lkml.org 
[lkml]   [2006]   [Jun]   [13]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
From
SubjectRe: [PATCH]: Adding a counter in vma to indicate the number of physical pages backing it
Andi Kleen wrote:

>On Monday 12 June 2006 21:42, Rohit Seth wrote:
>
>>I think having this
>>information in each vma keeps the impact (of adding new counter) to very
>>low.
>>
>>Second question is to advertize this value to user space. Please let me
>>know what suites the most among /proc, /sys or system call (or if there
>>is any other mechanism then let me know) for a per process per segment
>>related information.
>>
>
>I think we first need to identify the basic need.
>Don't see why we even need per VMA information so far.
>

Exactly. There is no question that walking page tables will be slower
than having a counter like your patch does; the question is why we
need it.

--

Send instant messages to your online friends http://au.messenger.yahoo.com

-
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: 2006-06-13 06:29    [W:0.074 / U:7.300 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site