November, 2005

  • Slava Oks's WebLog

    Q and A: Clock Hands - what are they for?

    Q1 I read in your blog about the new algorithm with two clock hands to control memory consumption, but I really would like to understand exactly what the hands are doing and if they relate to the lazywriter. A1. In SQL Server 2005 we have separated...
  • Slava Oks's WebLog

    Q and A: Virtual Address Space, VAS, reservation - why bother?

    Seems like today is a question day :-). I will attempt to answer several questions about VAS I got today: Q1. There is one aspect of Virtual Memory that is just not clear yet. I think I understand about VAS, but maybe not as much as I could, but I...
  • Slava Oks's WebLog

    Q and A: x64 & AWE mechanism

    Today I received following question: Hello, We will be running Windows Server 2003 x64 with SQL Server 2005 x64. I would think AWE would not come into the picture in this scenario. I'm trying to find out more about SQL Server 2005 memory management...
  • Slava Oks's WebLog

    Be aware: To Hyper or not to Hyper

    Our customers observed very interesting behavior on high end Hyperthreading (HT) enabled hardware. They noticed that in some cases when high load is applied SQL Server CPU usage increases significantly but SQL Server performance degrades. Occasionally...
  • Slava Oks's WebLog

    Final changes in SQL Server 2005's memory manager

    As you would expect in the last several months SQL 2005 went through rigorous testing. During the period we have identified and put several improvements that you might be interested to hear about. Memory Broker Analyzing SQL Server's behavior...
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