[lkml]   [1998]   [Nov]   [30]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
Messages in this thread
SubjectRe: [2.1.130-3] Page cache DEFINATELY too persistant... feature?

On Sat, 28 Nov 1998 14:44:06 +0100 (MET), (Rogier
Wolff) said:

> I'm not sure that this is possible. We will need to "throttle at the
> source" eventually. I can write an application that writes a file at
> 50Mb per second (try "dd if=/dev/zero of=testfile"), and the disk is
> never going to keep up with that.

We do. The buffer cache grows with the low GFP_BUFFER priority, and
even then grows only if the cache is within a certain limit and we have
enough free space. Exhaust those limits and it starts recycling
existing buffers, which is a natural at-source throttle for buffer


To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to
Please read the FAQ at

 \ /
  Last update: 2005-03-22 13:45    [from the cache]
©2003-2014 Jasper Spaans. hosted at Digital Ocean