lkml.org 
[lkml]   [2011]   [Oct]   [5]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
SubjectRe: big picture UDP/IP performance question re 2.6.18 -> 2.6.32
From
Date
Le lundi 03 octobre 2011 à 14:02 -0400, starlight@binnacle.cx a écrit :
> At 06:16 PM 10/3/2011 +0200, Eric Dumazet wrote:
> >
> >It seems you use 4096 2MB hugepages, and your
> >machine has 1GB pages availabe, you could
> >try to use them.
> >
> >(boot cmd : hugepagesz=1GB hugepages=8 )
>
> Tried it and got errno 12 on the segment
> allocations. None were allocated, though
> the count is six and the largest is exactly
> 1GB. Don't have time to dig into it.
>

Thats pretty normal ;)

With 2MB pages, your segment size must be a 2MB multiple.

With 1GB pages, your segment size must be a .... 1GB multiple.

So only applicable is say you handle one big 8GB segment for example, or
2 4GB segments... Well you see the picture.




--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/

\
 
 \ /
  Last update: 2011-10-05 08:55    [W:0.030 / U:0.784 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site