lkml.org 
[lkml]   [2008]   [Feb]   [22]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
From
SubjectRe: [PATCH] Document huge memory/cache overhead of memory controller in Kconfig
KAMEZAWA Hiroyuki wrote:
> On Thu, 21 Feb 2008 16:33:33 +0530
> Balbir Singh <balbir@linux.vnet.ibm.com> wrote:
>
>>> Another issue is that it will slightly increase TLB/cache
>>> cost of the memory controller, but I think that would be a fair
>>> trade off for it being zero cost when disabled but compiled
>>> in.
>>>
>>> Doing it with vmalloc should be easy enough. I can do such
>>> a patch later unless someone beats me to it...
>>>
>> I'll get to it, but I have too many things on my plate at the moment. KAMEZAWA
>> also wanted to look at it. I looked through some vmalloc() internals yesterday
>> and I am worried about allocating all the memory on a single node in a NUMA
>> system and changing VMALLOC_XXXX on every architecture to provide more vmalloc
>> space. I might be missing something obvious.
>>
>
> I'll post a series of patch to do that later (it's under debug now...)
> I'm glad if people (including you) look it and give me advices.
>

Thank you so much for your help. I'll definitely look at it and review/test them.

--
Warm Regards,
Balbir Singh
Linux Technology Center
IBM, ISTL


\
 
 \ /
  Last update: 2008-02-22 08:13    [from the cache]
©2003-2014 Jasper Spaans. Advertise on this site