CXPACKET wait on SQL Server












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Recently I am experiencing performance issue on a SQL Server database and I have two queries that show me the wait as shown below, one of the databases on this server is a member of Always On replica, but the load is on the other database.



The first query is my own query which collects the waits stat during 10 seconds and calculates the difference and the second list if from Pauls's query:
https://www.sqlskills.com/blogs/paul/wait-statistics-or-please-tell-me-where-it-hurts/



Regarding the differences, I'm wondering should I have to ignore CXPACKET and Redo_Thred_Pending_Work wait and work on the root cause of PageIOLatch_SH wait (maybe poor indexing).
MAXDOP value is 0 and the server has 36 cores, any thoughts?



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    Recently I am experiencing performance issue on a SQL Server database and I have two queries that show me the wait as shown below, one of the databases on this server is a member of Always On replica, but the load is on the other database.



    The first query is my own query which collects the waits stat during 10 seconds and calculates the difference and the second list if from Pauls's query:
    https://www.sqlskills.com/blogs/paul/wait-statistics-or-please-tell-me-where-it-hurts/



    Regarding the differences, I'm wondering should I have to ignore CXPACKET and Redo_Thred_Pending_Work wait and work on the root cause of PageIOLatch_SH wait (maybe poor indexing).
    MAXDOP value is 0 and the server has 36 cores, any thoughts?



    enter image description here









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      Recently I am experiencing performance issue on a SQL Server database and I have two queries that show me the wait as shown below, one of the databases on this server is a member of Always On replica, but the load is on the other database.



      The first query is my own query which collects the waits stat during 10 seconds and calculates the difference and the second list if from Pauls's query:
      https://www.sqlskills.com/blogs/paul/wait-statistics-or-please-tell-me-where-it-hurts/



      Regarding the differences, I'm wondering should I have to ignore CXPACKET and Redo_Thred_Pending_Work wait and work on the root cause of PageIOLatch_SH wait (maybe poor indexing).
      MAXDOP value is 0 and the server has 36 cores, any thoughts?



      enter image description here









      share














      Recently I am experiencing performance issue on a SQL Server database and I have two queries that show me the wait as shown below, one of the databases on this server is a member of Always On replica, but the load is on the other database.



      The first query is my own query which collects the waits stat during 10 seconds and calculates the difference and the second list if from Pauls's query:
      https://www.sqlskills.com/blogs/paul/wait-statistics-or-please-tell-me-where-it-hurts/



      Regarding the differences, I'm wondering should I have to ignore CXPACKET and Redo_Thred_Pending_Work wait and work on the root cause of PageIOLatch_SH wait (maybe poor indexing).
      MAXDOP value is 0 and the server has 36 cores, any thoughts?



      enter image description here







      sql-server performance-tuning wait-types





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      asked 1 min ago









      SaberSaber

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