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MDEV-11153 - Introduce status variables for table cache monitoring and tuning

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Status variables added: Table_open_cache_hits, Table_open_cache_misses,
Table_open_cache_overflows, Table_open_cache_active_instances.
This commit is contained in:
Sergey Vojtovich
2017-08-10 15:45:03 +04:00
parent 5d3ed9acdd
commit 613dd62a76
7 changed files with 99 additions and 9 deletions
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3
sql/sql_class.h
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@ -823,6 +823,9 @@ typedef struct system_status_var
ulonglong rows_sent;
ulonglong rows_tmp_read;
ulonglong binlog_bytes_written;
ulonglong table_open_cache_hits;
ulonglong table_open_cache_misses;
ulonglong table_open_cache_overflows;
double last_query_cost;
double cpu_time, busy_time;
/* Don't initialize */