Getting well off-topic now, but do bear in mind that newer versions of MySQL use InnoDB as the default storage engine, whereas older versions use MyISAM. Make sure that your tables on the different servers are using the same storage engine as that could account for big differences in times of operations.

In reply to Re^5: Much slower DBI on RHEL6 by hippo
in thread Much slower DBI on RHEL6 by MPM

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