[rt-users] Hanging Login Page (ModPerl2, HTTPD, Oracle, RHEL5)

[Charles Kugelman]

Final update on this (I hope):

Friday evening, I reinstalled DBIx-SearchBuilder and DBD-Oracle and RT
has been responding flawlessly since.

Confusing... hope it sticks.

-CK
 
-----Original Message-----
From: rt-users-bounces at lists.bestpractical.com
[mailto:rt-users-bounces at lists.bestpractical.com] On Behalf Of Charles
Kugelman
Sent: Wednesday, April 08, 2009 4:04 PM
To: rt-users at lists.bestpractical.com
Subject: Re: [rt-users] Hanging Login Page (ModPerl2, HTTPD, Oracle,
RHEL5)

Thanks for your response Jesse.

The answer that I received from the guy who manages the VM is as
follows:

"Snapshots are created for the backup process but they are removed
immediately after it is finished"

I've confirmed that the issue is reproducible by simply letting RT sit
for a couple of hours, untouched (no connections to the front end).

We tried lowering the memory to 768MB and the issue is still present; so
we bumped it back to 2GB.

Any other ideas? Should we be entertaining the idea of moving this off
of a VM?

-CK 

-----Original Message-----
From: Jesse Vincent [mailto:jesse at bestpractical.com] 
Sent: Tuesday, April 07, 2009 4:22 PM
To: Charles Kugelman
Cc: rt-users at lists.bestpractical.com
Subject: Re: [rt-users] Hanging Login Page (ModPerl2, HTTPD, Oracle,
RHEL5)




On Tue, Apr 07, 2009 at 03:58:35PM -0400, Charles Kugelman wrote:
> Joop,
> 
> Thanks for the response. In fact we just bumped the VM to 2GB to see
if
> that might help the performance issue, it did not.
> 
> We'll give your suggestion a shot and report back.
> 

Out of curiosity, do you have snapshots on the VM your oracle database
is on?

> Thanks again!
> 
> -CK
> 
> -----Original Message-----
> From: Joop van de Wege [mailto:JoopvandeWege at mococo.nl] 
> Sent: Tuesday, April 07, 2009 3:45 PM
> To: Charles Kugelman
> Cc: rt-users at lists.bestpractical.com
> Subject: Re: [rt-users] Hanging Login Page (ModPerl2, HTTPD, Oracle,
> RHEL5)
> 
> Charles Kugelman wrote:
> > Ken,
> > 
> >  
> > 
> > Thanks for the response. The problem in fact presents itself even
> before 
> > we get to that point (the home page). Essentially, it's the login
page
> 
> > where we see the problem. We come in (in the morning, after RT has
> been 
> > sitting all night with no activity) and open our browsers and we're
> not 
> > presented with the login page, but instead just a white page which 
> > proceeds to "load" for 20 minutes before we're finally prompted for 
> > login. As noted, jamming the F5 button several times will "nudge"
the 
> > login page to appear instantly. CPU util is nearly nothing all the
> time 
> > on this VM, as well.
> That might be your problem, together with something you'll probably
find
> 
> hard to believe.
> Our setup is more or less the same, Oracle XE together with RT-3.8.2
on 
> Ubuntu in a VM running on VMware server 1.0x and also using 1Gb of 
> memory and that I have found is a breakpoint in performance. Using
only 
> 786Mb of memory will yield a far more responsive system in the
morning, 
> especially monday morning, than the 1Gb VM. Our test instance is even 
> worse then that. Apaches weekly logrotate, cronjob, will cause Apache
to
> 
> not restart. A tell tale sign that your VM has gone to 'sleep' is to
ssh
> 
> into it. You'll see terrible connection time whereas if you have been 
> using the VM a while it will connect in an instant.
> 
> Maybe this helps you narrow it down,
> 
> Joop
> 
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