Messages in this thread |  | | | Date | Tue, 7 Dec 2010 08:27:47 -0600 | | From | "Serge E. Hallyn" <> | | Subject | Re: [PATCH] user_ns: Improve the user_ns on-the-slab packaging |
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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?
-serge
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