Re: [rfc] Ignore Fsync Calls in Laptop_Mode

[david]

On Tue, 31 May 2011, D. Jansen wrote:

> On Tue, May 31, 2011 at 4:03 AM, Ted Ts'o <tytso@xxxxxxx> wrote:
> > On Mon, May 30, 2011 at 11:24:03PM +0200, D. Jansen wrote:
> > > > do you really have so many fsync's going on that the disk spins up so much
> > > > that you would gain 10-20% battery life?
> > >
> > > Yes. Every autosave in LibreOffice triggers one. And I want autosave,
> > > but I want them in memory, not on disk.
> >
> > What on *heck* good does an autosave to memory do? ÂAre you afraid
> > your X server is going to go poof, or OpenOffice is going to crash on
> > you?
> Unfortunately, yes. This happens to me regularly, e.g. roughly every
> 10th resume. It's a poulsbo system. ;)
> Another reason is a Java extension that makes it crash happy.
> (Please don't tell me now that the real fix is to fix poulsbo...)
>
> > I can't remember the last time this has happened to me. ÂIt's
> > typically a system crash or a power loss that causes me to lose an
> > OpenOffice session.
>
> Well, good for you! Power loss didn't ever occur to me on the other
> hand, at least not on my netbook.

failure to resume is effectivly power loss. a autosave to ram would be 
lost, just like with a power loss or system crash.

David Lang