occasional delays in lmtpd

Alan Thew Alan.Thew at liverpool.ac.uk
Thu Jul 6 15:53:48 EDT 2006

On Thu, 6 Jul 2006 17:36 , Kjetil Torgrim Homme <kjetilho at ifi.uio.no> said:

>we're running Cyrus 2.2.12 on RHEL3U7.  about once a day (typically peak
>hours), we have a problem with lmtpd just "hanging":
>Jul  6 13:36:27 mail-imap3 lmtpunix[1578]: executed
>Jul  6 13:55:08 mail-imap3 lmtpunix[1578]: accepted connection
>Jul  6 13:55:08 mail-imap3 lmtpunix[1578]: lmtp connection preauth'd as postman
>note the 18 minute delay.  during this time, there are no deliveries to
>this Cyrus.
>at this time, there's about 70% idle CPU and 6 GiB free RAM, so it
>shouldn't be resource constrained.  IMAP service seems snappy as ever.
>this is the entry from cyrus.conf:
>  lmtpunix   cmd="lmtpd" listen="/uio/PKG/config/var/imap/socket/lmtp" prefork=2
>we are running several instances of Cyrus on each cluster node, and this
>happens simultaneously to all instances on a given node.
>looking at the code, it seems the wait happens inside
>service/master.c:main, and probably is related to the lock file.  is it
>possible there is a race condition?
Are you using db or skiplist?

Alan Thew                                       alan.thew at liverpool.ac.uk
Computing Services,University of Liverpool      Fax: +44 151 794-4442

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