Re: PPP feature request (Tx queue len + close)

[Jean Tourrilhes <jt@bougret.hpl.hp.com>]

On Tue, Mar 05, 2002 at 01:17:42PM -0800, Maksim Krasnyanskiy wrote:
>
> True. PPP is a sort of "pass through" thing in your case.

	Not fully. In some cases, PPP does compression (and
potentially encryption), and at 4 Mb/s those operations can become
close to bottlenecks (at least, on my slow boxes). But at least, it's
constant latency, as opposed to IrDA latencies.

> Yes. I see your point. It doesn't really make any difference which layer
> buffers stuff (unless that layer introduces delays). So I guess in your case
> you can just set txqueuelen to 1 if you're sure that underlying layer has long
> enough queues.

	By the way, same logic applies to PAN. In PAN it's easier,
because as PAN is a pseudo Ethernet driver you can fudge tx_queue_len
directly.

> I see.
> Did you try ifconfig txqueuelen 1 ?

	Not yet. I'm finishing the current batch of IrDA fixes, and
other backlog of Wireless patches. I would also need to squeeze
buffers out of IrDA queues.

> Max

	Thanks, have fun...

	Jean