[Mono-list] Q: MONO on Linux - MONO_THREADS_PER_CPU

[Ralf Haifisch]

Dear all,

i would need some clarification on MONO on Linux -  MONO_THREADS_PER_CPU .

I am involved with http://opensimulator.org , and we have a regularly
reorcuring discussion about the MONO_THREADS_PER_CPU .

I did read http://www.mono-project.com/ThreadPool_DeadLocks and it reads,
like this is an very old issue.

since 3D world can have a big span of resource usage (count of prim,
textures, scripts, avatars in a instance) and opensim itself is in steady
development, it is sometimes not easy to track down the limiting issues for
scaling.

the opensim user use MONO 1.2 , 2.0.1 (mostly, i would say), 2.2 and 2.4.  
It is sugeestet to use 2.x .

We see a little bit more stable operations and higher capacity on .Net 3.x .

--> is MONO_THREADS_PER_CPU still an issue in 2.0.1 /2.2 / 2.4  ?
--> is this likely to be fixed in a next version ?
--> is there any guidance to calculate the actual numer to set, based on
hardware and target capacity ?


any help and further information may be helpfull, as opensim attracts more
and more user - so higher loads get´s more likely.  Many user are close to
opensource and prefer Linux.

So - information from MONO archcitects and dev´s maybe helpfull, as well as
from linux admins who have expirience with that topic.


cheers,
Ralf

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