Task Manager 'I/0 Write Bytes' for sqlserver.exe

  • With two quad processors and 8 GB memory and a light SQL load would you expect to see 401,412,031,545 'I/0 Writes Bytes' in Task manager from sqlservr.exe? I'm also seeing a PF Usage of 7.88 GB and a very high Page IO Latch. It looks to me as SQL Server is starving for memory. How do I determine if this is SQL Server of some other process? there is a process with a PF Delta with a very high burst from every second or so, klnagent.exe. There are complaints at the Kaspersky Labs forum of the same symptoms. Does anyone have a strategy for isolating the offending process without killing processes or restarting the server?

  • Task Manager's I/O number could be misleading without knowing how long the server has been running. What are the specs of SQL Server? Min/Max memory settings. What are the database sizes on the server? Just an I/O number doesn't give much to go on.

    As for klnagent.exe, you might want to check your virus scan settings. If you have real-time scans on the database files, you could be begging for performance problems.

    I suggest you look at running process explorer instead of Task Manager. You can get a great deal of information that Task Manager just doesn't have.

    Download it from microsoft here:

    http://download.sysinternals.com/Files/ProcessExplorer.zip

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