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Work Process


How can I found out if I need to add more dialog WP and Background WP?

For Background WP, is the delay column in SM37 give you indication?



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    author's profile photo Former Member
    Former Member
    Posted on Jun 16, 2008 at 10:03 AM

    Hi Eida,

    There is a simple way of calculating for default/intial startup value of dia and background


    Number of Dia wp = 4* No. of CPUs(physical) present

    Btc wp= 2* No. of CPUs

    That means if there are 4 the Dia wp= 20, Batch wp= 8, rdisp/wp_no_vb =5 ,

    rdisp/wp_no_vb2= 2, rdisp/wp_no_spo=1.

    One more thing you can do to resize the above values is:

    Check ST03N transaction and see wether the Wait time for Dialog and Batch Process is high. It means if its contributing more than 40% of the total response time then we could

    think about increasing the number of Workprocess.

    It all depends on how the system behave generally and wether the endusers are complaining about it.

    Hope you could work it out!!

    Please provide your input!!

    Thank you,


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    • Former Member Former Member

      1 dialog work process should ideally have little access is a fair assumption. Of course there may be times when all WP's are filled for very short periods of time but this should not cause long wait times to show in STAD/ST03.... Long wait times are also an indication of a performance problem so you need to identify performance issues before upping the number of WP's.

      Performance is unfortunately sometimes a little complex and it is easy to assume symptoms are causes

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