Tempdb drive is slow in Azure SQLVM

  • Hi,

    We have migrated from Onprem to Azure SQLVM. I've configured SQL server as per Microsoft guidelines for tempdb and other SQL VM settings as mentioned in below link.

    https://docs.microsoft.com/en-us/azure/azure-sql/virtual-machines/windows/performance-guidelines-best-practices-checklist

    When our ETL processes are running, there were disk latency errors for tempdb drive (default D:\). I thought, D drive being local SSD is supposed to be faster of all the drives.

    Can any one help, is there a setting/configuration I missed that is causing latency. If not in D drive, is there a better way setup tempdb to reduce latency.

    SQL Server has encountered 14 occurrence(s) of I/O requests taking longer than 15 seconds to complete on file [D:\tempDb\data\temp1.mdf] in database id 2. The OS file handle is 0x0000000000000CD4. The offset of the latest long I/O is: 0x000001f3a00000

    A time-out occurred while waiting for buffer latch -- type 3, bp 00000201ADE3D500, page 7:1027176, stat 0x10b, database id: 2, allocation unit Id: 6488064, task 0x000001FF89B2C108 : 2, waittime 300 seconds, flags 0x19, owning task 0x000001FEA07ED088. Not continuing to wait.

    BobMgr::GetBuf: Sort Big Output Buffer write not complete after 300 seconds.

    • This topic was modified 3 years, 1 month ago by  cooldude001.
  • If it's on the D-drive of the azure vm and 15 seconds timeout reached, I would open a case with Azure support !

     

    Johan

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