From: Eric Dumazet <eric.dumazet@gmail.com>
To: Stephen Hemminger <shemminger@vyatta.com>
Cc: Hagen Paul Pfeifer <hagen@jauu.net>, netdev@vger.kernel.org
Subject: Re: [PATCH net-next 1/2] netem: rate-latency extension
Date: Fri, 25 Nov 2011 07:13:20 +0100 [thread overview]
Message-ID: <1322201600.2872.15.camel@edumazet-laptop> (raw)
In-Reply-To: <20111124210926.3e4b7567@s6510.linuxnetplumber.net>
Le jeudi 24 novembre 2011 à 21:09 -0800, Stephen Hemminger a écrit :
> I would rather a new qdisc then add more features to the already complex
> netem. Initially, there where was a rate control built into netem, but
> the consensus was to use stacking to do it.
Yes, but Hagen change adds a few lines to netem, and netem already
handles throttling. This is why I believe its a nice enhancement.
Being able to simulate a ratelimit (in bits per second by the way, the
usual bandwith unit, not bytes per second...) in a very easy way seems a
good thing, even if it handles only the egress side.
As Hagen mentioned, a standard qdisc is able to rate limit, but the
first packet sent has a null delay, even if its 64Kbyte packet. It
doesnt mimic a true link.
next prev parent reply other threads:[~2011-11-25 6:13 UTC|newest]
Thread overview: 18+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-11-24 17:39 [PATCH net-next 1/2] netem: rate-latency extension Hagen Paul Pfeifer
2011-11-24 17:39 ` [PATCH net-next 2/2] netem: add cell concept to simulate special MAC behavior Hagen Paul Pfeifer
2011-11-24 22:14 ` [PATCH net-next 1/2] netem: rate-latency extension Eric Dumazet
2011-11-24 22:31 ` Hagen Paul Pfeifer
2011-11-25 1:06 ` Bill Fink
2011-11-25 1:23 ` Hagen Paul Pfeifer
2011-11-25 5:09 ` Stephen Hemminger
2011-11-25 6:13 ` Eric Dumazet [this message]
2011-11-25 12:02 ` Hagen Paul Pfeifer
2011-11-25 2:22 ` [PATCH v2 net-next 1/2] netem: rate extension Hagen Paul Pfeifer
2011-11-25 2:22 ` [PATCH v2 net-next 2/2] netem: add cell concept to simulate special MAC behavior Hagen Paul Pfeifer
2011-11-28 23:01 ` Eric Dumazet
2011-11-28 23:30 ` Hagen Paul Pfeifer
2011-11-28 23:48 ` Eric Dumazet
2011-11-29 0:07 ` Hagen Paul Pfeifer
2011-11-26 11:00 ` [PATCH v2 net-next 1/2] netem: rate extension Eric Dumazet
2011-11-25 2:23 ` [PATCH v2 iproute2 1/2] utils: add s32 parser Hagen Paul Pfeifer
2011-11-25 2:23 ` [PATCH v2 iproute2 2/2] tc: netem rate shaping and cell extension Hagen Paul Pfeifer
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