run compare on perf cores

[rluvaton]

this should fix the issue with taskset in the compare CLI:

• Hetzner Benchmarking Machine Replacements build#3657 (comment)
• benchmark: conditionally use spawn with taskset for CPU pinning node#52253

not configurable to avoid command injection possibility

After merging this, should revert the pr:

• benchmark: conditionally use spawn with taskset for CPU pinning node#52253

[anonrig]

This would fail on non-linux environments I assume? Can we make it work with Windows and macOS as well?

[rluvaton]

as @richardlau is not runnable outside the build infra

[richardlau]

not configurable to avoid command injection possibility

FWIW the script is currently specific to the Build infra as it uses the select-compiler.sh script, so hard coding the taskset parameter (for now) is reasonable. I'll leave it up to the performance team if they want this script to be runnable outside of the CI.

[rluvaton]

maybe we can close this if we merge

• benchmark: add ipc support to benchmark spawn stdio config node#52456

[mcollina]

lgtm

we are not running these in anything but linux