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Thread: Memory configuration recommendation

  1. #1
    Join Date
    Dec 2002
    Posts
    50

    Memory configuration recommendation

    Greetings -

    I am managing a server which runs one large database, over 130 GB, I am getting a lot of IO wait time related to templog and data files wait time. The tempdb size is set to 9.75 MB. We are also getting buffer related errors. The vendor blames on not having the meomry size set correctly on the server. The current mem size is set to defualt (min:0 - Max: 2147483647 MB). Do you have any recommendation to how we need to setup the memory? Please advise.

    Thanks,
    Lava

  2. #2
    Join Date
    Nov 2002
    Location
    New Jersey, USA
    Posts
    3,912
    Your tempdb size may be too small, probably it is expanding dynamically causing IO waits. You should experiment to bigger tempdb.

  3. #3
    Join Date
    Dec 2002
    Posts
    50
    Hello skhanal -

    I did some research as well and found that the mem max size needs to be adjusted based on your physical RAM. The server has 12 GM RAM, it is recommended to set the max size to 10000 MB. What is your recommendation? Can you please provide me your input?

    Thanks,
    Lava

  4. #4
    Join Date
    Sep 2002
    Posts
    5,938
    Is it 32 or 64-bit machine? Is it dedicated sql server?

  5. #5
    Join Date
    Dec 2002
    Posts
    50
    It is 64 bit dedicated machine

  6. #6
    Join Date
    Dec 2002
    Posts
    50
    I went ahead and changed the max size to 10GB, however memoory free space still below 1 GB. I used perfmon to monitor the sever, and SQL appears to be using a lot of memory. Should I resize it to 8GB?? What you think?

  7. #7
    Join Date
    Sep 2002
    Posts
    5,938
    Leave it at 10gb, 1gb free memory for OS is not that bad on dedicated sql server.

  8. #8
    Join Date
    Dec 2002
    Posts
    50
    Quote Originally Posted by rmiao View Post
    Leave it at 10gb, 1gb free memory for OS is not that bad on dedicated sql server.
    Thank you! Will do.

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