[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] Re: [Xen-devel] [PATCH net] xen-netback: add the scenario which now beyond the range time_after_eq().
>>> On 17.10.13 at 18:38, annie li <annie.li@xxxxxxxxxx> wrote: > On 2013-10-17 17:26, Jan Beulich wrote: >>> Yes, the issue only can be reproduced in 32-bit Dom0 (Beyond >>> MAX_ULONG/2 in 64-bit will need long long time) >>> >>> I think the gap should be think all environment even now extending 480+. >>> if now fall in the gap, one timer will be pending and replenish will be >>> in time. Please run the attachment test program. >> Not sure what this is supposed to tell me. I recognize that there >> are overflow conditions not handled properly, but (a) I have a >> hard time thinking of a sensible guest that sits idle for over 240 >> days (host uptime usually isn't even coming close to that due to >> maintenance requirements) and (b) if there is such a sensible >> guest, then I can't see why dealing with one being idle for over >> 480 days should be required too. >> > > If the guest contains multiple NICs, that situation probably happens > when one NIC keeps idle and others work under load. BTW, how do you get > the 240? 2^31 / 100 / 60 / 60 / 24 Obviously with HZ=1000 the span would be smaller by a factor of 10, which would make it even more clear that doubling the span doesn't really help. Jan _______________________________________________ Xen-devel mailing list Xen-devel@xxxxxxxxxxxxx http://lists.xen.org/xen-devel
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