On Monday 14 July 2008 21:51:25 Christian Borntraeger wrote: > Am Montag, 14. Juli 2008 schrieb Hidetoshi Seto: > > + /* Wait all others come to life */ > > + while (cpus_weight(prepared_cpus) != num_online_cpus() - 1) { > > + if (time_is_before_jiffies(limit)) > > + goto timeout; > > + cpu_relax(); > > + } > > + > > Hmm. I think this could become interesting on virtual machines. The > hypervisor might be to busy to schedule a specific cpu at certain load > scenarios. This would cause a failure even if the cpu is not really locked > up. We had similar problems with the soft lockup daemon on s390. 5 seconds is a fairly long time. If all else fails we could have a config option to simply disable this code. > It would be good to not-use wall-clock time, but really used cpu time > instead. Unfortunately I have no idea, if that is possible in a generic > way. Heiko, any ideas? Ah, cpu time comes up again. Perhaps we should actually dig that up again; Zach and Jeremy CC'd. Thanks, Rusty. _______________________________________________ Virtualization mailing list Virtualization@xxxxxxxxxxxxxxxxxxxxxxxxxx https://lists.linux-foundation.org/mailman/listinfo/virtualization