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Re: cluster network load
Posted by: Stewart Smith
Date: June 18, 2006 09:55PM

If you have such a tight timeframe and want things to work well - you should perhaps consider a support arrangement with some initial consulting.

4 data nodes means more messages needed to do some of the same things, so things can be "slower" on a start-to-end of transaction measurement.

Your idea on the split of read/write will be wrong. You may be seeing traffic from mysql client processes to mysqld and mysqld fufilling the queries from the query cache.

otherwise, due to your high bandwidth to the api nodes, it sounds like you're doing a lot of table scans or not using pushdown conditions.

Stewart Smith, Software Engineer - MySQL Cluster
MySQL AB, www.mysql.com

Jumpstart your cluster:
http://www.mysql.com/consulting/packaged/cluster.html

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