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6e096ee8d9
to a single statement.
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Bug#24795: SHOW PROFILE
Profiling is only partially functional on some architectures. Where
there is no getrusage() system call, presently Null values are
returned where it would be required. Notably, Windows needs some love
applied to make it as useful.
Syntax this adds:
SHOW PROFILES
SHOW PROFILE [types] [FOR QUERY n] [OFFSET n] [LIMIT n]
where "n" is an integer
and "types" is zero or many (comma-separated) of
"CPU"
"MEMORY" (not presently supported)
"BLOCK IO"
"CONTEXT SWITCHES"
"PAGE FAULTS"
"IPC"
"SWAPS"
"SOURCE"
"ALL"
It also adds a session variable (boolean) "profiling", set to "no"
by default, and (integer) profiling_history_size, set to 15 by
default.
This patch abstracts setting THDs' "proc_info" behind a macro that
can be used as a hook into the profiling code when profiling
support is compiled in. All future code in this line should use
that mechanism for setting thd->proc_info.
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Tests are now set to omit the statistics.
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Adds an Information_schema table, "profiling" for access to
"show profile" data.
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Merge zippy.cornsilk.net:/home/cmiller/work/mysql/mysql-5.0-community-3--bug24795
into zippy.cornsilk.net:/home/cmiller/work/mysql/mysql-5.0-community
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Fix merge problems.
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Fixed one bug in the query_source being NULL.
Updated test results.
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Include more thorough profiling tests.
Improve support for prepared statements.
Use session-specific query IDs, starting at zero.
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Selecting from I_S.profiling is no longer quashed in profiling, as
requested by Giuseppe.
Limit the size of captured query text.
No longer log queries that are zero length.
128 lines
3.6 KiB
Text
128 lines
3.6 KiB
Text
DROP TABLE IF EXISTS t1,t2,test1,test2;
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CREATE TABLE t1 (a int);
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INSERT INTO t1 VALUES (1),(2),(3);
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CREATE TABLE t2 (a int, b int);
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show tables;
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Tables_in_test
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t1
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t2
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select "--------------------" as "";
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--------------------
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Database: test
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+--------+
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| Tables |
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+--------+
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| t1 |
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| t2 |
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+--------+
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select "---- -v ------------" as "";
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---- -v ------------
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Database: test
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+--------+----------+
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| Tables | Columns |
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+--------+----------+
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| t1 | 1 |
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| t2 | 2 |
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+--------+----------+
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2 rows in set.
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select "---- -v -v ---------" as "";
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---- -v -v ---------
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Database: test
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+--------+----------+------------+
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| Tables | Columns | Total Rows |
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+--------+----------+------------+
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| t1 | 1 | 3 |
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| t2 | 2 | 0 |
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+--------+----------+------------+
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2 rows in set.
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select "----- -t -----------" as "";
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----- -t -----------
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Database: test
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+--------+------------+
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| Tables | table_type |
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+--------+------------+
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| t1 | BASE TABLE |
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| t2 | BASE TABLE |
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+--------+------------+
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select "---- -v -t ---------" as "";
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---- -v -t ---------
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Database: test
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+--------+------------+----------+
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| Tables | table_type | Columns |
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+--------+------------+----------+
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| t1 | BASE TABLE | 1 |
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| t2 | BASE TABLE | 2 |
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+--------+------------+----------+
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2 rows in set.
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select "---- -v -v -t ------" as "";
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---- -v -v -t ------
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Database: test
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+--------+------------+----------+------------+
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| Tables | table_type | Columns | Total Rows |
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+--------+------------+----------+------------+
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| t1 | BASE TABLE | 1 | 3 |
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| t2 | BASE TABLE | 2 | 0 |
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+--------+------------+----------+------------+
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2 rows in set.
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DROP TABLE t1, t2;
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Database: information_schema
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+---------------------------------------+
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| Tables |
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+---------------------------------------+
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| CHARACTER_SETS |
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| COLLATIONS |
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| COLLATION_CHARACTER_SET_APPLICABILITY |
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| COLUMNS |
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| COLUMN_PRIVILEGES |
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| KEY_COLUMN_USAGE |
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| PROFILING |
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| ROUTINES |
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| SCHEMATA |
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| SCHEMA_PRIVILEGES |
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| STATISTICS |
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| TABLES |
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| TABLE_CONSTRAINTS |
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| TABLE_PRIVILEGES |
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| TRIGGERS |
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| USER_PRIVILEGES |
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| VIEWS |
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+---------------------------------------+
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Database: INFORMATION_SCHEMA
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+---------------------------------------+
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| Tables |
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+---------------------------------------+
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| CHARACTER_SETS |
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| COLLATIONS |
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| COLLATION_CHARACTER_SET_APPLICABILITY |
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| COLUMNS |
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| COLUMN_PRIVILEGES |
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| KEY_COLUMN_USAGE |
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| PROFILING |
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| ROUTINES |
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| SCHEMATA |
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| SCHEMA_PRIVILEGES |
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| STATISTICS |
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| TABLES |
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| TABLE_CONSTRAINTS |
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| TABLE_PRIVILEGES |
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| TRIGGERS |
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| USER_PRIVILEGES |
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| VIEWS |
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+---------------------------------------+
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Wildcard: inf_rmation_schema
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+--------------------+
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| Databases |
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+--------------------+
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| information_schema |
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+--------------------+
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End of 5.0 tests
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