Re: [Dle-develop] [RFC][PATCH] avoid swapping out with swappiness==0

[Satoru M. <sat...@hd...>]

On 04/24/2012 04:20 AM, Richard Davies wrote:
> 
> I have run into problems with heavy swapping with swappiness==0 and 
> was pointed to this thread ( 
> http://marc.info/?l=linux-mm&m=133522782307215 )

Did you test this patch with your workload?
If yes, how did it come out?

> I strongly believe that Linux should have a way to turn off swapping 
> unless absolutely necessary. This means that users like us can run 
> with swap present for emergency use, rather than having to disable it 
> because of the side effects.

Agreed. That is why I proposed the patch.

> Personally, I feel that swappiness==0 should have this (intuitive) 
> meaning, and that people running RHEL5 are extremely unlikely to run 
> 3.5 kernels(!)
> 
> However, swappiness==-1 or some other hack is definitely better than 
> no patch.


Regards,
Satoru