Re: Looking for Database Profiling Tool
The metrics you suggest are interesting, but can't tell you much about what to fix or how.
My favorite tool for investigating performance issues (and to a lesser degree, monitoring them) is the slowlog.
1. set long_query_time = 1 (or some value smaller than the too-high default of 10)
2. turn on slowlog (and leave it on)
3. periodically (daily? weekly?) run pt-query-digest against the slowlog
4. ponder whether anything can be done to improve the top couple of queries, such as
* Different/additional index
* reformulation of the query
* redesign the application to avoid the use of the query
* etc.
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Re: Looking for Database Profiling Tool
July 12, 2015 08:15AM
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