On Mon, Jul 08, 2002 at 09:46:08AM +0200, Ireneusz Piasecki wrote:
> I have build mysq from source rpm with gcc 2.95-2 on my linux 6.2 box,
> kernel 2.2.19.
>
> When i do ps -ax on shell, i see below
>
> 5807 ? Z 0:00 [mysqld <defunct>]
>
> this happens somtimes, but table are'nt coruppted. I have checked it.
>
> It is dangerous for my system, that server MySQL is sometimes defunct
> (zombie). I noticed, he is selfrepaired, sencond time when i make ps -ax,
> all is allright. server is running as usual (no zombie).
Not all that abnormal, and in fact, these are common UNIX semantics.
If a child process terminates (on Linux these are threads), they are
marked defunct/zombie until the parent process gets around to "reaping"
them. Which is why they're absent from a second process listing.
See fork(2) and wait(2), waitpid(2), etc.
--
Michael Bacarella | Netgraft Corporation
| 545 Eighth Ave #401
Systems Analysis | New York, NY 10018
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