RP/TUX 6.5, TUX 6.51 - OpenVMS running / WS clients experience 0.2 second delay with tpacall 50% of the time (Doc ID 771231.1)

Last updated on FEBRUARY 14, 2017

Applies to:

Oracle Tuxedo / Tuxedo / 6.5, 6.51
Information in this document applies to any platform

Goal

TUX 6.5, OpenVMS, RP328
The customer reports that they are seeing 50% of tpacall/tpgetrply service requests take 1/5 second.  Using the  test
program, after setting the threshold to 0.17 seconds, the problem can be seen:

5       3       0.189441        0.000976        0.188465        0.189441  1
r       4       0.010741        0.000976        0.009765        0.010741  0
5       5       0.189444        0.000977        0.188467        0.189444  1
r       6       0.010742        0.000977        0.009765        0.010742  0
r       7       0.189441        0.000976        0.188465        0.189441  1
r       8       0.010741        0.000976        0.009765        0.010741  0
r       9       0.189441        0.000977        0.188464        0.189441  1
r       10      0.010742        0.000977        0.009765        0.010742  0
r       11      0.189441        0.000976        0.188465        0.189441  1

Every other request takes a bit less than 200 milliseconds. 

If this is run longer, the total number of delayed messages comes out to about 47%

Solution

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