[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] RE: [Xen-devel] [PATCH] Fix softlockup issue after vcpu hotplug
> > I don't mean to touch it only every 5s in the loop, I mean to touch it > every > time round the loop but only if stolen is greater than five seconds: > Ah right -- got it now; good point. > The only theoretical problem with this approach is if you got time > stolen > that accumulated to more than five seconds, but this happened in two or > more > bursts, back-to-back. Then no one stolen period would be enough to > trigger > the touch, but also the guest may not be running for long enough to > schedule > the softlockup thread. I really don't believe this would be an issue > ever in > practise however, given sane scheduling parameters and load on the > system. > If the system were loaded/configured so it could happen, the guest > would be > in dire straits for other reasons. How about using a slightly smaller value like 1 or 2 s -- something larger than the expected wakeup latency etc but small enough that it would take multiple back-to-back bursts to hit 10s... Simon _______________________________________________ Xen-devel mailing list Xen-devel@xxxxxxxxxxxxxxxxxxx http://lists.xensource.com/xen-devel
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