MDEV-32537 due to Linux, restrict thread name to 15 characters, also in PS.

Rename some threads to workaround this restrictions, e.g "rpl_parallel_thread"->"rpl_parallel", "slave_background" -> "slave_bg" etc.

Author: vaintroub

mysql-test/suite/perfschema/r/dml_replication_applier_status_by_worker.result

@@ -31,7 +31,7 @@ from information_schema.columns
 where table_schema='performance_schema' and table_name='replication_applier_status_by_worker';
 column_name	column_comment
 CHANNEL_NAME	Name of replication channel through which the transaction is received.
-THREAD_ID	Thread_Id as displayed in the performance_schema.threads table for thread with name 'thread/sql/rpl_parallel_thread'. THREAD_ID will be NULL when worker threads are stopped due to error/force stop.
+THREAD_ID	Thread_Id as displayed in the performance_schema.threads table for thread with name 'thread/sql/rpl_parallel'. THREAD_ID will be NULL when worker threads are stopped due to error/force stop.
 SERVICE_STATE	Whether or not the thread is running.
 LAST_SEEN_TRANSACTION	Last GTID executed by worker
 LAST_ERROR_NUMBER	Last Error that occurred on a particular worker.

mysql-test/suite/perfschema/r/table_schema.result

@@ -868,7 +868,7 @@ def	performance_schema	replication_applier_status_by_coordinator	LAST_ERROR_TIME
 def	performance_schema	replication_applier_status_by_coordinator	LAST_SEEN_TRANSACTION	7	NULL	NO	char	57	171	NULL	NULL	NULL	utf8mb3	utf8mb3_general_ci	char(57)	select,insert,update,references	The transaction the worker has last seen.	NEVER	NULL	NO	NO
 def	performance_schema	replication_applier_status_by_coordinator	LAST_TRANS_RETRY_COUNT	8	NULL	NO	int	NULL	NULL	10	0	NULL	NULL	NULL	int(11)	select,insert,update,references	Total number of retries attempted by last transaction.	NEVER	NULL	NO	NO
 def	performance_schema	replication_applier_status_by_worker	CHANNEL_NAME	1	NULL	NO	varchar	256	768	NULL	NULL	NULL	utf8mb3	utf8mb3_general_ci	varchar(256)	select,insert,update,references	Name of replication channel through which the transaction is received.	NEVER	NULL	NO	NO
-def	performance_schema	replication_applier_status_by_worker	THREAD_ID	2	NULL	YES	bigint	NULL	NULL	20	0	NULL	NULL	NULL	bigint(20) unsigned	select,insert,update,references	Thread_Id as displayed in the performance_schema.threads table for thread with name 'thread/sql/rpl_parallel_thread'. THREAD_ID will be NULL when worker threads are stopped due to error/force stop.	NEVER	NULL	NO	NO
+def	performance_schema	replication_applier_status_by_worker	THREAD_ID	2	NULL	YES	bigint	NULL	NULL	20	0	NULL	NULL	NULL	bigint(20) unsigned	select,insert,update,references	Thread_Id as displayed in the performance_schema.threads table for thread with name 'thread/sql/rpl_parallel'. THREAD_ID will be NULL when worker threads are stopped due to error/force stop.	NEVER	NULL	NO	NO
 def	performance_schema	replication_applier_status_by_worker	SERVICE_STATE	3	NULL	NO	enum	3	9	NULL	NULL	NULL	utf8mb3	utf8mb3_general_ci	enum('ON','OFF')	select,insert,update,references	Whether or not the thread is running.	NEVER	NULL	NO	NO
 def	performance_schema	replication_applier_status_by_worker	LAST_SEEN_TRANSACTION	4	NULL	NO	char	57	171	NULL	NULL	NULL	utf8mb3	utf8mb3_general_ci	char(57)	select,insert,update,references	Last GTID executed by worker	NEVER	NULL	NO	NO
 def	performance_schema	replication_applier_status_by_worker	LAST_ERROR_NUMBER	5	NULL	NO	int	NULL	NULL	10	0	NULL	NULL	NULL	int(11)	select,insert,update,references	Last Error that occurred on a particular worker.	NEVER	NULL	NO	NO

