mirror of
https://github.com/MariaDB/server.git
synced 2025-11-22 17:44:29 +03:00
6e096ee8d9
to a single statement.
---
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.
---
Tests are now set to omit the statistics.
---
Adds an Information_schema table, "profiling" for access to
"show profile" data.
---
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
---
Fix merge problems.
---
Fixed one bug in the query_source being NULL.
Updated test results.
---
Include more thorough profiling tests.
Improve support for prepared statements.
Use session-specific query IDs, starting at zero.
---
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.
366 lines
14 KiB
Plaintext
366 lines
14 KiB
Plaintext
show session variables like 'profil%';
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Variable_name Value
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profiling OFF
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profiling_history_size 15
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select @@profiling;
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@@profiling
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0
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set global profiling = ON;
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ERROR HY000: Variable 'profiling' is a SESSION variable and can't be used with SET GLOBAL
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set global profiling_history_size=100;
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show global variables like 'profil%';
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Variable_name Value
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profiling OFF
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profiling_history_size 100
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set session profiling = ON;
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set session profiling_history_size=30;
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show session variables like 'profil%';
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Variable_name Value
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profiling ON
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profiling_history_size 30
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select @@profiling;
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@@profiling
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1
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create table t1 (
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a int,
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b int
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);
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insert into t1 values (1,1), (2,null), (3, 4);
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insert into t1 values (5,1), (6,null), (7, 4);
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insert into t1 values (1,1), (2,null), (3, 4);
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insert into t1 values (5,1), (6,null), (7, 4);
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select max(x) from (select sum(a) as x from t1 group by b) as teeone;
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max(x)
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20
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insert into t1 select * from t1;
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select count(*) from t1;
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count(*)
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24
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insert into t1 select * from t1;
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insert into t1 select * from t1;
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insert into t1 select * from t1;
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select count(*) from t1;
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count(*)
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192
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insert into t1 select * from t1;
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insert into t1 select * from t1;
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insert into t1 select * from t1;
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select count(*) from t1;
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count(*)
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1536
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select sum(a) from t1;
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sum(a)
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6144
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select sum(a) from t1 group by b;
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sum(a)
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2048
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1536
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2560
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select sum(a) + sum(b) from t1 group by b;
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sum(a) + sum(b)
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NULL
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2048
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4608
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select max(x) from (select sum(a) as x from t1 group by b) as teeone;
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max(x)
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2560
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select '012345678900123456789001234567890012345678900123456789001234567890012345678900123456789001234567890012345678900123456789001234567890012345678900123456789001234567890012345678900123456789001234567890012345678900123456789001234567890012345678900123456789001234567890012345678900123456789001234567890012345678900123456789001234567890012345678900123456789001234567890012345678900123456789001234567890012345678900123456789001234567890012345678900123456789001234567890012345678900123456789001234567890012345678900123456789001234567890012345678900123456789001234567890012345678900123456789001234567890012345678900123456789001234567890012345678900123456789001234567890' as big_string;
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big_string
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012345678900123456789001234567890012345678900123456789001234567890012345678900123456789001234567890012345678900123456789001234567890012345678900123456789001234567890012345678900123456789001234567890012345678900123456789001234567890012345678900123456789001234567890012345678900123456789001234567890012345678900123456789001234567890012345678900123456789001234567890012345678900123456789001234567890012345678900123456789001234567890012345678900123456789001234567890012345678900123456789001234567890012345678900123456789001234567890012345678900123456789001234567890012345678900123456789001234567890012345678900123456789001234567890012345678900123456789001234567890
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show profiles;
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Query_ID Duration Query
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0 # set session profiling = ON
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1 # set session profiling_history_size=30
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2 # show session variables like 'profil%'
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3 # select @@profiling
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4 # create table t1 (
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a int,
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b int
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)
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5 # insert into t1 values (1,1), (2,null), (3, 4)
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6 # insert into t1 values (5,1), (6,null), (7, 4)
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7 # insert into t1 values (1,1), (2,null), (3, 4)
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8 # insert into t1 values (5,1), (6,null), (7, 4)
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9 # select max(x) from (select sum(a) as x from t1 group by b) as teeone
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10 # insert into t1 select * from t1
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11 # select count(*) from t1
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12 # insert into t1 select * from t1
