MySQL and most other databases require adjustment of server settings, and especially of
table structures and indexes to achieve the best performance possible.
If you haven't examined index usage for the queries you're running, or adjusted server
memory settings from defaults, then it's no surprise you would get poor performance.
I don't have the inclination to dig through your code; however, if you extract the actual
queries you are running, then run EXPLAIN <query>; that will show how it's using
indexes. You can put that information here, along with the SHOW CREATE TABLE
<table> \G output for all tables involved, and someone here should be able to help
diagnose why the queries might be slow.
From: Patrick Thompson [mailto:Patrick.Thompson@stripped]
Sent: Monday, October 25, 2010 6:38 AM
Subject: mySql versus Sql Server performance
I am running an open source project that provides an abstraction layer over a number of
different stores. I am puzzled by performance numbers I am seeing between mysql and sql
server - a brief discussion is available here
The statistics were generated using mySql 5.1 and Sql Server 2008 on a machine with the
OS Name Microsoft Windows 7 Professional
System Model HP Compaq nc8430 (RB554UT#ABA)
Processor Intel(R) Core(TM)2 CPU T7200 @ 2.00GHz, 2000 Mhz, 2 Core(s),
2 Logical Processor(s)
Installed Physical Memory (RAM) 4.00 GB
Total Virtual Memory 6.75 GB
Page File Space 3.37 GB
Disk 120GB SSD with 22GB available
If this isn't the right place to ask this question, can someone point me to somewhere that
Are you using...
myList<http://www.mylist.com/> - everything you could possibly want (to buy)
Let me know if you can't find something
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