• Arsh - Monday, August 14, 2017 9:05 AM

     I mean is there any guideline which suggests certain threshold should be considered as not normal and looked-into ?

    No. Because what's normal for your server may indicate a severe problem on mine.

    For the CXPACKETS , parallelism reduction is also under consideration for some SPs

    Excessive parallelism is usually due to inefficient queries or poor indexing. Focus on that first. Especially since a common cause of PageIOLatch waits is inefficient queries that access too much data and hence churn the buffer pool.

    Gail Shaw
    Microsoft Certified Master: SQL Server, MVP, M.Sc (Comp Sci)
    SQL In The Wild: Discussions on DB performance with occasional diversions into recoverability

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