Hi,

I got performance problems with saslauth daemon. I`m using debian with cyrus 2.1.16 and saslauthd 2.1.19 for authentication.
The saslauthd is configured to use pam, which itself uses mysql for password-verification.


I test the system with 50 perl-script in the background from another machine, which makes continuous pop3-connections to my server.

So, the problem is, if I just take one user for the perl-authentification-test, cyrus or better the saslauthd can handle up to 7000 queries per minute.
But, if there isn`t only one user but rather 45.000 users, which will be connected through the perl-scripts. The performance goes down to ~1000 queries per minute.
I don`t think this causes of pam or mysql, because if saslauthd uses directly ldap (just al little test of me) saslauthd just handles the same (~1000) queries per minute.


Another test: if I use auxprop in cyrus with mysql, it goes at least down to 150 queries per minute.

I fixed some params of saslauthd like -c, -n (0), -t ... but it didn`t get fast!!!

So has anyone an idea?


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