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MySQL Perfomace with two DB must be so slow?
Posted by: diSmiSS Ilyin
Date: March 24, 2005 09:19AM

Sorry if i posted in wrong place (it seems to me this post must be in MySQL Usage - Newbie) but.... the folowing situation...
Computer: P4-3.0G/1Gb/150SATA
OS: FreeBSD 5.3/PHP 4.3.10/MySQL 4.0.23a
The perfomance of server is too slow.....
When i taped "top" command i see something like that:
CPU states: 67.8% ..........
and never be less then 50%. The most rated process is:
--------------------------------------------------------------------------------
PID USERNAME PRI NICE SIZE RES STATE TIME WCPU CPU COMMAND
19231 mysql 20 0 317M 294M kserel 496:35 14.75% 14.75% mysqld
.......
.......
--------------------------------------------------------------------------------
I have two DB (first about 5Mb, second (forum) - (180Mb)), and about 200-300 visitors whithin 15 minutes.

There is one thing that i couldn't explain.
When i typed in MySQL shell promt SHOW BINLOG EVENTS
-----------------------------------------------------------------------------
Log name Position Event type Server ID Original position Information
log-bin.001 79 Query 1 79 use `forum`; DELETE FROM `forum`....
log-bin.001 144 Query 1 144 use `forum`; INSERT INTO session ....
log-bin.001 618 Query 1 618 use `site`; UPDATE user SET....
log-bin.001 724 Query 1 724 use `forum`; UPDATE thread ......
log-bin.001 819 Query 1 819 use `forum`; INSERT INTO s.......
log-bin.001 957 Query 1 957 use `site`; update pm_weblog ......
.........
-----------------------------------------------------------------------------

That's all.....
And now question's:
Is MySQL realy need more process time with 200-300 visitors?
Why in each line of logfile is USE command?

PS Sorry for my bad English :(.

thank's for help....

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