On Thu, Oct 31, 2024 at 04:06:04PM -0700, Andrew Morton wrote: > hm. > > On Thu, 31 Oct 2024 22:45:49 +0000 Kinsey Ho <kinseyho@xxxxxxxxxx> wrote: > > > We noticed high overhead for pages allocated for struct swap_cgroup in > > our fleet. > > This is scanty. Please describe the problem further. > > > This patchset adds the number of pages allocated for struct > > swap_cgroup to vmstat. This can be a useful metric for identifying > > unneeded overhead on systems which configure swap. > > Possibly dumb question: can we switch swap_cgroup_prepare to kmalloc() > (or kmem-cache_alloc()) and use slab's accounting to satisfy this > requirement? Or vzalloc/kvmalloc(), which are used for allocating the rest of swap-related meta-data.
