Sam,
Issuing a kill on the ppid got rid of the zombies.
I am running Spamdyke 3.1.6. I do not know what the cause of the
problem is, but is is very low frequency...1-2 per week.
Bruce
Sam Clippinger wrote:
Can you determine what process started these zombies? If it is spamdyke,
you should see some spamdyke processes that have been running at least
as long as the defunct qmail-smtpd processes. You can see the PIDs of
the parent processes with a command like this:
ps axo user,pid,ppid,%cpu,%mem,vsz,rss,tty,stat,start_time,time,cmd
That mimics the output of "ps aux" but adds the PPID field.
What version of spamdyke are you using? It had some problems with
leaving zombie processes in the past but those have all been resolved
(to my knowledge). I'd love to know where the spamdyke processes are
stuck. strace might lend some clues. If spamdyke was compiled with
debugging symbols, a stack trace from gdb would be best.
-- Sam Clippinger
Bruce Schreiber wrote:
I now have 10 qmail-smtpd zombie processes running. This has all
occurred since Spamdyke was implemented. ps aux |grep Z shows:
USER PID %CPU %MEM VSZ RSS TTY STAT START TIME COMMAND
qmaild 25253 0.0 0.0 0 0 ? Z Apr20 0:00
[qmail-smtpd <defunct>]
qmaild 25255 0.0 0.0 0 0 ? Z Apr20 0:00
[qmail-smtpd <defunct>]
qmaild 25273 0.0 0.0 0 0 ? Z Apr20 0:00
[qmail-smtpd <defunct>]
qmaild 13013 0.0 0.0 0 0 ? Z Apr29 0:00
[qmail-smtpd <defunct>]
qmaild 28360 0.0 0.0 0 0 ? Z May08 0:00
[qmail-smtpd <defunct>]
qmaild 21187 0.0 0.0 0 0 ? Z May28 0:00
[qmail-smtpd <defunct>]
qmaild 2342 0.0 0.0 0 0 ? Z May28 0:00
[qmail-smtpd <defunct>]
qmaild 11080 0.0 0.0 0 0 ? Z Jun06 0:00
[qmail-smtpd <defunct>]
qmaild 12012 0.0 0.0 0 0 ? Z Jun06 0:00
[qmail-smtpd <defunct>]
qmaild 30223 0.0 0.0 0 0 ? Z Jun14 0:00
[qmail-smtpd <defunct>]
As can be seen, they are infrequent, but they are annoying. Two questions:
1) short of rebooting, how do you get rid of a zombie (you can't kill
them, hence the name).
2) Any inkling as to what may be causing these zombies?
Bruce
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