lkml.org 
[lkml]   [2008]   [Jan]   [31]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
SubjectRe: [PATCH] mm: MADV_WILLNEED implementation for anonymous memory
From
Date
Peter Zijlstra <a.p.zijlstra@chello.nl> writes:
>
> Ah, that is Lennarts Pulse Audio thing, he has samples in memory which
> might not have been used for a while, and he wants to be able to
> pre-fetch those when he suspects they might need to be played. So that
> once the audio thread comes along and stuffs them down /dev/dsp its all
> nice in memory.

The real problem that seems to make swapping so slow is that the data
tends to be badly fragmented on the swap partition. I suspect if that
problem was attached the need for such prefetching would be far less
because swap in would be much faster.

-Andi


\
 
 \ /
  Last update: 2008-01-31 11:17    [W:0.069 / U:0.480 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site