in reply to Re: Multithreaded process on AIX slow
in thread Multithreaded process on AIX slow

On, yes.
  • Comment on Re^2: Multithreaded process on AIX slow

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Re^3: Multithreaded process on AIX slow
by kschwab (Vicar) on Nov 14, 2013 at 00:04 UTC
    If it's easy to test, try setting these environment variables before you kick it off:
    export AIXTHREAD_SCOPE=S export SPINLOOPTIME=500 export YIELDLOOPTIME=100 export MALLOCMULTIHEAP=1
    These are what are recommended for websphere (a java app server), which is, at a high level, doing something similar. All mostly targeted at reducing contention for deadlocks, mutex, etc.

      Hi - I did reply to that y'day but it didn't get posted for some reason.

      Thanks for the suggestions there. I'll look see if there are any appropriate ENV vars that influence things too. Appr.

      Kind regards

      Derek

      Well, I tried setting the env vars and rerunning with no difference. So, I guess I'll look inside the modules next.

      Kind regards

      Derek