Slow Worker Process Startup

I'm having a problem with the amount of time it takes to initialize an
application pool on IIS 6.0. Upon the first request to an ASP.NET
page the worker process (w3wp.exe) starts up. The problem in my case
is that it takes more than 5 minutes to begin servicing requests after
the initial startup. During that agonizingly long period the process
is doing nothing...and I mean absolutely nothing...0% CPU and no
memory movement at all. And then all of sudden the CPU spikes and the
page is rendered in a split second. This happens to any web app no
matter how simple or complex. I'm seeing the problem on a dozen
Windows 2003 boxes all built exactly the same way. Has anyone else
experienced this?

RE: Slow Worker Process Startup

you are probably getting some network timeout behavior (maybe authenication
of the service account). a network trace ought to tell.

-- bruce (sqlwork.com)


"Brian Gideon" wrote:

> I'm having a problem with the amount of time it takes to initialize an
> application pool on IIS 6.0. Upon the first request to an ASP.NET
> page the worker process (w3wp.exe) starts up. The problem in my case
> is that it takes more than 5 minutes to begin servicing requests after
> the initial startup. During that agonizingly long period the process
> is doing nothing...and I mean absolutely nothing...0% CPU and no
> memory movement at all. And then all of sudden the CPU spikes and the
> page is rendered in a split second. This happens to any web app no
> matter how simple or complex. I'm seeing the problem on a dozen
> Windows 2003 boxes all built exactly the same way. Has anyone else
> experienced this?
>

Re: Slow Worker Process Startup

On Apr 8, 1:41=A0pm, bruce barker
wrote:
> you are probably getting some network timeout behavior (maybe authenicatio=
n
> of the service account). a network trace ought to tell.
>
> -- bruce (sqlwork.com)
>
>
>
> "Brian Gideon" wrote:
> > I'm having a problem with the amount of time it takes to initialize an
> > application pool on IIS 6.0. =A0Upon the first request to an ASP.NET
> > page the worker process (w3wp.exe) starts up. =A0The problem in my case
> > is that it takes more than 5 minutes to begin servicing requests after
> > the initial startup. =A0During that agonizingly long period the process
> > is doing nothing...and I mean absolutely nothing...0% CPU and no
> > memory movement at all. =A0And then all of sudden the CPU spikes and the=

> > page is rendered in a split second. =A0This happens to any web app no
> > matter how simple or complex. =A0I'm seeing the problem on a dozen
> > Windows 2003 boxes all built exactly the same way. =A0Has anyone else
> > experienced this?

I took a look at the security event log. What I found was
interesting. Everytime the w3wp.exe process starts up for the first
time (and I did this at least half a dozen times to verify the
behavior) the following event will appear 5min and 20s later just
before the first request is served and delivered to the client.

It appears as if the WinHttpAutoProxySvc service is being sent some
kind of control request. I tried starting the service, stopping it,
disabling it, and setting it to manual and it makes no difference.
Somehow these events keep appearing just seconds before the worker
process is finally able to serve requests. I can't help but think it
is related somehow.

Event Type: Failure Audit
Event Source: Security
Event Category: Object Access
Event ID: 560
Date: 10/19/2005
Time: 3:31:00 PM
User: NT AUTHORITY\NETWORK SERVICE
Computer: APPTEST
Description:
Object Open:
Object Server: SC Manager
Object Type: SERVICE OBJECT
Object Name: WinHttpAutoProxySvc
Handle ID: -
Operation ID: {0,1201331}
Process ID: 612
Image File Name: C:\WINDOWS\system32\services.exe
Primary User Name: APPTEST$
Primary Domain: LAB
Primary Logon ID: (0x0,0x3E7)
Client User Name: NETWORK SERVICE
Client Domain: NT AUTHORITY
Client Logon ID: (0x0,0x3E4)
Accesses: Query status of service
Start the service
Query information from service


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