Pretty straightforward question - is there a way to set the CPU affinity via PHP? Any of the following will do:
The only option I've found so far is the last one, using a tool named schedutils, and it seems it may only be supported on more recent kernels.
Schedutils
The way to set the CPU affinity is with the sched_setaffinity
C function. It's not available through the standard PHP API so you probably would have to write an extension.
An alternative is running taskset
program through system
. For example this binds the PHP process to cores 0 and 1:
system('taskset -cp 0,1 '.getmypid());
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