karpatz Posted May 13, 2009 Share Posted May 13, 2009 Hello I really need your help and hope you can help me I have a VPS and a IPB forum... in last days (one month) my database has some problems but I can't find them. In critical hours and when there are many users, it becomes overloaded very often. But before, even with many members it was ok. I don't know if there is any mod that causes the overload. I have checked, repared and optimized tables but the issue continues. Here it is the server admin mail: I have checked your vps and found that the mysql service on your vps is causing high load and this in turn is seriously affecting performance of main server in which your vps is hosted. The load on your vps was very high due to mysql processes taking great amount of cpu time. I have restarted mysql service on your vps and the load on both your vps and our main server was reduced for some time. But now mysql has again started taking load and affecting main server as well. Here is the result obtained from your vps. ================================================= root@server [/]# uptime 14:24:56 up 72 days, 14:11, 0 users, load average: 23.58, 22.66, 33.39 root@server [/]# top -c top - 14:25:29 up 72 days, 14:11, 0 users, load average: 15.22, 20.67, 32.33 Tasks: 167 total, 10 running, 156 sleeping, 0 stopped, 1 zombie Cpu(s): 73.9%us, 13.3%sy, 0.0%ni, 12.8%id, 0.0%wa, 0.0%hi, 0.0%si, 0.0%st Mem: 2097152k total, 792224k used, 1304928k free, 0k buffers Swap: 0k total, 0k used, 0k free, 0k cached PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND 10060 mysql 15 0 97504 48m 3692 S 132 2.4 2:28.99 /usr/sbin/mysqld -- 3770 nobody 15 0 21560 10m 2764 S 10 0.5 0:03.41 /usr/local/apache/b 3373 nobody 16 0 28896 17m 2784 R 9 0.9 0:05.68 /usr/local/apache/b 10139 nobody 15 0 22700 11m 2760 S 9 0.6 0:00.62 /usr/local/apache/b 5683 nobody 16 0 22108 11m 2768 S 7 0.5 0:03.30 /usr/local/apache/b 11686 nobody 15 0 21560 10m 2760 S 7 0.5 0:01.07 /usr/local/apache/b ================================================= Link to comment https://forums.phpfreaks.com/topic/157939-database-overload/ Share on other sites More sharing options...
JonnoTheDev Posted May 13, 2009 Share Posted May 13, 2009 You may need to optimise your mysql configuration for the number of users (my.cnf). More memory in your server will also help. Are your tables properly optimised i.e. indexes setup correctly. Also setup a slow query log so you can see the offending queries. http://dev.mysql.com/doc/refman/5.0/en/slow-query-log.html Link to comment https://forums.phpfreaks.com/topic/157939-database-overload/#findComment-833130 Share on other sites More sharing options...
karpatz Posted May 13, 2009 Author Share Posted May 13, 2009 Ok, I'm a noob in mysql conf. Can you explain how can I do all those things please? Cause my server is really slow... I don't even understand how can I start mysqld with the --log-slow-queries[=file_name] option. Is it by the WHM? ??? Link to comment https://forums.phpfreaks.com/topic/157939-database-overload/#findComment-833460 Share on other sites More sharing options...
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