On Wed, Mar 15, 2006 at 05:42:40PM +0100, Mechain Marc wrote:
> I have a Mysql Server (4.1.8) where some sessions stay connected for a
> value greater than "Interactive timeout" value.
> 
> Here is an abstract of the "show processlist" command:
> 
> | 129996 | fret | mtt04.back:33598   | fret | Sleep       |   61756 |
> | 129998 | fret | mtt04.back:33599   | fret | Sleep       |   61759 |
> | 129999 | ets | mtt04.back:33600   | ets | Sleep       |   61759 |
> | 130000 | ets | mtt04.back:33601   | ets | Sleep       |   61759 |
> | 130001 | tls  | mtt04.back:33602   | tls  | Sleep       |   61755 |
> 
> The "show variables" command gives me:
> 
> Interactive_timeout 28800
> Wait_timeout 28800
> 
> Why those connections do still remains on the server with a value of
> 61700s while in a Sleep Command?
> 
> It is rather strange for me; they normally should have disappeared after
> 28800s of inactivity.
> 
> Could you give me a clue?
> 
> Marc.

Perhaps it's this:

        http://bugs.mysql.com/bug.php?id=16995

That's when using NPTL ("Native Posix Thread Library") under the 2.6
Linux kernel.  The bug report says killing one of the threads releases
them all.

--Pete

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