[support] how to shrink sessions table

We have one site that is on the busy side and the sessions table is getting, shall we say, on the largish side (303k records). I'm looking at reducing that. I'm assuming this would be done in settings.php.

ini_set('session.cache_expire', 200000); ini_set('session.cache_limiter', 'none'); ini_set('session.cookie_lifetime', 2000000); ini_set('session.gc_maxlifetime', 200000);

My question: Which of these settings should we cut down to reduce the number of records? (We don't want to log people out upon closing the browser, so that approach is out.)

Would I cut down the cookie_lifetime?

Any help would be much appreciated. Thanks!

Laura, the MySQL klutz