Re^3: Multithreaded process on AIX slow

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
[download]

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.

Comment on Re^3: Multithreaded process on AIX slow Download Code

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Re^4: Multithreaded process on AIX slow by scunacc (Acolyte) on Nov 14, 2013 at 16:15 UTC
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	[reply]
Re^4: Multithreaded process on AIX slow by scunacc (Acolyte) on Nov 15, 2013 at 03:14 UTC
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	[reply]