pagefile in A Sentence

    1

    Pagefile. sys reads outnumber Pagefile. sys writes by about 40 to 1,

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    2

    It does not allocate a matching page in the Pagefile at that time.

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    3

    When memory is committed, physical pages of memory are allocated and space is reserved in a Pagefile.

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    4

    If the Pagefile is not properly sized errors 801/802 will start showing up in SQL's ERRORLOG file and operations.

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    5

    As long as the server is not running other memory-hungry processes, a Pagefile size of 4GB should be plenty.

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    6

    If the Pagefile is not properly sized errors 801/802 will start showing up in SQL's ERRORLOG file and operations.

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    7

    Your Pagefile must be at least 1.5 times the amount of RAM, even if you have 1 TB of RAM.

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    8

    In looking at telemetry data from thousands of traces and focusing on Pagefile reads and writes, we find that.

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    9

    Does any know a good rule of thumb for the appropriate Pagefile size for a Windows 2003 server running SQL Server?

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    10

    Most Pagefile operations are small random reads or larger sequential writes, both of which are types of operations that SSDs handle well.

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    11

    Irrelevant of the size of the RAM, you still need a Pagefile at least 1.5 times the amount of physical RAM.

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    12

    This is true even if you have a 1 TB RAM machine, you will need 1.5 TB Pagefile on disk(sounds crazy, but is true).

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    13

    Since SQL Server already manages its own memory space, this memory space should not be considered"pageable", and not included in a calculation for Pagefile size.

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    14

    The optimal Pagefile size to use with SQL Server came up, and Microsoft's recommendation is that it be 1 1/2 times the amount of RAM.

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    15

    The Windows OS keeps track of memory pressures between application processes and its own disk cache mechanism and decides when it should bump non-locked memory pages from physical to the Pagefile.

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    16

    When a committed memory page is actually written to, that is when the virtual memory system will allocate a physical memory page and possibly bump another memory page from physical RAM to the Pagefile.

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    17

    And given the fact that SQL uses a Dynamic Memory Management policy that reserves upfront as much buffer pool as possible(reserves and commits in terms of VAS), SQL Server will request at start up a huge reservation of space in the Pagefile.

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    18

    For servers running SQL Server(generally with very large amounts of RAM), the majority of the physical RAM is committed to the SQL Server process and should be(if configured correctly) locked in physical memory, preventing it from being paged out to the Pagefile.

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