On Mon 04-09-17 16:58:30, Xishi Qiu wrote: > On 2017/9/4 16:21, Michal Hocko wrote: > > > From: Michal Hocko <mho...@suse.com> > > > > 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
