Or tuneup things... Can you get the squid cache manager info dump? This might help us to understand what is the load on the server and how many client's it's handling. In any case it would be good to update to 3.5.26 but let's leave this aside and see what can be done right now and not in the long term. Eliezer ---- Eliezer Croitoru Linux System Administrator Mobile: +972-5-28704261 Email: eliezer@xxxxxxxxxxxx -----Original Message----- From: squid-users [mailto:squid-users-bounces@xxxxxxxxxxxxxxxxxxxxx] On Behalf Of erdosain9 Sent: Tuesday, July 4, 2017 15:50 To: squid-users@xxxxxxxxxxxxxxxxxxxxx Subject: Re: open failed to shm_open(/squid-ssl_session_cache.shm) Hi. Im using CentOS Linux release 7.2.1511 (Core) "Your Squid has received more concurrent negotiateauthenticator requests than it is configured to handle. FWIW, Squid v4+ can be configured to drop extra requests"... are you telling me it's time to update??? :-( -- View this message in context: http://squid-web-proxy-cache.1019090.n4.nabble.com/open-failed-to-shm-open-squid-ssl-session-cache-shm-tp4682961p4682967.html Sent from the Squid - Users mailing list archive at Nabble.com. _______________________________________________ squid-users mailing list squid-users@xxxxxxxxxxxxxxxxxxxxx http://lists.squid-cache.org/listinfo/squid-users _______________________________________________ squid-users mailing list squid-users@xxxxxxxxxxxxxxxxxxxxx http://lists.squid-cache.org/listinfo/squid-users