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Exchange 2010 SP1 32GB - 238MB free?

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  • Exchange 2010 SP1 32GB - 238MB free?

    Should I be worried about 98% memory usage on our exchange 2010 box? Or is this just the way it's staging/caching all available physical memory?


  • #2
    Re: Exchange 2010 SP1 32GB - 238MB free?

    Standard behaviour - the information store will grab almost all available RAM, but will give it up gracefully on demand from other processes
    Tom Jones
    MCT, MCSE (2000:Security & 2003), MCSA:Security & Messaging, MCDBA, MCDST, MCITP(EA, EMA, SA, EDA, ES, CS), MCTS, MCP, Sec+
    PhD, MSc, FIAP, MIITT
    IT Trainer / Consultant
    Ossian Ltd
    Scotland

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    • #3
      Re: Exchange 2010 SP1 32GB - 238MB free?

      Originally posted by Ossian View Post
      Standard behaviour - the information store will grab almost all available RAM, but will give it up gracefully on demand from other processes
      Thanks for the quick and informative response.

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      • #4
        Re: Exchange 2010 SP1 32GB - 238MB free?

        that's a hefty box.
        24 cores ? are you using 6-core CPUs or somethin ?
        I can't think of any other way.. ?
        Please do show your appreciation to those who assist you by leaving Rep Point https://www.petri.com/forums/core/im.../icon_beer.gif

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        • #5
          Re: Exchange 2010 SP1 32GB - 238MB free?

          I was just thinking that...
          Damn fine windmill

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          • #6
            Re: Exchange 2010 SP1 32GB - 238MB free?

            Originally posted by tehcamel View Post
            that's a hefty box.
            24 cores ? are you using 6-core CPUs or somethin ?
            I can't think of any other way.. ?
            Might be with enabled Hyperhtreading, most people simply forget to disable it ignoring the advise given by Microsoft.

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            • #7
              Re: Exchange 2010 SP1 32GB - 238MB free?

              Originally posted by FischFra View Post
              Might be with enabled Hyperhtreading, most people simply forget to disable it ignoring the advise given by Microsoft.
              The recommendation to disable hyperthreading depends on the type of processing the server does. I've never head that recommendation for Exchange.
              Regards,
              Jeremy

              Network Consultant/Engineer
              Baltimore - Washington area and beyond
              www.gma-cpa.com

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              • #8
                Re: Exchange 2010 SP1 32GB - 238MB free?

                Originally posted by JeremyW View Post
                The recommendation to disable hyperthreading depends on the type of processing the server does. I've never head that recommendation for Exchange.
                "Hyperthreading causes capacity planning and monitoring challenges, and as a result, the expected gain in CPU overhead is likely not justified. Hyperthreading should be disabled by default for production Exchange servers and only enabled if absolutely necessary as a temporary measure to increase CPU capacity until additional hardware can be obtained."

                From: http://technet.microsoft.com/en-us/l.../dd346699.aspx

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                • #9
                  Re: Exchange 2010 SP1 32GB - 238MB free?

                  open mouth, insert foot

                  I actually do remember reading that now.
                  What I don't get is the reason they're saying to disable hyperthreading. It's not because it doesn't increase performance (because they say it does), it's because it presents challenges monitoring and capacity planning. Why not face those challenges and get more performance out of your machine?
                  Sorry this is
                  Regards,
                  Jeremy

                  Network Consultant/Engineer
                  Baltimore - Washington area and beyond
                  www.gma-cpa.com

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