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High CPU w3wp.exe *32 to blame

    Question

  • We are having an issue on all of our web servers where the CPU spikes to 100% and does not come back down until the w3wp.exe *32 process is restarted. From what I've read else where this process is related to IIS and a worker process that closes out old tasks. At any give time there are 4 of the same w3wp.exe *32 processes and they are all using about 200,000 k each. I have collected a few diag dump logs and will send them in a private message if that would help. I've searched everywhere and cannot determine what is causing the issue any help would be greatly appreciated.
    Tuesday, March 26, 2013 1:37 PM

All replies

  • Seems some of the Application Pools in your IIS is causing this. you need to identify which application pool is associated with a particular w3wp.exe process,  Once you have confirmed that a w3wp.exe process is experiencing high CPU, you will need to collect two pieces of information in order to determine what is causing the problem.

    • A Performance Monitor data collector set.
    • A user-mode memory dump of the w3wp.exe process.

    Please go through the following article for detailed analysis of this IIS application pool issue.

    http://www.iis.net/learn/troubleshoot/performance-issues/troubleshooting-high-cpu-in-an-iis-7x-application-pool


    Regards, Prakash Nimmala Skype : Prakash.Nimmala Email ID : prakash.nimmala@hotmail.com Whenever you see a helpful reply, click on Vote As Helpful & click on Mark As Answer if a post answers your question.

    Tuesday, March 26, 2013 3:21 PM
  • I followed the steps above and have analyzed the logs. I could only output about 10 pages. If I need to post more let me know.

    https://dl.dropbox.com/u/22479941/HighCPU.docx

    I'm replying from a different account because I cannot figure out how to verify the other account.

    Thursday, March 28, 2013 2:09 PM