There’s an issue with Openfire (formerly known as Wildfire –the open source Jabber-based IM server) and large amounts of users. The Openfire server stops accepting new connections when approximately 1000+ concurrent users are logged in. This issue seems to be caused by a maximum open file limit per process being hit. I figured out the following solution after a half day or so of researching and testing. This applies to Fedora Core 7 Linux,but should work with any Linux-based OS capable of running Openfire.
To permanently increase the maximum open file limits:
vi /etc/security/limits.conf
Append the following lines to the end of the file:
* hard nofile 64000root hard nofile 64000daemon hard nofile 64000
A reboot is required for these changes to take effect. I’m not sure of the issues this may cause with the OS,but so far I haven’t run into any.
Use at your own risk!
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Tags:openfire,wildfire, linux, fedora, fedora core 7, open file limit, root, jabber, im, limits.conf
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