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13 # insert into t1 select * from t1
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14 # insert into t1 select * from t1
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15 # select count(*) from t1
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16 # insert into t1 select * from t1
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17 # insert into t1 select * from t1
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18 # insert into t1 select * from t1
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19 # select count(*) from t1
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20 # select sum(a) from t1
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21 # select sum(a) from t1 group by b
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22 # select sum(a) + sum(b) from t1 group by b
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23 # select max(x) from (select sum(a) as x from t1 group by b) as teeone
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24 # select '0123456789001234567890012345678900123456789001234567890012345678900123456789001234567890012345678900123456789001234567890012345678900123456789001234567890012345678900123456789001234567890012345678900123456789001234567890012345678900123456789001234567890012345678900123456789001234567890012345
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show profile for query 15;
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show profile cpu for query 15;
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show profile cpu, block io for query 15;
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show profile cpu for query 9 limit 2 offset 2;
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show profile cpu for query 10 limit 0;
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show profile cpu for query 65534;
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show profile memory;
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show profile block io;
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show profile context switches;
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show profile page faults;
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show profile ipc;
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show profile swaps limit 1 offset 2;
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show profile source;
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show profile all for query 0 limit 0;
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show profile all for query 15;
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select * from information_schema.profiling;
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select query_id, state, duration from information_schema.profiling;
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select query_id, sum(duration) from information_schema.profiling group by query_id;
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select query_id, count(*) from information_schema.profiling group by query_id;
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select sum(duration) from information_schema.profiling;
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select query_id, count(*), sum(duration) from information_schema.profiling group by query_id;
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select CPU_user, CPU_system, Context_voluntary, Context_involuntary, Block_ops_in, Block_ops_out, Messages_sent, Messages_received, Page_faults_major, Page_faults_minor, Swaps, Source_function, Source_file, Source_line from information_schema.profiling;
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drop table if exists t1, t2, t3;
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Warnings:
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Note 1051 Unknown table 't2'
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Note 1051 Unknown table 't3'
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create table t1 (id int );
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create table t2 (id int not null);
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create table t3 (id int not null primary key);
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insert into t1 values (1), (2), (3);
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insert into t2 values (1), (2), (3);
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insert into t3 values (1), (2), (3);
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show profiles;
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Query_ID Duration Query
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10 # insert into t1 select * from t1
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11 # select count(*) from t1
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12 # insert into t1 select * from t1
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13 # insert into t1 select * from t1
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14 # insert into t1 select * from t1
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15 # select count(*) from t1
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16 # insert into t1 select * from t1
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17 # insert into t1 select * from t1
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18 # insert into t1 select * from t1
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19 # select count(*) from t1
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20 # select sum(a) from t1
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21 # select sum(a) from t1 group by b
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22 # select sum(a) + sum(b) from t1 group by b
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23 # select max(x) from (select sum(a) as x from t1 group by b) as teeone
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24 # select '0123456789001234567890012345678900123456789001234567890012345678900123456789001234567890012345678900123456789001234567890012345678900123456789001234567890012345678900123456789001234567890012345678900123456789001234567890012345678900123456789001234567890012345678900123456789001234567890012345
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25 # select * from information_schema.profiling
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26 # select query_id, state, duration from information_schema.profiling
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27 # select query_id, sum(duration) from information_schema.profiling group by query_id
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28 # select query_id, count(*) from information_schema.profiling group by query_id
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29 # select sum(duration) from information_schema.profiling
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30 # select query_id, count(*), sum(duration) from information_schema.profiling group by query_id
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31 # select CPU_user, CPU_system, Context_voluntary, Context_involuntary, Block_ops_in, Block_ops_out, Messages_sent, Messages_received, Page_faults_major, Page_faults_minor, Swaps, Source_function, Source_file, Source_line from information_schema.profiling
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32 # drop table if exists t1, t2, t3
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33 # SHOW WARNINGS
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34 # create table t1 (id int )
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35 # create table t2 (id int not null)
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36 # create table t3 (id int not null primary key)
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37 # insert into t1 values (1), (2), (3)
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38 # insert into t2 values (1), (2), (3)
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39 # insert into t3 values (1), (2), (3)
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select * from t1;
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id
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1
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2
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3
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show profiles;
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Query_ID Duration Query
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11 # select count(*) from t1
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12 # insert into t1 select * from t1
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13 # insert into t1 select * from t1
