Mel wrote:
On Friday 28 November 2008 11:52:26 Ott Köstner wrote:
Second computer FreeBSD 7.1-PRERELEASE #3 (exact copy / paste):
# ps -ax|grep mysql; echo; ps -axH|grep mysql
1015 con- I 0:00.01 /bin/sh /usr/local/bin/mysqld_safe
--defaults-extra-file=/var/db/mysql/my.c
1079 con- S 582:49.60 [mysqld]
1015 con- I 0:00.01 /bin/sh /usr/local/bin/mysqld_safe
--defaults-extra-file=/var/db/mysql/my.c
1079 con- S 2:00.40 [mysqld]
1079 con- I 0:00.00 [mysqld]
1079 con- I 0:01.32 [mysqld]
1079 con- I 0:47.04 [mysqld]
1079 con- I 0:03.56 [mysqld]
1079 con- S 0:26.43 [mysqld]
1079 con- S 3:13.97 [mysqld]
1079 con- S 4:12.72 [mysqld]
1079 con- S 0:03.72 [mysqld]
582 minutes is clearly wrong.
Not if it's the sum of all threads that lived and died during the lifetime of
the process. It's value is taken from the kernel's idea of the runtime. With
KERN_PROC_INC_THREAD set, it will look at the thread storage for active
threads, including the 'main()' thread.
I haven't looked into detail, but I suspect when a thread dies it gets added
to process runtime, and is stored nowhere else.
I see. Thank You!
Aside from the different machines, you also took 2 different daemons, which
fits this:
named uses a static thread pool, by design, sum(nthreads) will equal the
process time
mysqld uses a dynamic thread pool, sum(nthreads) is really
sum(nthreads_active).
I haven't looked into detail
I see.
Regards,
O.K.
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