| Server IP : 45.40.142.9 / Your IP : 216.73.216.250 Web Server : Apache System : Linux s45-40-142-9.secureserver.net 2.6.32-754.35.1.el6.x86_64 #1 SMP Sat Nov 7 12:42:14 UTC 2020 x86_64 User : bayspec ( 506) PHP Version : 5.6.40 Disable Function : NONE MySQL : ON | cURL : ON | WGET : ON | Perl : ON | Python : ON | Sudo : ON | Pkexec : ON Directory : /usr/share/mysql-test/suite/perfschema/r/ |
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drop table if exists t1;
create table t1 (a int not null);
insert into t1 values (1), (2), (3);
SET GLOBAL query_cache_size=1355776;
flush query cache;
reset query cache;
flush status;
select * from t1;
a
1
2
3
show status like "Qcache_queries_in_cache";
Variable_name Value
Qcache_queries_in_cache 1
show status like "Qcache_inserts";
Variable_name Value
Qcache_inserts 1
show status like "Qcache_hits";
Variable_name Value
Qcache_hits 0
select * from t1;
a
1
2
3
show status like "Qcache_queries_in_cache";
Variable_name Value
Qcache_queries_in_cache 1
show status like "Qcache_inserts";
Variable_name Value
Qcache_inserts 1
show status like "Qcache_hits";
Variable_name Value
Qcache_hits 1
select spins from performance_schema.events_waits_current order by event_name limit 1;
spins
NULL
select * from performance_schema.setup_timers where name='wait';
NAME TIMER_NAME
wait {CYCLE_OR_NANOSECOND}
show status like "Qcache_queries_in_cache";
Variable_name Value
Qcache_queries_in_cache 1
show status like "Qcache_inserts";
Variable_name Value
Qcache_inserts 1
show status like "Qcache_hits";
Variable_name Value
Qcache_hits 1
select spins from performance_schema.events_waits_current order by event_name limit 1;
spins
NULL
select * from performance_schema.setup_timers where name='wait';
NAME TIMER_NAME
wait {CYCLE_OR_NANOSECOND}
show status like "Qcache_queries_in_cache";
Variable_name Value
Qcache_queries_in_cache 1
show status like "Qcache_inserts";
Variable_name Value
Qcache_inserts 1
show status like "Qcache_hits";
Variable_name Value
Qcache_hits 1
SET GLOBAL query_cache_size= default;
drop table t1;
flush status;