Re: major iis5 asp performance problems
From: David Wang [Msft] (someone_at_online.microsoft.com)
Date: 07/21/04
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Date: Tue, 20 Jul 2004 23:56:16 -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).
-- //David IIS This posting is provided "AS IS" with no warranties, and confers no rights. // "tparks69" <tparks69@discussions.microsoft.com> wrote in message news:422DC8F8-402E-4DA8-98D3-809718EF130B@microsoft.com... 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
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