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MySQL performance turning problem
Posted by: macgyver Pan
Date: January 08, 2005 06:25AM

Hi, all:

I need somebody help.

I install MySQL 4.1.7 in Solaris 9 and use JSP(using Apache+Resin 3) write a evaluation system program. Every user login to system and search near 250,000 data in 5 tables and write a few words to one of these tables.

BUT I found, if 1~5 users login "at same time" (its means users press Enter to login in the same time), it need 3~15 seconds to display data (every user display about 8 data). and if more 50 users login "at the same time", the system need 3~5 "minites" to display data. The users think the system was down...8-(

My hardware has 2 CPUS with 4 GB RAM, and I look the system utilization when more 50 users login , the CPU loading nears 100% and almost used by mysqld. If 1~3 users login, mysqld uses about 23% CPU loading.

I think it maybe some MySQL parameters need turning or some problem in my program when I using MySQL.

Can any one give me some suggestion? Thanks...

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