Search results matching tag 'performance'

Time lags and delays on iis

ch0my — Mon, 30 Nov 2009 12:24:02 GMT

Hello all,

Hopefully I will get an answer to this question as this is bothering us for a long time. we have two web apps on same server. One is calling another using http or soap (this doesn't have influence on delay issue). At random times it happens that in the log we see that app1 issues request with some delay to app2. Everything in both apps works fine and we are sure that this is related to some configuration issue but we don't have a clue...

Anyone expirienced something like this before?

Thanks in advance!

Shared config "Configuration Performance" speed

Dominic D — Fri, 13 Nov 2009 22:31:04 GMT

We have an IIS7.5 farm using shared config which is stored on a central file server (A NAS appliance that i believe runs Samba under the hood).

This started out pretty small 2 servers, less than 10% cpu, and just 1 site. Over time, we've migrated more and more apps to this newer farm from our IIS6 installation. As it stands now, there are 6 servers, averaging around 60% cpu, and around 20 business apps.

We've been extremely happy with both IIS7.5 and shared config. A lot more consistency across the farm, and lower provisioning time. One thing I've started to notice is configuration changes now take significantly longer (up to 1 minute) whereas before they were almost instantaneous. This includes anything from creating a new site, to a new WP, to modifying authentication settings on a site. It's not really a problem, its still infinitely faster and better than making individual changes on all nodes. It's more my curiosity. Pretty much all of my variables changed at the same time, so I really don't know whether its the # of apps, # of servers, or cpu load thats slowed this down.

Has anyone else experienced anything like this?

Re: Force site URL

DanielVL — Mon, 02 Nov 2009 18:19:59 GMT

URL Rewrite is cache friendly, meaning that for frequently hit URLs the redirection will happen really fast, a hashtable look up and then a native Redirect call. Expect great performance.

Speeding Up Response

karbonphyber — Wed, 28 Oct 2009 21:36:16 GMT

Hi all,

This is my first post and i've tried searching for it but the search functionality just doesn't seem to work. =\

So here it is:

I've been reading up on IIS7 running ASP.NET apps for good reason. Reasons are to increase reliability as well as performance. The particular ASP application we're running is DotNetNuke, i'm not sure if IIS7 should be configured uniquely to handle it but so far we've been running DNN on:

its own application pool which sports the following configuration

Integrated pipeline mode
Default of a 1000 queue length
Default Idle Time-out of 20
One (1) Worker Process
Recycling at Regular Time Interval 29hrs
Recycling at Specific Times 0300hrs

Currently I'm pushing for us to allocate time to view the logs created by IIS on traffic so that we can pull figures out from the charts created which could help us with

Keeping these DNN sites alive so they don't have to recompile on request after there's been a long period of inactivity (Time-out)
Increasing the response speed of the site. Our monitoring tools recorded three (3) performance violations in an hour. It was to pick out response times of more than three (3) seconds. This knowledge coupled with the IIS Stats could give us a business reason to drive more visitors in.

I've read that increasing Worker Processes would assist in response time and have read a few testimonials that showed evidence of it obtaining remarkable results and so have increased Worker Processes to 2 for trials.

In the meantime, I've read that InProc session states would not be maintained as each W3WP has it's own boundaries and does not share sessions. Will using ASP.NET's ViewState be affected in any way? In the future, another application that will be deployed, will use simple Sessions. Will that break?

I was hoping to obtain a cleaner site, closer to opening times, so was hoping to recycle at about 7am instead of 3am. Would that help stability at all?

In DNN, there is a KeepAlive.aspx file which refreshes every now and then. The aim was to connect to that page and let it refresh to keep the site alive. It has worked in keeping the site alive and the payload returned is extremely small, which is a plus! Couple this with traffic stats from IIS and we should have an answer as to how long to adjust keep-alive.

Are there any side-effects of increasing keep-alive? I'm guessing that keeping the connection alive for too long would reduce the availability of connections to new visitors?

