[Sugar-devel] MicroSD Card performance variance on XO-1.5

[Tomeu Vizoso]

On Sat, Aug 7, 2010 at 18:11, Bernie Innocenti <bernie at codewiz.org> wrote:
> [cc += sugar-devel, tch]
>
> El Sat, 07-08-2010 a las 11:27 +0200, Tomeu Vizoso escribió:
>
>> Btw, have read that some notifications about available memory have
>> landed in cgroups in recent kernels. The Sugar shell could listen to
>> those and give a chance to background activities to save their state
>> before killing them, thus avoiding OOM in some (most?) cases.
>
> We could do this even without an advanced reporting mechanism. The
> monitoring code in the CPU & Memory meter could detect memory shortage
> and automatically quit  the least recently used activity.

So we would have a periodic wakeup? The test would be the amount of
free memory plus buffers and caches?

> Or, maybe, we could make this a manual process: pop up a notification
> when memory is short and ask which activity should be closed.

I would just close one of the background activities, the LRU or the biggest one.

Regards,

Tomeu

> A while ago, Tincho has been working on implementing the Freedesktop
> notification protocol in Sugar. This feature didn't make it for
> Dextrose, but perhaps it could be completed in time to be merged into
> 0.90.
>
> --
>   // Bernie Innocenti - http://codewiz.org/
>  \X/  Sugar Labs       - http://sugarlabs.org/
>
>