[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] Re: [Xen-devel] [xen-unstable test] 57852: regressions - FAIL
On Thu, 2015-06-11 at 09:45 +0100, Ian Campbell wrote: > On Thu, 2015-06-11 at 08:02 +0100, Jan Beulich wrote: > > >>> On 10.06.15 at 16:08, <ian.campbell@xxxxxxxxxx> wrote: > > > On Wed, 2015-06-10 at 14:45 +0100, Jan Beulich wrote: > > >> So if we're going to approach Intel with this - will you or should I? > > > > > > I think it'd be best coming from you. > > > > Just have sent it off; in putting together the technical details it > > became clear that elbling* indeed are at a newer microcode level, > > so I think this at least slightly raises the chances of an update to > > help fiano* (if so I of course wonder why the vendor hasn't made > > a suitable BIOS update available yet). > > It's possible that there is one which we've not applied... I've now run a bunch of adhoc runs with the microcode update in place (from 0x416 to 0x428 on these particular machines): 58468 fiano0 guest-stop 58479 fiano0 guest-stop 58485 fiano0 windows-install 58494 fiano0 guest-stop 58499 fiano1 guest-stop 58509 fiano1 windows-install 58516 fiano1 guest-stop 58527* fiano0 guest-stop 58531 fiano0 guest-stop 58534 fiano0 guest-stop 58537 fiano0 guest-stop 58538 fiano1 guest-stop 58544 fiano1 guest-stop 58547 fiano1 guest-stop 58550 fiano0 guest-stop 58555 fiano0 guest-stop 58557 fiano0 guest-stop 58560 fiano1 guest-stop 58563 fiano1 guest-stop 58565 fiano1 windows-install (*) rebuilt binaries because previous build was gc'd, same versions as before. So 3/20 = 15% failure rate (fiano0: 1/11=9%; fiano1: 2/9=22%). Which is better than the ~50% seen at the start of this thread, so it is worth applying the ucode update I think (and it would have been regardless the right thing to do), I do think a 15-20% failure rate might be worthy of further investigation by Intel too, since the failure rate with no-apicv was 1/13 = 7% (fiano0: 1/7=14%, fiano1: 0/6=0%), although those numbers are less significant due to fewer runs. Ian. _______________________________________________ Xen-devel mailing list Xen-devel@xxxxxxxxxxxxx http://lists.xen.org/xen-devel
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