Hello. On Fri, Nov 08, 2024 at 07:48:30AM GMT, Costa Shulyupin <costa.shul@xxxxxxxxxx> wrote: > Cgroups allow configuring isolated_cpus at runtime. > 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/ Even based on that this seems incomplete to me the CPUs that are part of 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? Thanks, Michal (-Cc: lizefan.x@xxxxxxxxxxxxx)
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