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MDEV-6150 Speed up connection speed by moving creation of THD to new thread

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Creating a CONNECT object on client connect and pass this to the working thread which creates the THD.
Split LOCK_thread_count to different mutexes
Added LOCK_thread_start to syncronize threads
Moved most usage of LOCK_thread_count to dedicated functions
Use next_thread_id() instead of thread_id++

Other things:
- Thread id now starts from 1 instead of 2
- Added cast for thread_id as thread id is now of type my_thread_id
- Made THD->host const (To ensure it's not changed)
- Removed some DBUG_PRINT() about entering/exiting mutex as these was already logged by mutex code
- Fixed that aborted_connects and connection_errors_internal are counted in all cases
- Don't take locks for current_linfo when we set it (not needed as it was 0 before)
This commit is contained in:
Monty
2016-02-01 12:45:39 +02:00
parent 076aa182c2
commit 3d4a7390c1
50 changed files with 878 additions and 551 deletions
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22
mysql-test/r/mysqlbinlog_row_minimal.result
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@ -27,10 +27,10 @@ ROLLBACK/*!*/;
/*!100001 SET @@session.server_id=1*//*!*/;
/*!100001 SET @@session.gtid_seq_no=1*//*!*/;
# at 352
#<date> server id 1 end_log_pos 532 Query thread_id=4 exec_time=x error_code=0
#<date> server id 1 end_log_pos 532 Query thread_id=3 exec_time=x error_code=0
use `test`/*!*/;
SET TIMESTAMP=X/*!*/;
SET @@session.pseudo_thread_id=4/*!*/;
SET @@session.pseudo_thread_id=3/*!*/;
SET @@session.foreign_key_checks=1, @@session.sql_auto_is_null=0, @@session.unique_checks=1, @@session.autocommit=1/*!*/;
SET @@session.sql_mode=1342177280/*!*/;
SET @@session.auto_increment_increment=1, @@session.auto_increment_offset=1/*!*/;
@ -44,7 +44,7 @@ CREATE TABLE t1 (pk INT PRIMARY KEY, f1 INT, f2 INT, f3 TINYINT, f4 MEDIUMINT, f
#<date> server id 1 end_log_pos 570 GTID 0-1-2 ddl
/*!100001 SET @@session.gtid_seq_no=2*//*!*/;
# at 570
#<date> server id 1 end_log_pos 743 Query thread_id=4 exec_time=x error_code=0
#<date> server id 1 end_log_pos 743 Query thread_id=3 exec_time=x error_code=0
SET TIMESTAMP=X/*!*/;
CREATE TABLE t2 (pk INT PRIMARY KEY, f1 INT, f2 INT, f3 INT, f4 INT, f5 MEDIUMINT, f6 INT, f7 INT, f8 char(1))
/*!*/;
@ -69,7 +69,7 @@ BEGIN
### @8=7 /* INT meta=0 nullable=1 is_null=0 */
### @9='' /* STRING(1) meta=65025 nullable=1 is_null=0 */
# at 898
#<date> server id 1 end_log_pos 967 Query thread_id=4 exec_time=x error_code=0
#<date> server id 1 end_log_pos 967 Query thread_id=3 exec_time=x error_code=0
SET TIMESTAMP=X/*!*/;
COMMIT
/*!*/;
@ -94,7 +94,7 @@ BEGIN
### @8=7 /* INT meta=0 nullable=1 is_null=0 */
### @9=NULL /* STRING(1) meta=65025 nullable=1 is_null=1 */
# at 1121
#<date> server id 1 end_log_pos 1190 Query thread_id=4 exec_time=x error_code=0
#<date> server id 1 end_log_pos 1190 Query thread_id=3 exec_time=x error_code=0
SET TIMESTAMP=X/*!*/;
COMMIT
/*!*/;
@ -119,7 +119,7 @@ BEGIN
### @8=7 /* INT meta=0 nullable=1 is_null=0 */
### @9='A' /* STRING(1) meta=65025 nullable=1 is_null=0 */
# at 1343
#<date> server id 1 end_log_pos 1412 Query thread_id=4 exec_time=x error_code=0
#<date> server id 1 end_log_pos 1412 Query thread_id=3 exec_time=x error_code=0
SET TIMESTAMP=X/*!*/;
COMMIT
/*!*/;
@ -144,7 +144,7 @@ BEGIN
### @8=7 /* INT meta=0 nullable=1 is_null=0 */
### @9='A' /* STRING(1) meta=65025 nullable=1 is_null=0 */
# at 1568
#<date> server id 1 end_log_pos 1637 Query thread_id=4 exec_time=x error_code=0
#<date> server id 1 end_log_pos 1637 Query thread_id=3 exec_time=x error_code=0
SET TIMESTAMP=X/*!*/;
COMMIT
/*!*/;
@ -202,7 +202,7 @@ BEGIN
### @8=7 /* INT meta=0 nullable=1 is_null=0 */
### @9='A' /* STRING(1) meta=65025 nullable=1 is_null=0 */
# at 1890
#<date> server id 1 end_log_pos 1959 Query thread_id=4 exec_time=x error_code=0
#<date> server id 1 end_log_pos 1959 Query thread_id=3 exec_time=x error_code=0
SET TIMESTAMP=X/*!*/;
COMMIT
/*!*/;
@ -234,7 +234,7 @@ BEGIN
### SET
### @5=5 /* INT meta=0 nullable=1 is_null=0 */
# at 2119
#<date> server id 1 end_log_pos 2188 Query thread_id=4 exec_time=x error_code=0
#<date> server id 1 end_log_pos 2188 Query thread_id=3 exec_time=x error_code=0
SET TIMESTAMP=X/*!*/;
COMMIT
/*!*/;
@ -260,7 +260,7 @@ BEGIN
### WHERE
### @1=13 /* INT meta=0 nullable=0 is_null=0 */
# at 2328
#<date> server id 1 end_log_pos 2397 Query thread_id=4 exec_time=x error_code=0
#<date> server id 1 end_log_pos 2397 Query thread_id=3 exec_time=x error_code=0
SET TIMESTAMP=X/*!*/;
COMMIT
/*!*/;
@ -286,7 +286,7 @@ BEGIN
### WHERE
### @1=13 /* INT meta=0 nullable=0 is_null=0 */
# at 2537
#<date> server id 1 end_log_pos 2606 Query thread_id=4 exec_time=x error_code=0
#<date> server id 1 end_log_pos 2606 Query thread_id=3 exec_time=x error_code=0
SET TIMESTAMP=X/*!*/;
COMMIT
/*!*/;