December 2006
Intermediate to advanced
202 pages
8h 29m
English
Content preview from Linux Kernel in a NutshellBecome an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
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Name
isolcpus — Isolate CPUs from the kernel scheduler.
Synopsis
isolcpus=
cpu_number[,
cpu_number,...]
Remove the specified CPUs, as defined by the
cpu_number values, from the general
kernel SMP balancing and scheduler algroithms. The only way to move
a process onto or off an "isolated" CPU is via the CPU affinity
syscalls. cpu_number begins at 0, so the maximum value is 1 less than the
number of CPUs on the system.
This option is the preferred way to isolate CPUs. The alternative, manually setting the CPU mask of all tasks in the system, can cause problems and suboptimal load balancer performance.
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