RP/TUX 8.0/TUX 8.1 - poor performance under heavy load (Doc ID 777220.1)

Last updated on NOVEMBER 04, 2016

Applies to:

Oracle Tuxedo / Tuxedo / 8.0,8.1
Information in this document applies to any platform

Goal

DESCRIPTION:
Under heavy load, a SHM application running on a multi-CPU host experiences heavy contention for the bulletin board
lock.  tmadmin bbi shows
  Average queue length: 10.06

When truss -u "libtux::*" -p <pid> is used to trace the behavior of one of the heavily-loaded Tux
application servers, it shows that the process is updating its service cache before every tpcall() invocation.  These
cache updates appear to be unnecessary.

CONFIGURATION:
Tuxedo 8.0
Tuxedo 8.1

Solution

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