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66 lines
1.6 KiB
Text
66 lines
1.6 KiB
Text
drop table if exists t1;
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create table t1 (a int not null);
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insert into t1 values (1), (2), (3);
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SET GLOBAL query_cache_size=1355776;
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flush query cache;
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reset query cache;
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select * from t1;
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a
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1
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2
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3
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show status like "Qcache_queries_in_cache";
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Variable_name Value
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Qcache_queries_in_cache 1
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show status like "Qcache_inserts";
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Variable_name Value
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Qcache_inserts 1
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show status like "Qcache_hits";
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Variable_name Value
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Qcache_hits 0
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select * from t1;
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a
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1
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2
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3
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show status like "Qcache_queries_in_cache";
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Variable_name Value
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Qcache_queries_in_cache 1
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show status like "Qcache_inserts";
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Variable_name Value
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Qcache_inserts 1
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show status like "Qcache_hits";
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Variable_name Value
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Qcache_hits 1
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select spins from performance_schema.EVENTS_WAITS_CURRENT order by event_name limit 1;
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spins
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NULL
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select name from performance_schema.SETUP_INSTRUMENTS order by name limit 1;
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name
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wait/io/file/csv/data
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show status like "Qcache_queries_in_cache";
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Variable_name Value
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Qcache_queries_in_cache 1
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show status like "Qcache_inserts";
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Variable_name Value
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Qcache_inserts 1
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show status like "Qcache_hits";
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Variable_name Value
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Qcache_hits 1
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select spins from performance_schema.EVENTS_WAITS_CURRENT order by event_name limit 1;
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spins
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NULL
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select name from performance_schema.SETUP_INSTRUMENTS order by name limit 1;
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name
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wait/io/file/csv/data
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show status like "Qcache_queries_in_cache";
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Variable_name Value
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Qcache_queries_in_cache 1
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show status like "Qcache_inserts";
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Variable_name Value
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Qcache_inserts 1
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show status like "Qcache_hits";
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Variable_name Value
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Qcache_hits 1
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SET GLOBAL query_cache_size= default;
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drop table t1;
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