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During a Sysbench oltp_point_select workload with 1 table and 400 concurrent connections, a bottleneck on dict_table_t::lock_mutex was observed in ha_innobase::info_low(). dict_table_t::lock_latch: Replaces lock_mutex. In ha_innobase::info_low() and several other places, we will acquire a shared dict_table_t::lock_latch or we may elide the latch if hardware memory transactions are available. innobase_build_v_templ(): Remove the parameter "bool locked", and require the caller to hold exclusive dict_table_t::lock_latch (instead of holding an exclusive dict_sys.latch). Tested by: Vladislav Vaintroub Reviewed by: Vladislav Vaintroub |
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| archive | ||
| blackhole | ||
| columnstore | ||
| connect | ||
| csv | ||
| example | ||
| federated | ||
| federatedx | ||
| heap | ||
| innobase | ||
| maria | ||
| mroonga | ||
| myisam | ||
| myisammrg | ||
| oqgraph | ||
| perfschema | ||
| rocksdb | ||
| sequence | ||
| sphinx | ||
| spider | ||
| test_sql_discovery | ||