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775cba4d0f
- FLUSH GLOBAL STATUS now resets most global_status_vars.
At this stage, this is mainly to be used for testing.
- FLUSH SESSION STATUS added as an alias for FLUSH STATUS.
- FLUSH STATUS does not require any privilege (before required RELOAD).
- FLUSH GLOBAL STATUS requires RELOAD privilege.
- All global status reset moved to FLUSH GLOBAL STATUS.
- Replication semisync status variables are now reset by
FLUSH GLOBAL STATUS.
- In test cases, the only changes are:
- Replace FLUSH STATUS with FLUSH GLOBAL STATUS
- Replace FLUSH STATUS with FLUSH STATUS; FLUSH GLOBAL STATUS.
This was only done in a few tests where the test was using SHOW STATUS
for both local and global variables.
- Uptime_since_flush_status is now always provided, independent if
ENABLED_PROFILING is enabled when compiling MariaDB.
- @@global.Uptime_since_flush_status is reset on FLUSH GLOBAL STATUS
and @@session.Uptime_since_flush_status is reset on FLUSH SESSION STATUS.
- When connected, @@session.Uptime_since_flush_status is set to 0.
61 lines
1.9 KiB
Text
61 lines
1.9 KiB
Text
# Tests for PERFORMANCE_SCHEMA
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--source include/not_embedded.inc
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--source include/have_perfschema.inc
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# Setup
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update performance_schema.setup_instruments set enabled='NO';
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update performance_schema.setup_instruments set enabled='YES'
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where name like "wait/io/file/myisam/%";
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update performance_schema.setup_consumers
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set enabled='YES';
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truncate table performance_schema.events_waits_history_long;
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# Reset lost counters to a known state
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truncate table performance_schema.events_statements_summary_by_digest;
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flush global status;
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# Code to test
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--disable_warnings
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drop table if exists test.no_index_tab;
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--enable_warnings
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create table test.no_index_tab ( a varchar(255), b int ) engine=myisam;
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insert into no_index_tab set a = 'foo', b = 1;
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insert into no_index_tab set a = 'foo', b = 1;
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insert into no_index_tab set a = 'foo', b = 1;
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# Verification
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# Note that mi_create.c contains mysql_file_tell() calls in debug only,
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# so the result are filtered to remove 'tell'.
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# Note that even after setting other instruments to enabled='NO'
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# and truncating the events_waits_history_long table,
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# some events -- that were already started but not completed --
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# for other instruments could still be added in the history.
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# To protect against that, an extra where clause
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# "and event_name like "wait/io/file/myisam/%"
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# is added to the select to filter out the result.
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select event_name,
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left(source, locate(":", source)) as short_source,
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operation, number_of_bytes,
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substring(object_name, locate("no_index_tab", object_name)) as short_name
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from performance_schema.events_waits_history_long
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where operation not like "tell"
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and event_name like "wait/io/file/myisam/%"
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having short_name <> ""
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order by thread_id, event_id;
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# In case of failures, this will tell if file io are lost.
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show global status like 'performance_schema_%';
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# Cleanup
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update performance_schema.setup_instruments set enabled='YES';
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drop table test.no_index_tab;
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