Intrusion Detection as one cause for latency when browsing to a SharePoint site

  Problem Details / Symptoms I have been troubleshooting a SharePoint performance problem in which clients were wait over 75 seconds to get and render an InfoPath browser form of a SharePoint site.    Interestingly, usually the first GET tended to take the longest.  And that’s not because the w3wp.exe process hadn’t already been spawned on the server and not because…


One reason for slow performance in SharePoint (authPersistNonNTLM)

  When discussing possible causes for sluggish performance in SharePoint farms, there is one provocative KB article that has helped many people out:  954873   – You may experience slow performance when you use Integrated Windows authentication together with the Kerberos authentication protocol in IIS 7.0http://support.microsoft.com/kb/954873/EN-US The idea there, in short, is that when an IIS setting named AuthPersistNonNTLM is…


"Page cannot be displayed" due to Non-Paged Pooled Memory Depletion

     Overview   It’s not unnatural to assume an IIS process hang when web client browsers begin reporting either “Page cannot be displayed . . . cannot find server or dns error” (IE6) or “Internet Explorer cannot display the webpage. . .”  (IE7).  But when an IISRESET proves insufficient to provide temporary relief, it…

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