Subject: Re: [RFC][PATCH 2/9] deadlock prevention core

From: Daniel Phillips <[email-masked]>
Date: Thu, 17 Aug 2006 16:53:01 -0700

Andrew Morton wrote:
> Daniel Phillips <[email-masked]> wrote:
>>What happened to the case where we just fill memory full of dirty file
>>pages backed by a remote disk?
> 
> Processes which are dirtying those pages throttle at
> /proc/sys/vm/dirty_ratio% of memory dirty.  So it is not possible to "fill"
> memory with dirty pages.  If the amount of physical memory which is dirty
> exceeds 40%: bug.

Hi Andrew,

So we make 400 MB of a 1 GB system unavailable for write caching just to
get around the network receive starvation issue?

What happens if some in kernel user grabs 68% of kernel memory to do some
very important thing, does this starvation avoidance scheme still work?

Regards,

Daniel