Re: major iis5 asp performance problems

From: David Wang [Msft] (someone_at_online.microsoft.com)
Date: 07/21/04 

Date: Wed, 21 Jul 2004 15:05:59 -0700

Use IIS State on the bad dllhost/inetinfo.exe during the 30+ seconds it
takes to load, and post the log here. Let's see what is going on inside that
dllhost.exe...

http://www.iisfaq.com/default.aspx?view=P197

Right now, it sounds like on the bad machines that you run out of physical
memory and dip into virtual memory, at which point hard-drive thrashes and
performance goes out the window. Since you only have 128MB in the machine
and the OS took about half of that, if any app gets over 50-60MB, things are
going to thrash badly and weird things can happen. So, interesting question
is why the app gets to 50-60MB (whether it is actually expected or not).

It's not certain to me why you run a web app on many isolated web servers --
seems like the Internet is all about running ONE web server with many
light-weight clients -- so you only need more RAM for that one web server
and not 2000 clients. If the web app is *meant* to be stand-alone, then that
is very, very weird. You can probably do better with a simple stand-alone
VB program to stitch the VB/COM calls together with a superior UI in very
little time. 

-- 
//David
IIS
This posting is provided "AS IS" with no warranties, and confers no rights.
//
"tparks69" <tparks69@discussions.microsoft.com> wrote in message
news:CC85CE31-1515-4D2D-B348-A579E122F079@microsoft.com...
I know we need more RAM its just a matter of how to get more RAM for 2000
computers!  We don't have the money or manpower right now to upgrade.
Besides the app runs fine on most of the computers, its just some of them
have this problem, so I'm thinking there must be an issue with some
configuration setting somewhere.
Tom
"Paul Lynch" wrote:
> On Tue, 20 Jul 2004 12:58:01 -0700, "tparks69"
> <tparks69@discussions.microsoft.com> wrote:
>
> >OK we have a set of laptop computers each running IIS5.  Every laptop is
a virtual clone of each other.  We have a web app running on the localhost
on each laptop.  On most of the laptops, the response time between ASP pages
is in the 1 second range.  On other machines, the response time is
terrible... in 30+ seconds per page (I've heard up to 6 minutes per page
from users).
> >
> >When I watch the inetinfo and dllhost processes in the task manager, I
note the following differences in the bad machines vs the good ones:
> >
> >Good:  inetinfo.exe process starts out with around 4MB of memory
> >Bad:    inetinfo.exe is only getting like 1-2MB of memory
> >
> >Good:  dllhost starts out with around 10MB memory, goes up to 11-12MB
when calling our VB COM+ dlls to post/process data, then goes back to 10MB
after page loaded. (again, page loads in like 1 second)
> >Bad:    dllhost starts out with around 10MB, but shoots up to 50-60
sometimes 80MB while processing the page.  during this time the harddrive
light is almost constantly on.  (the page is taking 30+ seconds to load)
> >
> >I don't think the application code is the problem since on most boxes
pages load in < 1 second.  Keep in mind there is only one user at a time on
the site as it is running local and disconnected.
> >
> >I have looked at:
> >- Virtual memory settings
> >- IIS performace tab settings
> >- caching settings in IE
> >- running COM+ objects in library application instead of server
application
> >- shutting down extraneous services to conserve memory
> >- changing the IIS max memory settings in the registry
> >- defragging the harddrive
> >
> >and more.... none of these things have helped.
> >
> >The environment is: Win2K Pro SP4, 128MB ram per box (we cannot upgrade
this so don't tell me we need more RAM), IE 6.0.2800.1106 SP1, IIS5
> >
> >I was wondering if one of you guru's out there might have some
suggestions... we're pretty desperate here, so any help is appreciated.
> >
> >Thanks!
> >Tom
> >
>
> Tom,
>
> Whether you like it or not you need to find a solution which includes
> running IIS5 on machines with more than 128MB of memory. 512MB is a
> sensible entry level for any kind of production machine.
>
>
> Regards,
>
> Paul Lynch
> MCSE
>

Relevant Pages

  • Re: Persisting a Dataset
    ... I'm not sure you're going to get around the memory issue without possibly ... which would load the table into memory and serve all the exes. ... > I have a Windows Forms app deployed on Terminal Server. ... One of these datatables has about 5000 ...
    (microsoft.public.dotnet.framework.adonet)
  • Re: Type 2 crashes
    ... >> Thinking it might be lack of program memory I have increased Word's memory ... > setting asks for more memory to allow the app to work efficiently. ... > settings, as well as any other applications running. ... * Before posting a question about a topic, ...
    (microsoft.public.mac.office.word)
  • Re: Threads on an Intermec 751 plist
    ... Our app starts up and loads a splash page. ... we load registry settings first. ... Then we load our main menu form, which looks for a global employee ...
    (microsoft.public.dotnet.framework.compactframework)
  • Re: memory and page faults (continued)
    ... settings - it depends on the DB configuration, the amount of memory, the load on ... Values of 3-8 or 5-10 look about right to me; 15-40 is a bit conservative for a system with a decent amount of memory. ...
    (AIX-L)
  • Re: Type 2 crashes
    ... Memory to be there, and tends to crash a lot if it isn't. ... you have to allocate the "running" memory for applications by hand. ... >> setting asks for more memory to allow the app to work efficiently. ... >> settings, as well as any other applications running. ...
    (microsoft.public.mac.office.word)