On Mon 04-09-17 16:58:30, Xishi Qiu wrote: > On 2017/9/4 16:21, Michal Hocko wrote: > > > From: Michal Hocko <mhocko@xxxxxxxx> > > > > We have a hardcoded 120s timeout after which the memory offline fails > > basically since the hot remove has been introduced. This is essentially > > a policy implemented in the kernel. Moreover there is no way to adjust > > the timeout and so we are sometimes facing memory offline failures if > > the system is under a heavy memory pressure or very intensive CPU > > workload on large machines. > > > > It is not very clear what purpose the timeout actually serves. The > > offline operation is interruptible by a signal so if userspace wants > > Hi Michal, > > If the user know what he should do if migration for a long time, > it is OK, but I don't think all the users know this operation > (e.g. ctrl + c) and the affect. How is this operation any different from other potentially long interruptible syscalls? -- Michal Hocko SUSE Labs -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@xxxxxxxxx. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: <a href=mailto:"dont@xxxxxxxxx";> email@xxxxxxxxx </a>
