[erlang-questions] Linux O_DIRECT flag

[Toby Thain]

On 14-Mar-08, at 9:23 PM, Per Hedeland wrote:

> ...
> is why "some other" OSes implement some "push-back" mechanisms for the
> cache, or in older times simply had a hard limit as percentage of RAM.
>
> I don't know off-hand whether there is a way to make Linux do  
> something
> like that, but I would think so (at least the hard limit method, maybe
> with a number calculated by the user) - but the default is AFAIK "give
> the cache all it wants".

Valentin, have you investigated tuning/limiting the cache. OTOH I  
don't know whether it's possible but it seems strange that the  
capability would have been entirely omitted.

--Toby