> On 10/18/2007 10:25 PM, Marcelo Tosatti wrote:
>
> > AIX contains the SIGDANGER signal to notify applications to free up
> > some unused cached memory:
> >
> >
http://www.ussg.iu.edu/hypermail/linux/kernel/0007.0/0901.html
> >
> > There have been a few discussions on implementing such an idea on
> > Linux, but nothing concrete has been achieved.
> >
> > On the kernel side Rik suggested two notification points: "about to
> > swap" (for desktop scenarios) and "about to OOM" (for embedded-like
> > scenarios).
> >
> > With that assumption in mind it would be necessary to either have
> > two special devices for notification, or somehow indicate both
> > events through the same file descriptor.
> >
> > Comments are more than welcome.
>
> Given the desktop/embedded distinction you made, do you need both
> scenarios active at the same time? If not, it seems something like a
>
> echo -n <level> >/proc/sys/vm/danger
>
> could do with just one sigdanger notification point? (with <level>
> suitably defined as or in terms of the used threshold value).
