On Wed, 21 Mar 2007 16:01:32 -0700 Randy Dunlap <[EMAIL PROTECTED]> wrote:
> On Mon, 19 Mar 2007 21:22:33 -0700 H. Peter Anvin wrote: > > > Randy Dunlap wrote: > > >> > > >> The we duplicate all the relevant /proc knobs: > > >> > > >> cat /proc/sys/vm/dirty_ratio > > >> 30 > > >> cat /proc/sys/vm/hires-dirty_ratio/ > > >> 300000 > > >> > > >> Or we do something else ;) > > > > > > Sounds better. I wasn't very keen on the userspace interface that this > > > exposed. Will look at those. > > > > > > > Okay... may be I could throw a spanner in the machinery, and suggest > > another option: perhaps we should add a way to do sysctl which can > > handle fractional (fixed-point) values... more coherent/detailed message > > tomorrow. > > I prefer the fixed-point values for pressure and dirty* to having > duplicated entries for each of them. I'll proceed with that idea. > Problem is, if a read of /proc/sys/vm/dirty_ratio is changed to return 7.457 then existing userspace might get confused. This might be acceptable if we are careful to ensure that reads of /proc/sys/vm/dirty_ratio will always return an integer if it was previously initialised with an integer. - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
