Dedicating a single core to a single app?

deadlylife · 2009-07-25 23:01:45

Hello, I'm in the process of installing HL2 and would like to know if I can assign HL2 and Wine to a single core (my second) and run everything else on the first?

fukawi2 · 2009-07-26 03:40:47

Yes you can... Google for "CPU Affinity" or "Processor Affinity" or something similar. (Sorry, I can't remember how to off the top of my head)

doorknob60 · 2009-07-26 06:08:37

taskset -c 1 command

Replace 1 with which core you want, starting at 0, so 1 is infact your second core.

djszapi · 2009-07-26 06:54:27

Yeah but read these pages too

http://en.wikipedia.org/wiki/Processor_affinity
http://www.tomshardware.co.uk/forum/pag … _10_0.html

B-Con · 2009-07-26 07:08:27

doorknob60 wrote:

taskset -c 1 command
Replace 1 with which core you want, starting at 0, so 1 is infact your second core.

If I understand the man page correctly, taskset only limits the process to that core, but it doesn't *reserve* that core for that process.

I think the OP wants to guarantee that his process has an entire core to itself. Taskset only looks (to me) like it limits the process to the core, but does not limit the core to the process.

If the above is true, would setting the niceness at -20 effectively give the process dominance on the core it's on? Ie:

taskset -c 1 command & pid=$!
renice -20 $pid

brebs · 2009-07-26 07:49:44

I do this with Thief 2 in Wine, which is unstable if it runs on more than one core:

taskset -c 1 /usr/bin/wine thief2

fukawi2 · 2009-07-26 08:57:12

B-Con wrote:

I think the OP wants to guarantee that his process has an entire core to itself. Taskset only looks (to me) like it limits the process to the core, but does not limit the core to the process.

AFAIK, the only way to do this would be to set all *other* processes to only use 1 core, thereby leaving one core free for the other process.

Arch Linux

#1 2009-07-25 23:01:45

Dedicating a single core to a single app?

#2 2009-07-26 03:40:47

Re: Dedicating a single core to a single app?

#3 2009-07-26 06:08:37

Re: Dedicating a single core to a single app?

#4 2009-07-26 06:54:27

Re: Dedicating a single core to a single app?

#5 2009-07-26 07:08:27

Re: Dedicating a single core to a single app?

#6 2009-07-26 07:49:44

Re: Dedicating a single core to a single app?

#7 2009-07-26 08:57:12

Re: Dedicating a single core to a single app?

Board footer