Quoting Pavel Emelyanov (xemul@xxxxxxxxxxxxx): > On 12/07/2010 05:27 PM, Serge E. Hallyn wrote: > > Quoting Pavel Emelyanov (xemul@xxxxxxxxxxxxx): > >> Currently on 64-bit arch the user_namespace is 2096 and when > >> being kmalloc-ed it resides on a 4k slab wasting 2003 bytes. > >> > >> If we allocate a separate cache for it and reduce the hash size > >> from 128 to 64 chains the packaging becomes *much* better - the > > > > Hey Pavel, > > > > I trust you've done some performance tests and found no > > regressions with a few hundred users? > > How many hundreds are you interested in? :) 128 users didn't > reveal any regressions. I have no good guess, would have said 500, 128 sounds good :) So long as actual benchmarks showed no regression within a 95% confidence interval. Thanks for the patch, the memory savings are impressive. Acked-by: Serge E. Hallyn <serge@xxxxxxxxxx> -serge PS - I'm hoping to send out a version of the targeted capabilities (based on userns) patchset later this week. _______________________________________________ Containers mailing list Containers@xxxxxxxxxxxxxxxxxxxxxxxxxx https://lists.linux-foundation.org/mailman/listinfo/containers
