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From:Matthias Schonder Date:September 18 2003 9:24am
Subject:Performance Problems
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Hei :) 

I have an extreme performance problem with a MySQL-DB. 
The database consists of 21 tables where all except three are storing only a
few records. Two have about 150.000 records but they are only used
temporary. The main table is rather huge, it has 90 columns and now after
three month it has 500.000 records... but in the end it has to store data of
36 month. 
But since the table has grown to over 350.000 records I ran into massive
performance problems. Querying for one record (Example: SELECT sendnr FROM
pool where sendnr = 111073101180) takes 8 seconds via command line! 
The table is indexed and i put the my-huge.cnf into /etc/ as my.cnf 

How can I get more performance out of the mysql? 
The server which currently only hosts this database and is running apache1.3
with php4 for providing results via intranet. 
The OS is FreeBSD 5.1. 
We are running two servers with the same enviroment 
One is a DualXeon 2.4ghz (with HT), 3GB RAM, 105GB HD (RAID5) 
the other one is a P4 with 2.4ghz, 1GB RAM and 120GB HD 

The Dual is the Productionserver, the P4 the developement- and test server. 
The querey takes that long on BOTH machines so it seems clear the DB itself
is causing the performance problem. 

So anyone can help? This is really urgend and will save my life :) 

Big thanks in advance. 


Matthias Schonder
Performance ProblemsMatthias Schonder18 Sep
  • RE: Performance ProblemsAndy Eastham18 Sep
  • Re: Performance ProblemsHarald Tijink18 Sep
  • Re: Performance ProblemsScott Helms18 Sep