Hi, Can anyone share experiences with running out of open files on Linux? I am using a 2.4.26 kernel, and the system wide open file limit is rather large. Do I need to set anything other than this? The default limit of 1024 is in effect for both cyrus and root.
Thanks. AJ
# cat /proc/sys/fs/file-nr 25301 1092 65532
The three numbers represent allocated filehandles, free fh, and max fh. If cyrus needs more filehandles than max fh, the kernel will refuse to give it any more, and you will get a "too many open files" error. The above numbers are from a system with 375 concurrent imapd processes. If allocated fh starts getting close to max fh, you need to increase the max.
The RedHat default max is pretty low (8192), at least it was when I was running Cyrus on RedHat boxes (RH 7.2, 7.3). Maybe they've changed the default since then. On Debian Woody systems, you have a little more room by default (32768). This will all become moot with the 2.6 kernel, but I'm not ready to run 2.6 on my production mail server yet. :-)
Add something like this to a boot script: echo 65536 > /proc/sys/fs/file-max
-Jules
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-- Jules Agee System Administrator Pacific Coast Feather Co. [EMAIL PROTECTED] x284 --- Cyrus Home Page: http://asg.web.cmu.edu/cyrus Cyrus Wiki/FAQ: http://cyruswiki.andrew.cmu.edu List Archives/Info: http://asg.web.cmu.edu/cyrus/mailing-list.html
