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log_sys.latch: Remove the PERFORMANCE_SCHEMA instrumentation. We already know that this is a very busy latch. All code paths where a shared log_sys.latch is being held should already be highly optimized. The few paths where an exclusive log_sys.latch is being held are known to be potentially problematic, but rare. Removing the PERFORMANCE_SCHEMA instrumentation for this latch is expected to improve performance. On a quick Sysbench run with performance_schema_instrument=wait/synch/rwlock/%=on I observed an 2.9% improvement on throughput. srw_lock_debug_simple: A non-instrumented version of srw_lock_debug, to allow PERFORMANCE_SCHEMA to work WITH_INNODB_EXTRA_DEBUG=ON. Reviewed by: Alessandro Vetere |
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| .. | ||
| row0ext.cc | ||
| row0ftsort.cc | ||
| row0import.cc | ||
| row0ins.cc | ||
| row0log.cc | ||
| row0merge.cc | ||
| row0mysql.cc | ||
| row0purge.cc | ||
| row0quiesce.cc | ||
| row0row.cc | ||
| row0sel.cc | ||
| row0uins.cc | ||
| row0umod.cc | ||
| row0undo.cc | ||
| row0upd.cc | ||
| row0vers.cc | ||