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The MySQL server creates the following threads:
process_alarm()
to force timeouts on connections
that have been idle too long.
mysqld
is compiled with -DUSE_ALARM_THREAD
, a dedicated
thread that handles alarms is created. This is only used on some systems where
there are problems with sigwait()
or if one wants to use the
thr_alarm()
code in ones application without a dedicated signal
handling thread.
--flush_time=#
option, a dedicated thread is created
to flush all tables at the given interval.
INSERT DELAYED
gets its
own thread.
--master-host
, a slave replication thread will be
started to read and apply updates from the master.
mysqladmin processlist
only shows the connection, INSERT DELAYED
,
and replication threads.