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14
votes
1answer
21k views

What value of thread_cache_size should I use?

I'm using Asp.Net together with MySQL. In the .Net connection string, I have set Max Pool Size to 150. If I run the following I get these values: SHOW GLOBAL STATUS LIKE 'max_used_connections'; ...
4
votes
1answer
4k views

maximum number of connections Squid

I have a Squid proxy server that controls all internet traffic for my network. I need a way to stop users from downloading big files (say >50MB) in my network. I banned some famous ports (e.g. ...
1
vote
1answer
3k views

haproxy and persistant connections

I am using HAproxy to load balance between more web server. Those webservers are using PHP and sessions to keep one's session open. Now, I think that when a user refreshes the page, it is sent to one ...
7
votes
3answers
776 views

mysql “Too many connections” killed the network?

So I'm pretty confused here, figured I'd throw this out here and see if anyone else has any good ideas. We suffered a pretty big outage two nights ago, and I'm still searching for the root cause. I ...
1
vote
1answer
551 views

Mysql remote connections logging

I need to allow remote connections to my mysql server running on latest stable CentOS. I don't like this idea at all so I want at least to collect as much relevant information as possible. To be ...
1
vote
1answer
178 views

Please recommend an affordable cisco product capable of handling up to 100,000 plus simultaneous tcp connections [closed]

I am setting up my server lab, can you please recommend an affordable and very reliable router than can handle over 100,000 simultaneous open tcp connections without breaking a sweat? Thanks!
1
vote
1answer
1k views

Apache spawning hundreds of processes and pushing up load averages

I run a site with about 100,000 visits a day and lately the load averages sometimes hit the roof (250+). They are normally about 0.5-1.5, so I assumed a (d)dos attack. The number of apache processes ...