Messages in this thread | | | Date | Thu, 9 Aug 2007 18:22:37 +0200 | From | Diego Calleja <> | Subject | Re: [PATCH 00/23] per device dirty throttling -v8 |
| |
El Thu, 09 Aug 2007 11:02:38 -0400, Chuck Ebbert <cebbert@redhat.com> escribió:
> NT maintains atimes by default, at least up to XP. You have to edit the > registry to turn them off, and it is a single global switch -- not per > mountpoint like Unix. > > And it makes a huge difference there, too.
In windows Vista they've disabled atime updates by default.
And XP maintains atimes, but it uses a trick to avoid the performance penalty we suffer in linux, similar to what Andi Kleen suggested: they keep atime updates in memory for one hour, and only sync to disk after that time - of course they also sync it if there's a oportunity to do it, like when updating mtime. - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
| |