Error message:IO Completion Listener

  • Can you please provide the version, edition and bitness of your OS and SQL Server instance?

    And the results of these queries:

    -- memory overview

    SELECT CAST(physical_memory_in_bytes / (1024.0 * 1024.0 * 1024.0) AS DECIMAL(20, 2)) AS PhysicalMemoryGB,

    CAST(virtual_memory_in_bytes / (1024.0 * 1024 * 1024) AS DECIMAL(20, 2)) AS VasGB,

    CAST((bpool_committed * 8) / (1024.0 * 1024.0) AS DECIMAL(20, 2)) AS BufferPoolCommittedMemoryGB,

    CAST((bpool_commit_target * 8) / (1024.0 * 1024.0) AS DECIMAL(20, 2)) AS BufferPoolTargetMemoryGB,

    (

    SELECT CAST(CAST(value_in_use AS INT) / 1024.0 AS DECIMAL(20, 2))

    FROM sys.configurations

    WHERE name = 'min server memory (MB)'

    ) AS MinServerMemoryGB,

    (

    SELECT CAST(CAST(value_in_use AS INT) / 1024.0 AS DECIMAL(20, 2))

    FROM sys.configurations

    WHERE name = 'max server memory (MB)'

    ) AS MaxServerMemoryGB,

    (

    SELECT value_in_use

    FROM sys.configurations

    WHERE name = 'awe enabled'

    ) AS IsAweEnabled

    FROM sys.dm_os_sys_info;

    -- cpu overview

    SELECT osi.cpu_count AS LogicalCpuCount,

    osi.hyperthread_ratio AS HyperthreadCoreRatio,

    osi.cpu_count / osi.hyperthread_ratio AS PhysicalCpuCount,

    (

    SELECT COUNT(*)

    FROM sys.dm_os_schedulers

    WHERE scheduler_id < osi.cpu_count

    AND is_online = 1

    ) AS LogicalCpuOnline

    FROM sys.dm_os_sys_info osi;

    There are no special teachers of virtue, because virtue is taught by the whole community.
    --Plato

  • PhysicalMemoryGBVasGBBufferPoolCommittedMemoryGB BufferPoolTargetMemoryGB

    5.99 8192.00 2.21 3.79

    MinServerMemoryGBMaxServerMemoryGBIsAweEnabled

    0.00 2097152.00 0

    LogicalCpuCountHyperthreadCoreRatioPhysicalCpuCountLogicalCpuOnline

    16 8 2 16

  • Krasavita (5/1/2012)


    PhysicalMemoryGBVasGBBufferPoolCommittedMemoryGB BufferPoolTargetMemoryGB

    5.99 8192.00 2.21 3.79

    MinServerMemoryGBMaxServerMemoryGB IsAweEnabled

    0.00 2097152.00 0

    LogicalCpuCountHyperthreadCoreRatioPhysicalCpuCountLogicalCpuOnline

    16 8 2 16

    Most likely issue is bolded above. You need to set max memory immediately. It does not require a restart and takes effect immediately. Some guidance: Suggested Max Memory Settings for SQL Server 2005/2008[/url]

    There are no special teachers of virtue, because virtue is taught by the whole community.
    --Plato

  • Thank you very much, I will changed it,what is your recomendations is 1500 enough?

  • With 6GB of RAM in your machine 1500MB would be very conservative. 1500MB may make sense for you though, it depends on what else you have running on your server as to how much memory to allocate to the buffer pool (max memory setting only restricts the buffer pool). You need to leave some memory for other programs (including SQL Server non-buffer pool activities) and the OS itself to do work. Have a look at Glenn's article, it's a good start.

    There are no special teachers of virtue, because virtue is taught by the whole community.
    --Plato

  • sorry it is 15000 not 1500

  • If you have 6GB RAM then how would setting max memory to 15000MB help you restrict the SQL Server from growing the buffer pool to the point where it affected server performance? The article...read the article 😀

    There are no special teachers of virtue, because virtue is taught by the whole community.
    --Plato

  • I think I'd set max memory to say 4096MB. That would leave about 2GB for the OS.

  • Thank you

  • Thank you everyone, but article recomends 6GB set to 4800, how did you come up with that number 4096 and plus 2 gb.

    Thank you

  • Krasavita (5/2/2012)


    Thank you everyone, but article recomends 6GB set to 4800, how did you come up with that number 4096 and plus 2 gb.

    Thank you

    Simple math. Start with 1GB or 1024MB, multiple by 4, gives you 4096MB (4GB), which if you subtract that from 6GB leaves 2GB.

  • Thank you

  • I have another question, how would I know that I need to add more Ram?

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