On 08/09/2025 18:02, Daniel Wagner wrote: > On Mon, Sep 08, 2025 at 05:42:58PM +0200, Marc Gonzalez wrote: > >> I've run out of ideas to identify other sources of variance. >> (I ran everything in single user mode with nothing else running.) >> Perhaps with perf I could identify the source of stalls or bubbles? >> >> Hoping someone can point me in the right direction. > > There are few guides out there, explaining the common pitfalls. I > suppose you have already found them. Just in case you missed Frederic's > excellent blog on CPU isolation: > > https://www.suse.com/c/cpu-isolation-introduction-part-1/ Thanks for this great link! Is nohz_full=X a superset of isolcpus=X or are they orthogonal? (I see that /usr/sbin/irqbalance is running on my system.) Regards
