Hello.
According to: http://dev.mysql.com/doc/mysql/en/show-processlist.html
the temporary result set was larger than tmp_table_size and the thread
But we get max. 10.000 long values in out result set.
is changing the temporary table from in-memory to disk-based format to save memory. I suggest you to play with the value of this variable which is now:
tmp_table_size 33554432
I try to change this value.
Also I think that upgrade to 4.1.11 might solve the problem. The page
I was thinking already about this.
http://dev.mysql.com/doc/mysql/en/order-by-optimization.html
says that MySQL 4.1 and up uses a new faster algorithm for optimization and 'ORDER BY' queries. And maybe some advices from there could be helpful for you. However, I don't see how it is related to replication, except that master makes a lot of requests to read binary logs to send the updates to the slave.
Regards,
Rafal
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