Messages in this thread | | | Date | Tue, 07 Dec 2010 17:33:04 +0300 | From | Pavel Emelyanov <> | Subject | Re: [PATCH] user_ns: Improve the user_ns on-the-slab packaging |
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On 12/07/2010 05:27 PM, Serge E. Hallyn wrote: > Quoting Pavel Emelyanov (xemul@parallels.com): >> 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.
> -serge >
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