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From "Ian Holsman" <li...@holsman.net>
Subject Re: What is the source of this 'Thundering herd' redux?
Date Tue, 07 Jan 2003 16:04:06 GMT
On Mon, 06 Jan 2003 15:46:56 -0800, Brian Pane wrote:

> Steven Roussey wrote:
> 
>>>pstack should be able to find the symbols if you compile and link with
>>>-g
>>>    
>>>    
>>>
>>Yes, and ./configure with --without-execstrip helps quite a bit too... :)
>>
>>Now, pstack simply segfaults.
>>
>>	[root@morpheus root]# pstack 5922
>>	5922: /usr/local/apache/bin/httpd
>>	pstack signal received: Segmentation fault
>>
>>
> The only two solutions I can think of are:
>   - Try a newer version of pstack, if applicable. - If that doesn't work,
>   try gdb.  You might be able
>     script gdb so that it loops through a list of pids and does an
>     attach/backtrace/detach for each.
> 
> Brian


this is a bit left-field, but can you check if the logging is working
correctly, we have seen some weird behavior when we can't write to the log
files due to a pipe being full or something else which blocks the write.


TIA
Ian


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