamdyke -v
spamdyke 4.2.0+TLS+CONFIGTEST+DEBUG (C)2011 Sam Clippinger, samc (at)
silence (dot) org
http://www.spamdyke.org/
We're receiving around 80,000 connections to spamdyke a day, and out of that
end up with about 8 hung processes.
I've just enabled the full-log-dir option in spamdyke to try and get some
internal logs, but I can't leave it enabled for long due to the amount of
mail we receive.
Regards,
Chris Boulton
Lead Engineer
BigCommerce
Web: http://www.bigcommerce.com
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