COM+ Failures

I'm running a web server (windows server 2k3 IIS, not active directory) and
once or twice a week I will get COM+ failures. Once these failures begin, I
see error events logged rapidly until the server fails and has to be
restarted.

I would like to know what I should look at in order to address this issue.
The web server is a little oversubscribed for its hardware spec, and I am in
the process of moving websites off of this server to 2 new servers, although
this process is somewhat slow as I have to balance this migration with
seamlessness to the customer.

I try to keep the server as quiet as possible, with application pool
restarts wherever needed to bring down the commit charge, and iis restarts
"out of hours" (whatever that means in a www environment!)

I would appreciate any suggestions about how to begin addressing this issue,
and can provide further information as needed...

V.

Luciano
Sun Oct 30 10:35:18 CST 2005

Hi The Vogon,
How many websites do you have on your server?
Which COM+ fails (it's your COM+?)?
What's the configuration of your AppPool?

Bye

TheVogon
Sun Oct 30 12:49:02 CST 2005


Currently 977 websites, how many of which are running applications I can't
easily say. Each one is generally having its own application pool. Some
websites (notably around 30) definately have heavy applications. As I'm
writing this there are about 75 www worker processes running.

The errors I see (when they start once or twice a week) are rapidly
generated by the COM+ Event Service, and I suspect due to disk write/paging
errors resulting from the heavy load on the server.

AppPool config varies, the majority of sites are capped to recycle at 192Mb
RAM/500Mb Virtual, 35000 requests, 10mins of idle and the rest of the
settings default. Some websites have a higher limit (up to 256Mb RAM/640Mb
Virtual), else their apps recycle every few minutes or less.

If you'd like any further info, let me know...



"Luciano Castro [MCAD]" wrote:

> Hi The Vogon,
> How many websites do you have on your server?
> Which COM+ fails (it's your COM+?)?
> What's the configuration of your AppPool?
>
> Bye
>
>

Luciano
Mon Oct 31 07:31:52 CST 2005

Try to use this to find if is a website your problem:
http://www.microsoft.com/downloads/details.aspx?FamilyID=01C4F89D-CC68-42BA-98D2-0C580437EFCF&displaylang=en

Have you some error code or message in your eventLog?


Bye,
Luciano

TheVogon
Wed Nov 02 13:35:04 CST 2005

ok... thanks...

I've installed the IIS tools and I'll take a look and see what I can find.
The main problem was that I didn't have any analysis tools for this kind of
thing, the native management tools with win2k3server and IIS can't give any
useful or specific information.

This should be enough for me to find the problem, but I'll post back should
I need to...

Thanks!

"Luciano Castro [MCAD]" wrote:

> Try to use this to find if is a website your problem:
> http://www.microsoft.com/downloads/details.aspx?FamilyID=01C4F89D-CC68-42BA-98D2-0C580437EFCF&displaylang=en
>
> Have you some error code or message in your eventLog?
>
>
> Bye,
> Luciano
>
>