On 11/13/19 10:42 AM, Paolo Valente wrote: > > >> Il giorno 13 nov 2019, alle ore 16:01, Oleksandr Natalenko <oleksandr@xxxxxxxxxxxxxx> ha scritto: >> >> On 13.11.2019 15:25, Oleksandr Natalenko wrote: >>> I didn't try to switch schedulers, but what I see now is once the >>> system is able to boot with BFQ, the I/O can still hang on I/O burst >>> (which for me happens to happen during VM reboot). >>> This may also not hang forever, but just slow down considerably. I've >>> noticed this inside a KVM VM, not on a real HW. >> >> Possible call traces: > > Ok, you may have given me enough information, thank you very much. > > Could you please apply the attached (compressed) patch on top of my > offending patch? For review purposes, here is the simple change: FWIW, I dropped the previous patch. -- Jens Axboe
