“execvp: no such file or directory” when attempting taskset on a running process

Question

I have a process, PID 7150.

I want to assign the process to core #4 of my system. (Core numbering starts with zero, so the fourth core should be core #3)

I know I can do this by using Taskset. However, whenever I try, I get the following:

steve@rosie:~$ taskset -p 7150
pid 7150's current affinity mask: f
steve@rosie:~$ taskset -c 3 -p 7150
execvp: No such file or directory
failed to execute -p

What am I doing wrong?

Answer 1

The proper format for the command is:

taskset -pc 3 7150