linux cpuset

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Linux provides cpusets, which allow CPUs to be grouped and processes assigned to them. This can improve performance similarly to process binding, but performance can be improved further by making the cpuset exclusive—preventing other processes from using it. The trade-off is a reduction in available CPU for the rest of the system.

The following commented example creates an exclusive set:

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# mkdir /dev/cpuset
# mount -t cpuset cpuset /dev/cpuset
# cd /dev/cpuset
# mkdir prodset             # create a cpuset called "prodset"
# cd prodset
# echo 7-10 > cpus          # assign CPUs 7-10
# echo 1 > cpu_exclusive    # make prodset exclusive
# echo 1159 > tasks         # assign PID 1159 to prodset

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