Sergei Petrunia
3025c42605
Make ANALYZE FORMAT=JSON show execution time for filesort element.
2015-08-07 17:41:35 +03:00
Sergei Petrunia
ebe2bd74fe
MDEV-7836: ANALYZE FORMAT=JSON should provide info about GROUP BY
...
ANALYZE should also record remove_duplicates() operation.
2015-06-20 04:20:18 +03:00
Sergey Vojtovich
2bc6e29afe
MDEV-7943 - pthread_getspecific() takes 0.76% in OLTP RO
...
Pass THD to Sort_and_group_tracker::report_sorting().
This reduces number of pthread_getspecific() calls from 292 to 290.
2015-06-19 15:06:34 +04:00
Sergei Petrunia
caf4291d29
Remove garbage comment
2015-06-18 14:51:50 +03:00
Sergei Petrunia
93fc04ff1d
MDEV-6995: EXPLAIN JSON and ORDER BY, GROUP BY, etc
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- Make ANALYZE correctly remember and report filesort() calls
- Temp.table use is collected but only basic info is reported.
2015-06-06 00:32:27 +03:00
Sergei Petrunia
4938b82263
MDEV-7836: ANALYZE FORMAT=JSON should provide info about GROUP/ORDER BY
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Provide basic info about sorting/grouping done by the queries.
2015-04-12 04:48:42 +03:00
Sergei Petrunia
2af935c8ec
MDEV-7899: 10.1 is 3% slower than 10.0 in OLTP RO
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- Remove ANALYZE's timing code off the the execution path of regular
SELECTs.
- Improve the tracker that tracks counts/execution times of SELECTs or
DML statements:
= regular execution just increments counters
= ANALYZE will also collect timings.
2015-04-07 01:29:17 +03:00
Sergei Petrunia
77e16ce7d6
MDEV-7648: Extra data in ANALYZE FORMAT=JSON $stmt
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Switch from relying on PERFORMANCE_SCHEMA to using our
own hooks for counting the time spent reading rows from
tables.
2015-03-24 16:17:41 +03:00
