On Fri, 29 Jun 2018 14:45:08 +0200 Andrey Konovalov <andreyknvl@xxxxxxxxxx> wrote: > >> What kind of memory consumption testing would you like to see? > > > > Well, 100kb or so is a teeny amount on virtually any machine. I'm > > assuming the savings are (much) more significant once the machine gets > > loaded up and doing work? > > So with clean kernel after boot we get 40 kb memory usage. With KASAN > it is ~120 kb, which is 200% overhead. With KHWASAN it's 50 kb, which > is 25% overhead. This should approximately scale to any amounts of > used slab memory. For example with 100 mb memory usage we would get > +200 mb for KASAN and +25 mb with KHWASAN. (And KASAN also requires > quarantine for better use-after-free detection). I can explicitly > mention the overhead in %s in the changelog. > > If you think it makes sense, I can also make separate measurements > with some workload. What kind of workload should I use? Whatever workload people were running when they encountered problems with KASAN memory consumption ;) I dunno, something simple. `find / > /dev/null'?