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14 # insert into t1 select * from t1
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15 # select count(*) from t1
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16 # insert into t1 select * from t1
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17 # insert into t1 select * from t1
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18 # insert into t1 select * from t1
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19 # select count(*) from t1
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20 # select sum(a) from t1
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21 # select sum(a) from t1 group by b
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22 # select sum(a) + sum(b) from t1 group by b
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23 # select max(x) from (select sum(a) as x from t1 group by b) as teeone
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24 # select '0123456789001234567890012345678900123456789001234567890012345678900123456789001234567890012345678900123456789001234567890012345678900123456789001234567890012345678900123456789001234567890012345678900123456789001234567890012345678900123456789001234567890012345678900123456789001234567890012345
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25 # select * from information_schema.profiling
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26 # select query_id, state, duration from information_schema.profiling
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27 # select query_id, sum(duration) from information_schema.profiling group by query_id
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28 # select query_id, count(*) from information_schema.profiling group by query_id
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29 # select sum(duration) from information_schema.profiling
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30 # select query_id, count(*), sum(duration) from information_schema.profiling group by query_id
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31 # select CPU_user, CPU_system, Context_voluntary, Context_involuntary, Block_ops_in, Block_ops_out, Messages_sent, Messages_received, Page_faults_major, Page_faults_minor, Swaps, Source_function, Source_file, Source_line from information_schema.profiling
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32 # drop table if exists t1, t2, t3
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33 # SHOW WARNINGS
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34 # create table t1 (id int )
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35 # create table t2 (id int not null)
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36 # create table t3 (id int not null primary key)
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37 # insert into t1 values (1), (2), (3)
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38 # insert into t2 values (1), (2), (3)
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39 # insert into t3 values (1), (2), (3)
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40 # select * from t1
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This ^^ should end in "select * from t1;\"
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delete from t1;
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insert into t1 values (1), (2), (3);
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insert into t1 values (1), (2), (3);
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select * from t1;
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id
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1
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2
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3
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1
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2
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3
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show profiles;
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Query_ID Duration Query
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15 # select count(*) from t1
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16 # insert into t1 select * from t1
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17 # insert into t1 select * from t1
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18 # insert into t1 select * from t1
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19 # select count(*) from t1
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20 # select sum(a) from t1
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21 # select sum(a) from t1 group by b
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22 # select sum(a) + sum(b) from t1 group by b
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23 # select max(x) from (select sum(a) as x from t1 group by b) as teeone
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24 # select '0123456789001234567890012345678900123456789001234567890012345678900123456789001234567890012345678900123456789001234567890012345678900123456789001234567890012345678900123456789001234567890012345678900123456789001234567890012345678900123456789001234567890012345678900123456789001234567890012345
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25 # select * from information_schema.profiling
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26 # select query_id, state, duration from information_schema.profiling
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27 # select query_id, sum(duration) from information_schema.profiling group by query_id
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28 # select query_id, count(*) from information_schema.profiling group by query_id
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29 # select sum(duration) from information_schema.profiling
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30 # select query_id, count(*), sum(duration) from information_schema.profiling group by query_id
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31 # select CPU_user, CPU_system, Context_voluntary, Context_involuntary, Block_ops_in, Block_ops_out, Messages_sent, Messages_received, Page_faults_major, Page_faults_minor, Swaps, Source_function, Source_file, Source_line from information_schema.profiling
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32 # drop table if exists t1, t2, t3
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33 # SHOW WARNINGS
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34 # create table t1 (id int )
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35 # create table t2 (id int not null)
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36 # create table t3 (id int not null primary key)
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37 # insert into t1 values (1), (2), (3)
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38 # insert into t2 values (1), (2), (3)
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39 # insert into t3 values (1), (2), (3)
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40 # select * from t1
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41 # delete from t1
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42 # insert into t1 values (1), (2), (3)
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43 # insert into t1 values (1), (2), (3)
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44 # select * from t1
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set session profiling = OFF;
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select sum(id) from t1;
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sum(id)
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12
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show profiles;
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Query_ID Duration Query
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16 # insert into t1 select * from t1
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17 # insert into t1 select * from t1
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18 # insert into t1 select * from t1
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19 # select count(*) from t1
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20 # select sum(a) from t1
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21 # select sum(a) from t1 group by b
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22 # select sum(a) + sum(b) from t1 group by b
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23 # select max(x) from (select sum(a) as x from t1 group by b) as teeone
