I can't help you, but I have been having the same problem.
( I had thought it was because we're running old code -
Stronghold with mod_perl 1.24. I'm really hoping it
goes away when we upgrade to 1.3.19 w 1.25, or at least
I can have a better chance debugging it. )
My solution for the hung readers problem is to write
another daemon that looks for them and kills them off.
In order to do this, the daemon uses the /server-status
URL to ask the web servers what processes are in the
read state.
If you want, I can post the code.
-P
> -----Original Message-----
> From: Kevin Slean [mailto:[EMAIL PROTECTED]]
> Sent: Thursday, May 03, 2001 10:38 AM
> To: [EMAIL PROTECTED]
> Subject: Apache Processes hanging
>
>
>
> Mod_perlers,
>
> I have a problem with Apache and was looking for your
> thoughts on my problem
> or some additional mailing lists more focused on just Apache.
>
> I have 70 httpd daemons running and some of them just appear
> to hang. As
> time goes by, the number of hung processes increases such
> that there are no
> working ones left to perform real work. Consequently
> transaction processing
> performance drops eventually to zero.
>
> Our web transactions running through these httpd daemons
> should not take
> more than 60 seconds in a worst case scenario. Yet, some of
> these 'hung'
> processes have been on the same transaction for over 30 hours. I
> originally thought that this was a mod_perl problem and was
> buried in the
> CGI/Perl routines performing the transactions. However, upon closer
> inspection, I have found that these hanging processes are
> also running JAVA
> servlets and gif gets. This makes me suspect that it is an
> Apache problem.
>
> I ran truss on the hung processes and found that they fell
> into two camps.
> The first group was sitting at a read system call. The
> second group was in
> a loop with sigalarm going off every 10 seconds.
>
> We are running the following:
>
> Hardware: Sun Ultra-250
> OS: Solaris 5.7 patch level 106541-12
> Apache: Apache/1.3.11 (Unix) ApacheJServ/1.1.2 mod_perl/1.24
> secured_by_Raven/1.4.2
>
> Any ideas, thoughts, and comments are welcome. Thanks.
>
> Kevin
>
