From: Andi Kleen <andi@firstfloor.org>
To: Rick Jones <rick.jones2@hp.com>
Cc: Andi Kleen <andi@firstfloor.org>,
netdev@vger.kernel.org, davem@davemloft.net
Subject: Re: [PATCH] Disable TSO for non standard qdiscs
Date: Thu, 31 Jan 2008 20:25:21 +0100 [thread overview]
Message-ID: <20080131192521.GG4671@one.firstfloor.org> (raw)
In-Reply-To: <47A214FE.3050200@hp.com>
> So, at what timescale do people using these qdiscs expect things to
> appear "smooth?" 64KB of data at GbE speeds is something just north of
> half a millisecond unless I've botched my units somewhere.
One typical use case for TBF is you talking to a DSL bridge that
is connected using a GBit Ethernet switch. For these DSL connections it gives
much better behaviour to shape the traffic to slightly below
your external link speed so that you can e.g. prioritize packets properly.
But the actual external link speed is much lower than GbE.
A lot of GbE NICs enable TSO by default.
-Andi
next prev parent reply other threads:[~2008-01-31 18:50 UTC|newest]
Thread overview: 50+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-01-31 12:46 [PATCH] Disable TSO for non standard qdiscs Andi Kleen
2008-01-31 17:23 ` Stephen Hemminger
2008-01-31 18:33 ` Andi Kleen
2008-01-31 18:01 ` Patrick McHardy
2008-01-31 18:37 ` Andi Kleen
2008-01-31 18:08 ` Stephen Hemminger
2008-01-31 18:11 ` Patrick McHardy
2008-01-31 18:53 ` Andi Kleen
2008-01-31 18:21 ` Patrick McHardy
2008-01-31 19:01 ` Andi Kleen
2008-01-31 18:47 ` Waskiewicz Jr, Peter P
2008-01-31 19:34 ` Andi Kleen
2008-01-31 19:39 ` Waskiewicz Jr, Peter P
2008-01-31 23:10 ` Arnaldo Carvalho de Melo
2008-01-31 23:42 ` Waskiewicz Jr, Peter P
2008-02-01 4:26 ` Patrick McHardy
2008-02-01 4:35 ` Andi Kleen
2008-02-01 4:36 ` Andi Kleen
2008-01-31 20:33 ` Jarek Poplawski
2008-01-31 23:04 ` Jarek Poplawski
2008-02-01 7:42 ` Jarek Poplawski
2008-02-01 9:28 ` Waskiewicz Jr, Peter P
2008-02-01 21:47 ` Jarek Poplawski
2008-02-01 5:01 ` Andi Kleen
2008-02-01 6:35 ` Glen Turner
2008-02-01 6:46 ` Patrick McHardy
2008-02-01 7:46 ` Andi Kleen
2008-02-01 7:25 ` Patrick McHardy
2008-02-01 9:37 ` Waskiewicz Jr, Peter P
2008-02-01 9:56 ` Patrick McHardy
2008-02-01 12:06 ` jamal
2008-02-01 19:02 ` Waskiewicz Jr, Peter P
2008-02-01 22:56 ` Jarek Poplawski
2008-02-02 1:51 ` Waskiewicz Jr, Peter P
2008-02-02 5:20 ` Andi Kleen
2008-02-01 14:34 ` Andi Kleen
2008-02-01 17:24 ` Stephen Hemminger
2008-01-31 18:48 ` Patrick McHardy
2008-02-02 22:57 ` Herbert Xu
2008-02-03 9:35 ` Andi Kleen
2008-01-31 18:26 ` Rick Jones
2008-01-31 19:03 ` Andi Kleen
2008-01-31 18:35 ` Rick Jones
2008-01-31 19:25 ` Andi Kleen [this message]
2008-01-31 19:14 ` Rick Jones
2008-02-01 1:04 ` Andy Furniss
2008-02-01 4:31 ` Andi Kleen
2008-02-02 22:59 ` Herbert Xu
2008-02-01 21:58 ` Rick Jones
2008-02-02 4:10 ` Andi Kleen
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