diff options
Diffstat (limited to 'mysql-test/suite/perfschema/t/query_cache.test')
| -rw-r--r-- | mysql-test/suite/perfschema/t/query_cache.test | 55 |
1 files changed, 55 insertions, 0 deletions
diff --git a/mysql-test/suite/perfschema/t/query_cache.test b/mysql-test/suite/perfschema/t/query_cache.test new file mode 100644 index 00000000000..60d4a648222 --- /dev/null +++ b/mysql-test/suite/perfschema/t/query_cache.test @@ -0,0 +1,55 @@ +# Tests for PERFORMANCE_SCHEMA + +# This test verifies that performance schema tables, because they contain +# data that is volatile, are never cached in the query cache. + +--source include/have_query_cache.inc +--source include/not_embedded.inc +--source include/have_perfschema.inc + +--disable_warnings +drop table if exists t1; +--enable_warnings + +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; + +show status like "Qcache_queries_in_cache"; +show status like "Qcache_inserts"; +show status like "Qcache_hits"; + +select * from t1; + +show status like "Qcache_queries_in_cache"; +show status like "Qcache_inserts"; +show status like "Qcache_hits"; + +select spins from performance_schema.events_waits_current order by event_name limit 1; + +select * from performance_schema.setup_timers where name='wait'; + +show status like "Qcache_queries_in_cache"; +show status like "Qcache_inserts"; +show status like "Qcache_hits"; + +select spins from performance_schema.events_waits_current order by event_name limit 1; + +select * from performance_schema.setup_timers where name='wait'; + +show status like "Qcache_queries_in_cache"; +show status like "Qcache_inserts"; +show status like "Qcache_hits"; + +SET GLOBAL query_cache_size= default; + +drop table t1; +flush status; + |