ProcessAffinityMask

[DVAFP]

what does it do? I've noticed it's at 2. I've read posts that suggested changing it to 15. but after the patch its still at 2.

[322Sqn_Dusty]

According to other threads, 15 could stand for all cores. Assumed is that 14 would use all cores except the first (core 0 ). But a table of mask numbers is welcome. I wouldn't use the core in use by Windows.

[DVAFP]

but the latest patch has optimizations for multicore and its still at 2, i dont get it.

[322Sqn_Dusty]

The game doesn't read the config of your system on that matter. Openup the conf.ini to change the affinitymask and change it manually (see post in this forum).

[maclean525]

Affinity Mask works like this:

Each core is one bit of an 8 bit byte. So if you have 8 cores:
11111111

Here's how you calculate those affinity mask numbers:
128 64 32 16 8 4 2 1

So if you wanted the game to use only the first two cores you would set it to 1+2=3. If you wanted it to use all 4 cores on a quad core machine it would be 1+2+4+8=15.

From my experience with other games, hyperthreading on a quad-core is counter-productive so turn it off. In addition freeing up the first core for windows seems to reduce micro-stutters (in other games I'm talking about here like FSX)

I've found 14 to be the sweet spot for my system (using cores 2,3,4 core 1 free for windows)

[322Sqn_Dusty]

Great, indeed i'm with 14 on my q9550. Thank you for the info.

[Vengeanze]

So Affinity set to 2 is to make CoD use the second core on a dual core leaving the first core for windows?

[322Sqn_Dusty]

Yes, Core 0 (first core) is bit 1. Core 1 (second core) is bit 2 etc.

[b101uk]

As far as I am concerned “ProcessAffinityMask” dose absolutely nothing either as Luthier described it or anyone else has (without the “;”), so it works much like that other game placebo the anti epilepsy filter which either never existed or is imposable to turn off.

placebo are used in medicine for good reason because of the way the mind works which is why no end of people report getting better when taking them in clinical trials etc.

[FlushMeister]

So on a hexacore machine it's: 1+2+4+8+16+32=63 ?

Thanks

Originally Posted by maclean525

Affinity Mask works like this:

Each core is one bit of an 8 bit byte. So if you have 8 cores:
11111111

Here's how you calculate those affinity mask numbers:
128 64 32 16 8 4 2 1

So if you wanted the game to use only the first two cores you would set it to 1+2=3. If you wanted it to use all 4 cores on a quad core machine it would be 1+2+4+8=15.

From my experience with other games, hyperthreading on a quad-core is counter-productive so turn it off. In addition freeing up the first core for windows seems to reduce micro-stutters (in other games I'm talking about here like FSX)

I've found 14 to be the sweet spot for my system (using cores 2,3,4 core 1 free for windows)