mysql-test/suite/perfschema/r/threads_innodb.result

@@ -5,5 +5,5 @@ FROM performance_schema.threads
 WHERE name LIKE 'thread/innodb/%'
 GROUP BY name;
 name	type	processlist_user	processlist_host	processlist_db	processlist_command	processlist_time	processlist_state	processlist_info	parent_thread_id	role	instrumented
-thread/innodb/page_cleaner_threadBACKGROUND	NULL	NULL	NULL	NULL	NULL	NULL	NULL	NULL	NULL	YES
-thread/innodb/thread_pool_threadBACKGROUND	NULL	NULL	NULL	NULL	NULL	NULL	NULL	NULL	NULL	YES
+thread/innodb/ib_tpool_workerBACKGROUND	NULL	NULL	NULL	NULL	NULL	NULL	NULL	NULL	NULL	YES
+thread/innodb/page_cleanerBACKGROUND	NULL	NULL	NULL	NULL	NULL	NULL	NULL	NULL	NULL	YES

mysql-test/suite/rpl/t/rpl_perfschema_applier_status_by_worker.test

@@ -68,7 +68,7 @@ source include/assert.inc;
 # the thread.
 let $thread_name= `select name from performance_schema.threads where thread_id= (select Thread_Id from performance_schema.replication_applier_status_by_worker)`;
 let $assert_text= thread_name should should indicate worker thread.;
-let $assert_cond= "$thread_name" = "thread/sql/rpl_parallel_thread";
+let $assert_cond= "$thread_name" = "thread/sql/rpl_parallel";
 source include/assert.inc;
 
 let $ps_value= query_get_value(select Service_State from performance_schema.replication_applier_status_by_worker, Service_State, 1);

mysql-test/suite/sysschema/r/pr_ps_setup_show_enabled.result

@@ -14,7 +14,8 @@ UPDATE performance_schema.threads
 SET INSTRUMENTED = 'NO'
  WHERE NAME LIKE 'thread/innodb/srv\_%'
  OR NAME LIKE '%con\_%'
- OR NAME LIKE '%signal_handler%';
+ OR NAME LIKE '%signal_handler%'
+ OR NAME LIKE '%worker%';
 CALL sys.ps_setup_show_enabled(FALSE, FALSE);
 performance_schema_enabled
 1
@@ -203,8 +204,8 @@ global_instrumentation
 statements_digest
 thread_instrumentation
 enabled_threads	thread_type
-aria/checkpoint_backgroundBACKGROUND
-innodb/page_cleaner_threadBACKGROUND
+aria/checkpoint_bgBACKGROUND
+innodb/page_cleanerBACKGROUND
 mysys/statement_timer	BACKGROUND
 root@localhost	FOREGROUND
 sql/main	BACKGROUND
@@ -234,8 +235,8 @@ global_instrumentation
 statements_digest
 thread_instrumentation
 enabled_threads	thread_type
-aria/checkpoint_backgroundBACKGROUND
-innodb/page_cleaner_threadBACKGROUND
+aria/checkpoint_bgBACKGROUND
+innodb/page_cleanerBACKGROUND
 mysys/statement_timer	BACKGROUND
 root@localhost	FOREGROUND
 sql/main	BACKGROUND

mysql-test/suite/sysschema/t/pr_ps_setup_show_enabled.test

@@ -26,7 +26,8 @@ UPDATE performance_schema.threads
  SET INSTRUMENTED = 'NO'
  WHERE NAME LIKE 'thread/innodb/srv\_%'
  OR NAME LIKE '%con\_%'
- OR NAME LIKE '%signal_handler%';
+ OR NAME LIKE '%signal_handler%'
+ OR NAME LIKE '%worker%';
 
