lkml.org 
[lkml]   [2010]   [Dec]   [7]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
From
SubjectRe: [PATCH] user_ns: Improve the user_ns on-the-slab packaging
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
>


\
 
 \ /
  Last update: 2010-12-07 15:35    [W:0.066 / U:0.184 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site