cpu_time, reads, writes columns in sys.dm_exec_requests

  • Hi,

    I've been logging the active processes history for some time and found that values for cpu_time, reads and writes sometimes go down for the same process. I thought they were cumulative and would always go up. I've got an example below. It is the same process for sure: the same session_id, login_time and connection_id.

    Any ideas?

    Thanks.

    ReportDatecpu_timesession_idlogin_timeconnection_id

    15/04/2010 10:1115755/04/2010 15:423A8FF44D-3ADE-4BB4-BE28-FA24D98E29AD

    15/04/2010 8:3015755/04/2010 15:423A8FF44D-3ADE-4BB4-BE28-FA24D98E29AD

    15/04/2010 8:120755/04/2010 15:423A8FF44D-3ADE-4BB4-BE28-FA24D98E29AD

    15/04/2010 7:3116755/04/2010 15:423A8FF44D-3ADE-4BB4-BE28-FA24D98E29AD

    15/04/2010 6:3316755/04/2010 15:423A8FF44D-3ADE-4BB4-BE28-FA24D98E29AD

    15/04/2010 5:5415755/04/2010 15:423A8FF44D-3ADE-4BB4-BE28-FA24D98E29AD

    15/04/2010 5:3416755/04/2010 15:423A8FF44D-3ADE-4BB4-BE28-FA24D98E29AD

    15/04/2010 4:5416755/04/2010 15:423A8FF44D-3ADE-4BB4-BE28-FA24D98E29AD

    15/04/2010 4:340755/04/2010 15:423A8FF44D-3ADE-4BB4-BE28-FA24D98E29AD

    15/04/2010 2:510755/04/2010 15:423A8FF44D-3ADE-4BB4-BE28-FA24D98E29AD

    15/04/2010 2:3416755/04/2010 15:423A8FF44D-3ADE-4BB4-BE28-FA24D98E29AD

    15/04/2010 1:3515755/04/2010 15:423A8FF44D-3ADE-4BB4-BE28-FA24D98E29AD

    14/04/2010 21:5016755/04/2010 15:423A8FF44D-3ADE-4BB4-BE28-FA24D98E29AD

    14/04/2010 21:3316755/04/2010 15:423A8FF44D-3ADE-4BB4-BE28-FA24D98E29AD

    14/04/2010 17:260755/04/2010 15:423A8FF44D-3ADE-4BB4-BE28-FA24D98E29AD

  • Notice that the time stamp is different for each request. Each of these requests is a new request from the same connection. The CPU would be specific to that particular request and not cumulative.

    Jason...AKA CirqueDeSQLeil
    _______________________________________________
    I have given a name to my pain...MCM SQL Server, MVP
    SQL RNNR
    Posting Performance Based Questions - Gail Shaw[/url]
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