Anybody know a way I can automatically assign CPU affinity?

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11-10-2007, 04:06 PM
Evilseed

Anybody know a way I can automatically assign CPU affinity?

Hey there,

I think I might swap out my dual core cpu for a quad core CPU, then assign 5x WoW's to their own CPU (minus 1 to double).

Does anybody know of a way to make an EXE (eg. wow.exe) automatically start under a certain CPU affinity?

Then I could just make 5 copies of wow.exe and assign them all a CPU Affinity up front.

Thanks!
11-10-2007, 05:29 PM
Xzin

There should be a command line option to do that.
11-11-2007, 07:13 PM
Stealthy

Re: Anybody know a way I can automatically assign CPU affini

Quote:

Originally Posted by Evilseed

Hey there,

I think I might swap out my dual core cpu for a quad core CPU, then assign 5x WoW's to their own CPU (minus 1 to double).

Does anybody know of a way to make an EXE (eg. wow.exe) automatically start under a certain CPU affinity?

Then I could just make 5 copies of wow.exe and assign them all a CPU Affinity up front.

Thanks!

Be careful when playing around with processor affinities and WoW - u can actually make the game slower. Note - WoW only supports dual core natively....
11-11-2007, 08:01 PM
jdraughn

There is an utility called process.exe which can assign affinitys. I have found that the best way of assigning affinitys is to just give all 5 games all 4 cpus and let the OS automatically split it up. If you give each instance of the game their own CPU, then there are times when 1 instance could use more CPU, and some instances have CPU to spare.
11-12-2007, 04:42 AM
Otlecs

If you use Vista, you can use the "start /affinity" construct in a command (batch) file:

[code:1]wow1.cmd:
start /affinity 1 c:\games\world of warcraft drone 1\wow.exe[/code:1]

etc.

I'm not sure how you do that under XP, but (with the Pro edition at least) you can set the affinity of an already executing process from the task manager.
11-12-2007, 07:49 PM
keyclone

btw, if you didn't know... v1.7r of keyclone allows for automatic assigning of cpu affinity.

check the command editor
11-12-2007, 11:12 PM
panker

After hours (erm, minutes) of struggling with the start /affinity cmd thingy, I couldn't get it to work with wow.exe. Always ended up with two CPUs. It did work with notepad, however, so I figured it might have something to do with wow config files. I took a look at WTF/Config.WTF and found this:

SET processAffinityMask "3"

Figuring it's a hex value, I changed it to "F" and whaddya know, all 4 CPUs active on start :p (Edit: After some further testing, I noticed the value is actually decimal, so replace the F with 15. If I sticked any text in there, it used all four CPUs so I got tricked since I didn't do any testing besides "F" :p)

If you can't find the command in your config file, I don't think adding it would hurt :p
(Edit2: blergh, read this before you do http://forums.worldofwarcraft.com/th...78017311&sid=1 (so you'll have someone else to blame when your pc explodes!))