Skip to Content
avatar image
Former Member

network/roll wait time is high

Hi,

One of my dialog instance is showing high response time at SMLG.

When i am checking Dialog Overview at RZ20, network response time of this server is very high.

When i am checking the parts of response time at ST03, roll wait time is always around 70% for this instance.

(4.7,2003 server, SQL 2000)

Kindly suggest me to resolve this.

Regards,

Gayathry.

Add comment
10|10000 characters needed characters exceeded

  • Get RSS Feed

3 Answers

  • Best Answer
    avatar image
    Former Member
    Apr 23, 2009 at 04:08 PM

    Hello

    one of the main reazons for having high roll wait time is that the dialog work processes are all busy

    to check this out you can go to sm50 (or sm51 and select the server) and have a look at peak times

    if there are enough free dialog work processes.

    in the same tx, you can also check cpu times of dialog work proceses, if all of them have high cpu times

    it means that you have a bottleneck there

    Regards

    Geert

    Add comment
    10|10000 characters needed characters exceeded

  • avatar image
    Former Member
    Mar 12, 2009 at 12:43 PM

    Hai,

    Roll wait time means: During processing of some dialog steps, the user context may be rolled out; for example, during RFCs when the client is waiting for a response from the server. This wait time until the dialog step can continue is called the roll wait time.

    try to check what RFC causes this, somtimes this may lead to rollfile overflow and in turn some background jobs might fail due to rollfile overflow.

    Check SAP Notes:1100926 and 578118.

    Regards,

    Yoganand.V

    Edited by: Yoganand Vedagiri on Mar 12, 2009 1:47 PM

    Add comment
    10|10000 characters needed characters exceeded

  • avatar image
    Former Member
    Mar 19, 2009 at 03:09 PM

    Hi gayatry

    Roll wait time is the time spent in roll context waiting for RFCs.

    During a synchronous RFC, the ABAP program is rolled out from the

    work process. This time can be observed as roll wait time.

    A large roll wait time is indicative for communication problem with external system or GUI.

    If this is a continuous problem , would suggest you to try re installing your GUI and see if the problem stil persists.

    Regards

    Chen

    Add comment
    10|10000 characters needed characters exceeded