 # Show limited info (no thread or instrument info)
 CALL sys.ps_setup_show_enabled(FALSE, FALSE);

mysys/my_thread_name.cc

@@ -53,10 +53,17 @@ static void dbug_verify_thread_name(const char *name)
  }
  if (psi_name && strcmp(psi_name, name))
  {
- fprintf(stderr, "my_thread_set_name() mismatch: PSI name '%s' != '%s'\n",
+ fprintf(stderr, "ERROR: my_thread_set_name() mismatch: PSI name '%s' != '%s'\n",
  psi_name, name);
  abort();
  }
+ size_t len= strlen(name);
+ if (len > 15)
+ {
+ /* Linux can' handle "long" (> 15 chars) names */
+ fprintf(stderr, "ERROR: my_thread_set_name() name too long: '%s'\n", name);
+ abort();
+ }
 }
 #else
 #define dbug_verify_thread_name(name) do {} while (0)

scripts/sys_schema/README.md

@@ -680,7 +680,7 @@ mysql> select * from io_by_thread_by_latency;
 +---------------------+-------+---------------+-------------+-------------+-------------+-----------+----------------+
 | root@localhost | 11580 | 18.01 s | 429.78 ns | 1.12 ms | 181.07 ms | 25 | 6 |
 | main | 1358 | 1.31 s | 475.02 ns | 2.27 ms | 350.70 ms | 1 | NULL |
-| page_cleaner_thread | 654 | 147.44 ms | 588.12 ns | 225.44 us | 46.41 ms | 18 | NULL |
+| page_cleaner  | 654 | 147.44 ms | 588.12 ns | 225.44 us | 46.41 ms | 18 | NULL |
 | io_write_thread | 131 | 107.75 ms | 8.60 us | 822.55 us | 27.69 ms | 8 | NULL |
 | io_write_thread | 46 | 47.07 ms | 10.64 us | 1.02 ms | 16.90 ms | 9 | NULL |
 | io_write_thread | 71 | 46.99 ms | 9.11 us | 661.81 us | 17.04 ms | 11 | NULL |
@@ -4904,7 +4904,7 @@ mysql> CALL sys.ps_setup_show_enabled(TRUE, TRUE);
 | innodb/io_read_thread | BACKGROUND |
 | innodb/io_write_thread | BACKGROUND |
 | innodb/io_write_thread | BACKGROUND |
-| innodb/page_cleaner_thread | BACKGROUND |
+| innodb/page_cleaner  | BACKGROUND |
 | innodb/srv_lock_timeout_thread | BACKGROUND |
 | innodb/srv_error_monitor_thread | BACKGROUND |
 | innodb/srv_monitor_thread | BACKGROUND |

scripts/sys_schema/procedures/ps_setup_show_enabled.sql

@@ -86,7 +86,7 @@ CREATE DEFINER='mariadb.sys'@'localhost' PROCEDURE ps_setup_show_enabled (
  | innodb/io_read_thread | BACKGROUND |
  | innodb/io_write_thread | BACKGROUND |
  | innodb/io_write_thread | BACKGROUND |
- | innodb/page_cleaner_thread | BACKGROUND |
+ | innodb/page_cleaner  | BACKGROUND |
  | innodb/srv_lock_timeout_thread | BACKGROUND |
  | innodb/srv_error_monitor_thread | BACKGROUND |
  | innodb/srv_monitor_thread | BACKGROUND |

scripts/sys_schema/views/p_s/io_by_thread_by_latency.sql

@@ -24,7 +24,7 @@
 -- +---------------------+-------+---------------+-------------+-------------+-------------+-----------+----------------+
 -- | root@localhost | 11580 | 18.01 s | 429.78 ns | 1.12 ms | 181.07 ms | 25 | 6 |
 -- | main | 1358 | 1.31 s | 475.02 ns | 2.27 ms | 350.70 ms | 1 | NULL |
--- | page_cleaner_thread | 654 | 147.44 ms | 588.12 ns | 225.44 us | 46.41 ms | 18 | NULL |
+-- | page_cleaner  | 654 | 147.44 ms | 588.12 ns | 225.44 us | 46.41 ms | 18 | NULL |
 -- | io_write_thread | 131 | 107.75 ms | 8.60 us | 822.55 us | 27.69 ms | 8 | NULL |
 -- | io_write_thread | 46 | 47.07 ms | 10.64 us | 1.02 ms | 16.90 ms | 9 | NULL |
 -- | io_write_thread | 71 | 46.99 ms | 9.11 us | 661.81 us | 17.04 ms | 11 | NULL |