Spikes in latency
Hi All,I am running a web farm of IIS7 on Server 2008 Web edition. We max out at 150 hits/sec at peak times load balanced across 4 servers.One of our customers is complaining they are getting time outs...
View ArticleII8 Output Caching
Hi,I have enabled kernel cache with "using file change notifications" option.My ApplicationPool has below settings:Regular Time Interval: 1740 minutesIdle-Time Out: 1739 minutes My registry...
View ArticleIIS 7.5 Scaling and Optimization - Help with flooding of new requests
I have an mvc4 web api that services on average (W3SVC_W3WP) 50req/sec (per each server) on 4 physical servers (xeon 2.5Ghz 6 core 12 logical processors with 64G memory running win2008R2...
View ArticleServer too busy warning while servers arent't busy at all...
Last week we updated our (cluster) hosting environment to Windows Server 2012 and IIS8. Since the update we experiencing some "server too busy" warnings onaspx-sites (asp.net).We have multiple load...
View ArticlePages appear to stop responding
We're running IIS7 on WS08. I have experienced SEVERAL times when I'm accessing a page on this server where it will simply stop responding. The load progress bar will show no progress at all, and...
View Articleweb garden memory usage
When I'm using web garden to start 5 w3wp processes, I found that one of the processs always takes a lot of memory and reachs about 2G, but the others 4 remain 800m or so, seems the load is mainly...
View ArticleSome application pools are very slow at first load
Hello,We have a strange problem on our Windows 2008 R2, IIS 7.5 webserver. Recently we've started on updating some of our website's to .NET 4.0, but we noticed that some of them load very very slow at...
View ArticleIIS output cache execution order when multiple requests to unfinished request
Hello,can anybody please point me to some usefull documentation or give me detailed explanation ?Situation:IIS receives request to ashx handler (querystring based) that is setup to have output cache...
View ArticleIIS 7.5 with 64 bit ISAPI dll with 32 bit Application pool
We have configured a 32 bit application pool running on IIS 7.5 64 bit. We have a 3rd party ISAPI filter and there is only 64 bit version available. Is there anyway in which we can have the filter...
View Articleconcurrent connections causes request waiting
Environment: windows server 2008 R2 64bit, IIS7.5, ASP.NET 4.0 WebSite.Problem Description:When my websit's current connections is below 500 ( from the performance monitor in Advanced settings),...
View ArticleDynamic compression not working IIS7.5
Hello,I wonder if you can help me, I have turned on IIS Dynamic and Static Compression on our web server but it is not working. I have seen lots of posts with similar issues that I have followed but...
View ArticleDecrease performance when ASP.NET 3.5 installed on IIS 7.5 from IIS 6
Hello all, when I've installed my ASP.NET 3.5 intranet web application on IIS 7.5 - having the same database (SQL Server 2008) - the performance have falled down, and appear some connection or database...
View ArticleIIS Request Queuing
Hi All,I have a WCF Restfull service that receives too many synchronous requests; I want to make sure that the IIS do not discard any request.I did a stress test (150 requests per second) and the IIS...
View ArticleIIS 7 Recycle Settings
We are getting an error when we try to set the app pool recycling to a specific time every 7 days. We want to recycle it every 7 days at 3 am. The doc says it is possible by using the optional [d]...
View ArticleTune IIS for 10k+ concurrent connections
Hi all, We have a server with 64 gigs of RAM to spare. We're running a Python based app on IIS through HeliconTech. How can we tune IIS to handle 10k plus connections? Can I just wildly increase the...
View ArticleHow does ETag generated by IIS 7 OR IIS 8
Hi all:I'm interested in understanding how to generate the Etag by IIS。 For example, the following two values , how to understand，If I convert the value （c7bcbcf940ca1）to the time， I can't get the...
View ArticleWCF Service Troubleshooting
I have a WCF 4 web service running on IIS 7.5.7600.16385 (Windows Server 2008 R2).Most of the time it is running fine with 1-10 concurrent requests running (via worker processes view). The requests...
View ArticleVery Slow outside Network
We have 5 appliaction hosted in IIS 7.0. Of these 2 application works fine within our network, but its not working outside our network, we have tried all options but its not working any solutions...
View ArticleIIS Site taking long time to show
I have a website which is hosted on our internal server.We are usingServer 2008 R2 64bits SQL server 2008 When I tried to access the site it take 5 minutes but was timeout and in IE it was not save...
View Articlewebpage request through IP takes too long
Hi,I have web form application running on IIS 7.5 and windows 2008 r2. When I request a page through localhost address. It works fine. But through IP address of server, loading one page takes more than...
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