lkml.org 
[lkml]   [2006]   [Dec]   [20]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
From
SubjectRe: Network drivers that don't suspend on interface down
On Wed, Dec 20, 2006 at 02:38:51PM +0100, Arjan van de Ven wrote:
> [1] What kind of latency would be allowed? Would an implementation be
> allowed to power up the phy say once per minute or once per 5 minutes to
> see if there is link? The implementation could do this progressively;
> first poll every X seconds, then after an hour, every minute etc.

I suspect that the hard maximum latency is the time needed by the user
to start the network himself, be it opening a root xterm and doing the
appropriate invocation or pulling up and clicking where appropriate in
a GUI. That's probably around 5 seconds. Over that, and they won't
even notice there is an autodetection running.

But still, 5 seconds is probably too much too, because it's going to
look like it's unreliable. The user has to see something happen
within half-a-second or so, otherwise he's going to start doing it by
hand. The "see" part is distribution/desktop-dependant and not the
kernel problem, but the top chrono happens when the rj45 is plugged
in.

OG.
-
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/

\
 
 \ /
  Last update: 2006-12-20 16:29    [W:0.206 / U:0.224 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site