On Mon, Jun 08, 2015 at 10:57:30PM +0200, Laszlo Ersek wrote: [...] > > The issue is real. I've been working on some patches today for this. > I'll soon send an RFC series. > > It's actually easy to *test* this scenario: just create a 128GB or so > file, with "fallocate", on a sufficiently big filesystem. Then format it > with mkswap and add it with swapon. I have strict memory overcommit > settings on my laptop (/proc/sys/vm/overcommit_memory = 2), but with > such a swap file, a >= 64GB guest can easily be started. > > (I used my old spindle disk for the swap file. Since the guest is doing > practically nothing, it doesn't cause the disk to thrash.) >
That is really neat trick. :-) Only that Xen requires real ram to start a guest so I can't use it. :-/ Wei. _______________________________________________ Xen-devel mailing list Xen-devel@lists.xen.org http://lists.xen.org/xen-devel
