Re: App load times slow on first start up
- From: jturner <codezilla94@xxxxxxxxx>
- Date: Mon, 17 Dec 2007 18:03:38 -0800 (PST)
On 29 Oct, 22:39, stch...@xxxxxxxxxxxxxxxxxxxx (Steven Cheng[MSFT])
wrote:
Hi SAL,I had the same problem. The reason is that the application domain
As other members mentioned, for ASP.NET 2.0 web application, you can
perform precompilation on your web app so as to gain performance
improvement as precompiled application do not need additional dynamic page
code generation time. However, there are still startup time for
JIT-compiling .NET code into native code. For your scenario, if there is
no other particular long-run task at initialize time(such as the
application_Start event...), the startup slow should be caused by JIT
compile. How often will you notice this problem? I know that ASP.NET will
shutdown worker process after it hasn't been visited for a while. And you
can configure it to never shutdown through the following means:
** for IIS5 hosted scenario, you need to modify the <processModel> element
in machine.config , see:
#Keeping Your ASP.NET Worker Processes Alivehttp://weblogs.asp.net/dmarsh/archive/2003/02/21/2758.aspx
** for IIS6, since it use application pool for each application virutal
dir, you need to turn off the shutdown setting in application pool setting.
You can find it in the "performance" tab:
"shutdown worker process after being idle for xxxxxx time"
also see "Idle timeout" in below reference:
#Configure Application Pool Performance (IIS 6.0)http://www.microsoft.com/technet/prodtechnol/WindowsServer2003/Librar...
d3f37b8-c7ef-4a9c-9b78-eba9412181d8.mspx?mfr=true
Here is also a good aritlce on IIS worker process recycle:
http://blogs.msdn.com/david.wang/archive/2006/02/07/ASP-Startup-Shutd...
malies-on-IIS6.aspx
Hope it also helps some.
Sincerely,
Steven Cheng
Microsoft MSDN Online Support Lead
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-------------------->From: "SAL" <S...@xxxxxxxxxxxxx>
References: <#utcookGIHA.4...@xxxxxxxxxxxxxxxxxxxx>
<1193681633.865374.199...@xxxxxxxxxxxxxxxxxxxxxxxxxxxx>>Subject: Re: App load times slow on first start up
Date: Mon, 29 Oct 2007 14:21:50 -0700
Cold Fusion is, as I understand it, java byte code?
I compiled the app on the server and it got a little faster but it's still
pretty slow comparitively speaking. After the compile it went from 17
seconds to 9 seconds to load.
So, anytime the app site idle for a while, it's the slow startup times.
Anybody else got any ideas?
"Larry Bud" <larrybud2...@xxxxxxxxx> wrote in message
news:1193681633.865374.199150@xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
On Oct 29, 12:38 pm, "SAL" <S...@xxxxxxxxxxxxx> wrote:
I have an ASP.NET 2.0 app that takes about 17 seconds to load on first
startup but then is very fast after that. As I understand it from some
posts
in June, this is caused by the loading of the App Domain.
We have both Cold Fusion and ASP.NET apps on this server and the Cold
Fusion
apps do not display such slowness on their first start up of the day. Is
there a way to improve the load times of ASP.NET apps?
I'm having to justify to my boss about why this is occuring.
The project is compiling the first time it's hit on your production
server.
Cold Fusion isn't compiled code.
times out every 20 mins if there is no activity, the first request
after the timeout can force a recompile and reload of cache. Changing
some settings in the machine.config file will solve the problem;
unfortunately for me my hosting provider would not allow me to make
this change. I found this utility to be useful.
http://www.spikesolutions.net/ViewSolution.aspx?ID=c2b7edc0-5de1-4064-a432-05f6eded3b82
Essentially it "Pings" my home page every few mins so the application
domain does not time out. The utility can also be configured to ping
more than one page so that auxiliary pages are fast too.
.
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