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5e62b6a5e0
Almost all threads have gone - the "ticking" threads, that sleep a while then do some work) (srv_monitor_thread, srv_error_monitor_thread, srv_master_thread) were replaced with timers. Some timers are periodic, e.g the "master" timer. - The btr_defragment_thread is also replaced by a timer , which reschedules it self when current defragment "item" needs throttling - the buf_resize_thread and buf_dump_threads are substitutes with tasks Ditto with page cleaner workers. - purge workers threads are not tasks as well, and purge cleaner coordinator is a combination of a task and timer. - All AIO is outsourced to tpool, Innodb just calls thread_pool::submit_io() and provides the callback. - The srv_slot_t was removed, and innodb_debug_sync used in purge is currently not working, and needs reimplementation.
28 lines
823 B
Plaintext
28 lines
823 B
Plaintext
connect con1, localhost, root;
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create table t1 (a int) engine=innodb;
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insert t1 values (1),(2),(3),(4);
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delete from t1 where a=1;
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select user,state from information_schema.processlist order by 2;
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user state
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root
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root Filling schema table
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set global debug_dbug='+d,only_kill_system_threads';
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set global innodb_fast_shutdown=0;
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shutdown;
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connection default;
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disconnect con1;
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select user,state from information_schema.processlist order by 2;
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user state
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root Filling schema table
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set global innodb_fast_shutdown=1;
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select user,state from information_schema.processlist order by 2;
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user state
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root Filling schema table
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delete from t1 where a=3;
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set global innodb_fast_shutdown=0;
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ERROR 42000: Variable 'innodb_fast_shutdown' can't be set to the value of '0'
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kill ID;
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ERROR 70100: Connection was killed
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# restart
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drop table t1;
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