On Thu, Oct 18, 2018 at 08:03:32AM +0200, Heiner Kallweit wrote: > On 18.10.2018 07:58, Jonathan Woithe wrote: > > On Thu, Oct 18, 2018 at 01:30:51AM +0200, Francois Romieu wrote: > >> Holger Hoffstätte <hol...@applied-asynchrony.com> : > >> [...] > >> The bug will induce delayed rx processing when a spike of "load" is > >> followed by an idle period. > > > > If this is the case, I wonder whether this bug might also be the cause of > > the long reception delays we've observed at times when a period of high > > network load is followed by almost nothing[1]. That thread[2] details the > > investigations subsequently done. A git bisect showed that commit > > da78dbff2e05630921c551dbbc70a4b7981a8fff was the origin of the misbehaviour > > we were observing. > > > > We still see the problem when we test with recent kernels. It would be > > great if the underlying problem has now been identified. > > > > I can possibly scrape some hardware together to test any proposed fix under > > our workload if there was interest. > > > Proposed fix is here: > https://patchwork.ozlabs.org/patch/985014/ > Would be good if you could test it. Thanks!
I should be able to do so tomorrow. Which kernel would you like me to apply the patch to? Regards jonathan
