Re: 4096 file descriptors
On Wed, Aug 22, 2012 at 02:43:09PM -0400, Ron Vachiyer wrote: Quick question about filedescriptors. On Centos6, cyrus 2.3.16 seems to be able to open 4096 FDs ; master[27121]: retrying with 4096 (current max) ulimit -a says 1024; open files (-n) 1024 I am looking to increase this, and have found some documentation saying to increse file-max in /proc. However, file-max already has a much larger number; cat /proc/sys/fs/file-max 1201105 The only way I have found so far is to add a ulimit -n 8192 in /etc/rc.d/init.d/cyrus-imapd Is there a more generic/cleaner way to do this? Thanks, Ron Hi Ron, I do not know if this is applicable to Centos6, but Redhat 6 shipped with this file: /etc/security/limits.d/90-nproc.conf # Default limit for number of user's processes to prevent # accidental fork bombs. # See rhbz #432903 for reasoning. * softnproc 65535 except the limit was 1024. Argh! We bumped it here and we were good. Note, do NOT remove the file or a patch/update will re-create it with the expected negative consequences for a busy system. Regards, Ken Cyrus Home Page: http://www.cyrusimap.org/ List Archives/Info: http://lists.andrew.cmu.edu/pipermail/info-cyrus/ To Unsubscribe: https://lists.andrew.cmu.edu/mailman/listinfo/info-cyrus
4096 file descriptors
Quick question about filedescriptors. On Centos6, cyrus 2.3.16 seems to be able to open 4096 FDs ; master[27121]: retrying with 4096 (current max) ulimit -a says 1024; open files (-n) 1024 I am looking to increase this, and have found some documentation saying to increse file-max in /proc. However, file-max already has a much larger number; cat /proc/sys/fs/file-max 1201105 The only way I have found so far is to add a ulimit -n 8192 in /etc/rc.d/init.d/cyrus-imapd Is there a more generic/cleaner way to do this? Thanks, Ron Cyrus Home Page: http://www.cyrusimap.org/ List Archives/Info: http://lists.andrew.cmu.edu/pipermail/info-cyrus/ To Unsubscribe: https://lists.andrew.cmu.edu/mailman/listinfo/info-cyrus
Re: 4096 file descriptors
On Wed, 22 Aug 2012, Ron Vachiyer wrote: Quick question about filedescriptors. On Centos6, cyrus 2.3.16 seems to be able to open 4096 FDs ; master[27121]: retrying with 4096 (current max) ulimit -a says 1024; open files (-n) 1024 I am looking to increase this, and have found some documentation saying to increse file-max in /proc. However, file-max already has a much larger number; cat /proc/sys/fs/file-max 1201105 The only way I have found so far is to add a ulimit -n 8192 in /etc/rc.d/init.d/cyrus-imapd Is there a more generic/cleaner way to do this? I've always done it in the cyrus init script: # Crank up the limits ulimit -n 209702 ulimit -u 4096 ulimit -c 102400 You may be able to set it in limits.conf (pam_limits), but I'm not sure if that applies when starting cyrus from the init script?? Andy Cyrus Home Page: http://www.cyrusimap.org/ List Archives/Info: http://lists.andrew.cmu.edu/pipermail/info-cyrus/ To Unsubscribe: https://lists.andrew.cmu.edu/mailman/listinfo/info-cyrus
Re: 4096 file descriptors
On Wed, 2012-08-22 at 14:43 -0400, Ron Vachiyer wrote: Quick question about filedescriptors. On Centos6, cyrus 2.3.16 seems to be able to open 4096 FDs ; master[27121]: retrying with 4096 (current max) ulimit -a says 1024; open files (-n) 1024 I am looking to increase this, and have found some documentation saying to increse file-max in /proc. However, file-max already has a much larger number; cat /proc/sys/fs/file-max 1201105 Yep The only way I have found so far is to add a ulimit -n 8192 in /etc/rc.d/init.d/cyrus-imapd man pam_limits Is there a more generic/cleaner way to do this? Yep, you can setup a limits.conf file that adjusts limits per user, per group, etc... signature.asc Description: This is a digitally signed message part Cyrus Home Page: http://www.cyrusimap.org/ List Archives/Info: http://lists.andrew.cmu.edu/pipermail/info-cyrus/ To Unsubscribe: https://lists.andrew.cmu.edu/mailman/listinfo/info-cyrus
Re: 4096 file descriptors
On Wed, Aug 22, 2012, at 09:47 PM, Andrew Morgan wrote: On Wed, 22 Aug 2012, Ron Vachiyer wrote: Quick question about filedescriptors. On Centos6, cyrus 2.3.16 seems to be able to open 4096 FDs ; master[27121]: retrying with 4096 (current max) ulimit -a says 1024; open files (-n) 1024 I am looking to increase this, and have found some documentation saying to increse file-max in /proc. However, file-max already has a much larger number; cat /proc/sys/fs/file-max 1201105 The only way I have found so far is to add a ulimit -n 8192 in /etc/rc.d/init.d/cyrus-imapd Is there a more generic/cleaner way to do this? I've always done it in the cyrus init script: Us too. We run 400+ instances, so init script is magic perl, and it does ulimit before launching master. Bron. -- Bron Gondwana br...@fastmail.fm Cyrus Home Page: http://www.cyrusimap.org/ List Archives/Info: http://lists.andrew.cmu.edu/pipermail/info-cyrus/ To Unsubscribe: https://lists.andrew.cmu.edu/mailman/listinfo/info-cyrus
