On Mon, Oct 29, 2018 at 9:48 AM, Matthew Wilcox <willy@xxxxxxxxxxxxx> wrote: > On Mon, Oct 29, 2018 at 09:25:05AM -0700, Jim Mattson wrote: >> On Sun, Oct 28, 2018 at 6:58 PM, Wanpeng Li <kernellwp@xxxxxxxxx> wrote: >> > We have not yet encounter memory is too fragmented to allocate kvm >> > related metadata in our overcommit pools, is this true requirement >> > from the product environments? >> >> Yes. > > Are your logs granular enough to determine if turning this into an > order-2 allocation (by splitting out "struct fpu" allocations) will be > sufficient to resolve your problem, or do we need to turn it into an > order-1 or vmalloc allocation to achieve your production goals? Turning this into an order-2 allocation should suffice.