Re: [tip:sched/hrtick] [hrtimer] 2889243848: stress-ng.timermix.ops_per_sec 30.1% regression
Peter Zijlstra <[email protected]> Tue, 10 Mar 2026 19:50:06 +0100
| Newsgroups | dev.linux.lists.oe-lkp,org.kernel.vger.linux-kernel |
|---|---|
| Message-ID | <[email protected]> |
On Tue, Mar 10, 2026 at 07:16:51PM +0100, Peter Zijlstra wrote: > On Tue, Mar 10, 2026 at 01:11:09PM -0400, Joe Talbott wrote: > > > It looks like it can be found here: > > https://download.01.org/0day-ci/archive/20260310/[email protected]/repro-script > > > > stress-ng --timeout 60 --times --verify --metrics --no-rand-seed --timermix 64 > > Thanks, that does indeed work and show the regression. > > Lets see if I can spot the fail... It looks like that benchmark manages to trip significant nr_hangs, and yes, I made those more expensive because those were not expected to actually happen at any sane rate. Lets see if we can cure that without making a giant mess of things.