Perrin said it right.

If your app needs InnoDB (transaction, row level locks...) write it that
way.
Don't expect performance from a MyIsam compliant app when using InnoDB.

TomH

-----Original Message-----
From: Josh Miller [mailto:[EMAIL PROTECTED] 
Sent: Friday, September 05, 2008 12:42 AM
To: Tom Horstmann
Cc: mysql@lists.mysql.com
Subject: Re: innodb/myisam performance issues

Tom Horstmann wrote:
> Addendum..
> Please also try increasing your innodb_log_file_size to a much higher
value
> if you
> have lots of writes/transactions. Maybe 250MB is a good first try. 
> You need to delete/move the InnoDB logs before restart.
> 
> Not sure about this, but please also set innodb_log_buffer_size. Try
> something
> between 16-32MB if you have many transactions.

Ok, we've increased the innodb_log_file_size to 500M, and that has not 
changed the IO wait at all so far (after 1 hour).


Thanks!
Josh Miller, RHCE

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