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Displaying posts with tag: Slave performance improvement (reset)

Improving MySQL Slave Performance with Batch Operations
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The problem
Sometime back a member of the MySQL support team informed us that the slaves are very sluggish, when he tried to run a delete query on the master. "What may be the problem?" we wondered. This is in RBR and its pretty usual that we have slower slaves when using RBR as compared to SBR. We requested for some more details and found that it is something else. It's a problem when a lot of rows are getting modified in a table without PRIMARY KEY.

"UPDATE t1 set a = a+1;" and other queries such as this are generally found to make slaves sluggish if the table does not have proper index. Is it a …

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