On Tue, Nov 25, 2025 at 02:59:20AM +0000, H. Hartzer wrote: > Hi misc@, > > I've been experimenting with VMM and trying to load up a host with a > number of servers. > > I've observed that with 7.8 on 512MB servers, reorder_kernel will > involve some swapping. It works fine if running a couple, but if > starting plenty, it takes quite a while to finish as swapping to disk > through VMM is pretty slow. > > If I disable swap, reorder_kernel fails, but the host disk doesn't get > thrashed. > > With 768MB and no swap, things seem to behave pretty well. I suspect > it'd be the same situation with 768MB and swap. > > Is it possible to remove kernel options not useful for VMs, such as say > DRM and graphics drivers, and not have those as part of the linking > process? I imagine that would lower reorder_kernel memory consumption > quite a bit. >
probably won't help as much as you think. Those devices don't attach, so they won't consume any memory aside from a few mb in .text . -ml > To be fair, this isn't something most will run into. I've been testing > with 32-46 small VMs. I have played with vm.conf's stagger setting, > which I am sure I can make work with 512MB servers, but it would > significantly slow down the time to get back online. I'd love to have > 512MB servers not swapping on every boot. > > I will say, VMM is a joy to use and very straightforward. So far it > seems quite reliable. > > Thank you! > > -Henrich >
