Re: [ANNOUNCE] Ramback: faster than a speeding bullet
From: Pavel Machek
Date: Fri Mar 14 2008 - 05:30:48 EST
Hi!
> > Everyone who has write cache turned on for their hard drives is
> > running in a mode similar to ramback anyway (except for when the file
> > system is set to force writes to the platter, but that is rare).
> > Admittedly, software crashes rarely cause the write cache to be lost,
> > but hardware failures do, practically every time.
>
> On the contrary - the hard disk cache is managed by the barrier logic in
> the kernel, and the ordering even on failures is fairly predictable.
Well, not even all modern hdds support barriers... It would be really
nice to have _safe_ settings by default here...
--
(english) http://www.livejournal.com/~pavelmachek
(cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/