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Date: Wed, 19 Sep 2001 10:07:02 +0200 (CEST)
From: Giuliano Pochini <pochini@shiny.it>
To: "Albert D. Cahalan" <acahalan@cs.uml.edu>
Subject: Re: Strange ps line
Cc: linux-kernel@vger.kernel.org,
        <flavio@conectiva.com.br (Flavio Bruno Leitner)>
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>>> From "ps axuw":
>>> 
>>> USER       PID %CPU %MEM   VSZ  RSS TTY      STAT START   TIME COMMAND
>>> httpd     5020  0.0  0.0     0    0 ?        Z    16:46   0:00 [getcod.cgi <defunct>]
>>> httpd     5022  0.0  0.0     0    0 ?        Z    16:46   0:00 [getcod.cgi <defunct>]
>>> httpd     5025  0.0  0.0 589505315 0 ?       ZL   16:46   0:00 [getcod.cgi <defunct>]
>>> httpd     5049  0.0  0.0     0    0 ?        Z    16:46   0:00 [getcod.cgi <defunct>]
>>> 
>>> That cgi doesn't lock memory and surely I don't have so much memory.
>> 
>> Look at http://www.erlenstar.demon.co.uk/unix/faq_2.html#SEC14
>> maybe this can help you. 
> 
> Yes and no. It might solve his zombie problem, but what about that
> outrageous VSZ and the locked memory? Useful info would be:
> 
> /proc/5025/status
> /proc/5025/stat

That strange line is extremely rare. Actually it's the first time I see it and
I was unable to reproduce. And since it's a zombie it just didn't live enough
to type "cat /proc/....". I think there is a race somewhere. I don't know if
it's dangerous of if it only accects /proc reads sometimes ?


Bye.