SHOW STATUS can help you figure out what needs to be adjusted, like Key_reads vs. Key_read_requests ratio.
On Apr 28, 2005, at 5:35 PM, jatwood wrote:
I am new to MySQL. Please excuse my ignorance if this question has been
previously discussed. I was not able to
find an answer to my question by searching the archives.
I have MySQL installed on a dedicated AMD-64 computer with the MS XP Pro
operating system.
MS-SQLServer is installed on a 32-bit machine with a slower clock speed. I
am running the free binary
distribution of MySQL for testing purposes and have been generally impressed
with
MySQL's comparative performance in all but one area.
I am finding that both inner and outer merges take substantially longer with
MySQL than with the SQLServer using the same basic code.
In one application a left outer merge between a file with 600,000 records
and a file with 4,500,000 records took about 10-15 minutes with
SQLServer and 11 hours with MySQL. I am repeatedly having similar experiences with both inner and outer merges.
Is there any way I can try to improve MySQL's performance with respect to
merges? Needless to say, unless I can improve MySQL's
performance, I will not be converting to MySQL at this time.
Thanks
-- Brent Baisley Systems Architect Landover Associates, Inc. Search & Advisory Services for Advanced Technology Environments p: 212.759.6400/800.759.0577
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