Now that you know my story...

How should we go about increasing stability and performance?

Worker Processes
Worker Threads - Can we adjust this??
Recycling Times

Thanks Experts!!!!

FTP client times out on directory change

computerlady911 — Tue, 27 Oct 2009 19:20:45 GMT

Every time I connect to my ftp server, the connection initially works fine but if I click on any directory the client times out the first time. If I wait until after I get the error, then try again it will work. I am using IIS6 for the ftp and filezilla for the client.

This is how the filezilla reports the command and error.

Command:    CWD /folder name/folder name/Folder Name
Error:    Connection timed out
Error:    Failed to retrieve directory listing

I increased the timeout settings to 1200 sec but no change. Again it does work the second time I try to click on the folder. But this is not a satisfactory result for my users. It happens on every folder.

Any performance tips & tweaks?

samunplugged — Mon, 05 Oct 2009 18:00:42 GMT

Hello,

I am planning to rent a new server that has four cores (11ghz)/4GB RAM. The other option is to rent a server with multi-processor and multi-cores (18ghz)/8GB RAM. Both would run Windows Server 2008 Web edition (x64 bit).

I will be running web-sites written in ASP.net and some other sites running on PHP (FastCGI) and ColdFusion (IIS6 Compatability ISAPI module). The server would host both MySQL and SQL Server 2008 web edition.

Can somebody explain to me if my web applications on IIS will actually benefit from the powerful systems? What default settings I should change?

What should be done to completely harness the power of multi-core or multi-processor server on PHP, ColdFusion, IIS and MySQL?

I'm not so worried about SQL Server 2008, cos I know it just rocks.

But any tweaks on any of the mentioned servers would be appreciated.

Thanks.

Best

Sameer

Website not responding

manishsingh — Fri, 11 Sep 2009 11:40:45 GMT

My webserver which is hosting multiple site on IIS 6.0 is getting stucked after few hours..the static pages is coming from webserver but the pages whic are dynamic is not responding..it again comes up only when we recycle the Application pool for the sites from IIS..

Asp.net framework2.0, SQL server2005 and IIS6.0

Please help Thanks in advance ....

IIS 6 - ServerGotRequest vs ServerBeginResponse

AlexRosa — Mon, 07 Sep 2009 12:02:59 GMT

Analyzing a Fiddler session we noticed that almost 98% of the overall elapsed time was included between ServerGotRequest and ServerBeginResponse.

Example:

ACTUAL PERFORMANCE

--------------

ClientConnected: 13:54:21:7882

ClientDoneRequest: 13:54:21:7882

Gateway Determination: 0ms

DNS Lookup: 0ms

TCP/IP Connect: 0ms

ServerGotRequest: 13:54:21:7882

ServerBeginResponse: 13:54:24:0851

ServerDoneResponse: 13:54:24:1007

ClientBeginResponse: 13:54:24:1007

ClientDoneResponse: 13:54:24:1320

Overall Elapsed: 00:00:02.3437950

I could'nt find any article explain it why this occurs.

This behavior occurs on each request (AJAX and ASP.NET code), specially when the request come from Internet. When the request come from intranet the difference are only milliseconds.

What this difference means?

Thanks in advance.

WCAT script that uses website input

Victor75 — Wed, 02 Sep 2009 20:03:20 GMT

I'm using WCat 6.3.1 on WinXP to test a ASP application running on IIS 6.0.

The application is owned by a third party, so I have no means of adjusting it. To complete a transaction you need to submit a form. The problem is a hidden input field, that changes every time.

Is there anyway of capturing (part of the) data that comes from the webserver and re-use that in the script?

If a solution was already posted somewhere else, please tell me where, as I could not find anything any where.

how to determine the values for app pool ?

varshini — Wed, 26 Aug 2009 13:24:23 GMT

Hi,

How to determine the best value for maximum virtual memory setting in app pool and the number of minutes to recycle worker process for best performance ?

Thanks