> > I've now triggered a very slow boot at 3x 36GB 8-core VMs on a 128GB host > > (i.e. 108GB on a 128GB host). > > > > It has the same profile with _raw_spin_lock_irqsave and > > isolate_freepages_block at the top. > > Then it's still memory starved. > > Please provide /proc/zoneinfo while this is happening.
Is there a way to capture/reproduce this 'slow boot' behavior with a simple regression test? I'd like to know if it happens on a single-physical CPU socket machine, or just on dual-sockets. I'm also observing an interesting phenomenon here.. Kernel development can move so fast as to make regression testing pointless. ;)
