After a long bout of unrelated issues I have had a chance to revisit my cyrus issues. I managed to reduce startup times by increasing the frequency of checkpoints in cyrus.conf. I have installed pam_mysql 0.5 and recompiled sasl with a few options random being one and removed unwanted mechs and libs. Saslauthd still leaks but not as much as it did. Process grows to about 50mb over a day as opposed to 500m in an hour! I can live with that.
However, no tweaks to cyrus, auth mechs or mysql have helped login speeds. It turned out in the end to be the Redhat firewall config. I set it to "high" on installation and had simply been adding ports to the ACCEPT chain. The server is already protected by another firewall so i just turned it off. Now connections are blinding! =]
Anyways.. thanks for all your help.
Matt
Rob Siemborski wrote:
On Sat, 7 Feb 2004, Matthew Baker wrote:
Problem 1. Saslauthd gradually grows in memory size until the login process grinds to a halt. I have set it to restart once an hour to clear it. I have tried setting the option -n0 to force a child for each auth request but that seem to create numerous connections to the database which would exceed the max connections variable. I now am thinking that to use auxprop mysql plugin might be a better route. I currently have 183 mysqld processes running, this can't be right.
If you are using PAM with saslauthd, you need to be very sure that whatever PAM module you are using doesn't have any memory leaks, otherwise you'll become very sad very quickly.
It takes between 7 and 15 seconds to login into any mailbox even if it's empty. Regardless of client or OS. Also it takes about 5 minutes after a restart before the deliver.db is ready and logins start. My old PII 400 I was using before was faster!
What part is taking the time? Long login times are often caused by insufficient entropy in the system.
-Rob
-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=- Rob Siemborski * Andrew Systems Group * Cyert Hall 207 * 412-268-7456 Research Systems Programmer * /usr/contributed Gatekeeper
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