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24 # select '0123456789001234567890012345678900123456789001234567890012345678900123456789001234567890012345678900123456789001234567890012345678900123456789001234567890012345678900123456789001234567890012345678900123456789001234567890012345678900123456789001234567890012345678900123456789001234567890012345
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25 # select * from information_schema.profiling
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26 # select query_id, state, duration from information_schema.profiling
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27 # select query_id, sum(duration) from information_schema.profiling group by query_id
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28 # select query_id, count(*) from information_schema.profiling group by query_id
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29 # select sum(duration) from information_schema.profiling
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30 # select query_id, count(*), sum(duration) from information_schema.profiling group by query_id
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31 # select CPU_user, CPU_system, Context_voluntary, Context_involuntary, Block_ops_in, Block_ops_out, Messages_sent, Messages_received, Page_faults_major, Page_faults_minor, Swaps, Source_function, Source_file, Source_line from information_schema.profiling
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32 # drop table if exists t1, t2, t3
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33 # SHOW WARNINGS
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34 # create table t1 (id int )
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35 # create table t2 (id int not null)
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36 # create table t3 (id int not null primary key)
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37 # insert into t1 values (1), (2), (3)
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38 # insert into t2 values (1), (2), (3)
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39 # insert into t3 values (1), (2), (3)
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40 # select * from t1
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41 # delete from t1
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42 # insert into t1 values (1), (2), (3)
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43 # insert into t1 values (1), (2), (3)
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44 # select * from t1
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45 # set session profiling = OFF
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set session profiling = ON;
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select @@profiling;
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@@profiling
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1
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create function f1() returns varchar(50) return 'hello';
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select @@profiling;
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@@profiling
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1
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select * from t1 where id <> f1();
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id
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1
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2
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3
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1
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2
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3
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select @@profiling;
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@@profiling
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1
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set session profiling = ON;
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drop table if exists t2;
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create table t2 (id int not null);
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create trigger t2_bi before insert on t2 for each row set @x=0;
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select @@profiling;
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@@profiling
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1
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insert into t2 values (1), (2), (3);
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select @@profiling;
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@@profiling
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1
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set session profiling = ON;
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drop table if exists t1, t2;
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create table t1 (id int not null primary key);
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create table t2 (id int not null primary key, id1 int not null);
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select @@profiling;
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@@profiling
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1
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alter table t2 add foreign key (id1) references t1 (id) on delete cascade;
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select @@profiling;
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@@profiling
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1
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lock table t1 write;
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select @@profiling;
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@@profiling
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1
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unlock table;
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select @@profiling;
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@@profiling
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1
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set autocommit=0;
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select @@profiling, @@autocommit;
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@@profiling @@autocommit
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1 0
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begin;
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select @@profiling;
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@@profiling
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1
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insert into t1 values (1);
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insert into t2 values (1,1);
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testing referential integrity cascade
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delete from t1 where id = 1;
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select @@profiling;
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@@profiling
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1
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testing rollback
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rollback;
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select @@profiling;
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@@profiling
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1
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testing commit
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begin;
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select @@profiling;
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@@profiling
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1
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commit;
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select @@profiling;
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@@profiling
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1
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drop table if exists t1, t2, t3;
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drop view if exists v1;
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Warnings:
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Note 1051 Unknown table 'test.v1'
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drop function if exists f1;
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set session profiling = OFF;
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End of 5.0 tests
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