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I have:

CPU: 2 x Intel(R) Xeon(R) CPU E5-2650 v2 @ 2.60GHz (2600.06-MHz K8-class CPU)

128 GB RAM


session files stored in RAM

each session file is 1...10 kb

gc_maxlifetime = 1440

quantity of session files is: 21000 (100M RAM)

when I change gc_maxlifetime to = 3600 quantity of session files changes to: 55000 (250M RAM)

After it site start opening were slowly.

Site start working slowly only after changing gc_maxlifetime to = 3600. When gc_maxlifetime = 1440 all works perfectly.

So, it happens because of huge amount of session files.

Would should I do to make it work faster?

share|improve this question
It all depends on your application and the way it uses sessions. – Tero Kilkanen Mar 31 '14 at 9:15
How are you storing sessions? – Michael Hampton Mar 31 '14 at 11:33
I storing sessions like: $_SESSION['chat_login']['login'] == 1 – TKVideoChat Mar 31 '14 at 13:20

Use smaller sessions. Don't store them in RAM. Buy more RAM. Or as you've already discovered, use a lower gc_maxlifetime.

However 100M is only a tiny fraction of the memory - which rather suggests something else is very badly configured and using up all the memory - have you got MySQL with a massive buffer pool?

share|improve this answer
I dont have a problem with RAM. I Have 67GB free RAM. I have problem with site speed when session files more then 30 000 – TKVideoChat Mar 31 '14 at 13:15
It might have been helpful if you had mentioned that. If you've got enough free memory then you've got a problem with indexing/space allocation for the sessins. But you didn't say what method you use for that. – symcbean Mar 31 '14 at 13:18
I storing sessions like: $_SESSION['chat_login']['login'] == 1 – TKVideoChat Mar 31 '14 at 13:22
Q: have you got MySQL with a massive buffer pool? A: innodb buffer pool size 47.684 GiB – TKVideoChat Mar 31 '14 at 13:25
No, that's not how you are storing the sessions. Please read the manual. – symcbean Mar 31 '14 at 14:00

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