> Some free configuration advice: > > * You should increase your ``table_cache'' variable, ``Opens'' is much > higher than ``Open_tables'' indicating that MySQL is having to close > other tables in order to open some for new clients. > --------------------------------------------
I've thought about that and even tried a couple different configurations however I seemed to get a worse performance. However that was in early 3.23 stages....perhaps it is time to relook at some of the configuration variables....thanks for the tip =) > Anyhow, in the above config, the high count of Threads may lead to an > unstable machine particularly on Linux with large per thread caches > (there is an equation in the MySQL manual somewhere for this). I'll bet > he is using PHP and Apache and has persistent connection on PHP and > Keep-Alive on Apache. Actually the machine has been quite stable for me. And although I am using PHP mainly to do all the scripting I need with MySQL I am not using apache at all =) The server is basically a high end data miner for about 20k other servers constantly recording data. The only time I ever experience problems was using a 2.2.x kernel where the MySQL tables kept corrupting on me....when I switched to 2.4 that problem was resolved. Also when I tried using Slackware 8.0 I took a major performance hit....doing only about 30 QPS the server was having significant problems, when I moved back to 7.1 the problems poofed (quick little FYI for ye ol' slackware users) > A quick (partial) fix is to use MM inside PHP so persistent connections > act as expected (i.e. shared between processes). Even easier (sloppier) > fix is to not use Keep-Alive, use persistent connections, but have the > timeout inside mysql be a couple of seconds. That gets a better match > between active http processes and mysql threads with the least bit of > effort. Since typically the processes always retain their same connection this doesn't apply to me. But thank you very much for the tip. It will be definately something I look at when developing more interactive applications online =) Sincerely, Craig Vincent --------------------------------------------------------------------- Before posting, please check: http://www.mysql.com/manual.php (the manual) http://lists.mysql.com/ (the list archive) To request this thread, e-mail <[EMAIL PROTECTED]> To unsubscribe, e-mail <[EMAIL PROTECTED]> Trouble unsubscribing? Try: http://lists.mysql.com/php/unsubscribe.php
