Hello.
On Fri, Nov 08, 2024 at 07:48:30AM GMT, Costa Shulyupin <costa.shul@xxxxxxxxxx> wrote:
Cgroups allow configuring isolated_cpus at runtime.Even based on that this seems incomplete to me the CPUs that are part of
However, blk-mq may still use managed interrupts on the
newly isolated CPUs.
Rebuild hctx->cpumask considering isolated CPUs to avoid
managed interrupts on those CPUs and reclaim non-isolated ones.
The patch is based on
isolation: Exclude dynamically isolated CPUs from housekeeping masks:
https://lore.kernel.org/lkml/20240821142312.236970-1-longman@xxxxxxxxxx/
isolcpus mask on boot time won't be excluded from this?
IOW, isolating CPUs from blk_mq_hw_ctx would only be possible via cpuset
but not "statically" throught the cmdline option, or would it?