Re: lowmemory android driver not needed?

[Greg KH <greg@kroah.com>]

On Wed, Jan 14, 2009 at 03:32:38PM -0800, Arve Hjønnevåg wrote:
> On Wed, Jan 14, 2009 at 3:17 PM, Greg KH <greg@kroah.com> wrote:
> >> We actually use 6 different thresholds for killing processes. I don't
> >> know what all the classes are, processes with a higher oom_adj value
> >> can be killed with less impact to the user than processes with a lower
> >> oom_adj value. The first few classes only affect latency when
> >> switching apps, but later classes stop non critical background
> >> services and finally the foreground app. Another reason to not kill
> >> every process at the same threshold is that memory may not be free
> >> immediately when the process is killed.
> >
> > But the lowmemorykiller android module doesn't have anything to do with
> > this, right?
> >
> 
> It does. We write the thresholds to
> /sys/module/lowmemorykiller/parameters/adj and
> /sys/module/lowmemorykiller/parameters/minfree then set the oom_adj
> value per process. If the standard oom killer can be adjusted in a
> similar way, then we will not need the lowmemorykiller module.

Great, care to document this somewhere so people like me don't get
confused?

thanks,

greg k-h