From: Mikael Abrahamsson <swmike@swm.pp.se>
To: Benjamin Cronce <bcronce@gmail.com>
Cc: bloat <bloat@lists.bufferbloat.net>
Subject: Re: [Bloat] bloat at gigE
Date: Wed, 23 Sep 2015 14:23:47 +0200 (CEST) [thread overview]
Message-ID: <alpine.DEB.2.02.1509231415380.8750@uplift.swm.pp.se> (raw)
In-Reply-To: <CAJ_ENFG1KrJzSjzNY=7yX+F0SeJB1M7j9bV5yp_pcga_TbKgmw@mail.gmail.com>
On Wed, 23 Sep 2015, Benjamin Cronce wrote:
> The upload wasn't even saturated. Probably why upload bloat was very low.
> Large bloat on the download just shows you the server really can push more
> than 1Gb. 200ms bloat with 913Mb down is about 20MiB of buffer. That's
> insane! That's about 20x more buffer than my entire 24 port 1Gb Procurve
> managed switch. What kind of network equipment has that much buffer?
That's typically one distinction between L3 switch and a "router". The L3
switch typically has on-die memory that can be as low as 128KB or up to a
few megabytes of memory.
Then you have the real "service edge" routers with 128.000 queues that's
used to aggregate tens of thousands of customers, where a linecard can
have many gigabytes of packet buffer memory.
--
Mikael Abrahamsson email: swmike@swm.pp.se
prev parent reply other threads:[~2015-09-23 12:23 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-09-23 8:34 Dave Taht
2015-09-23 12:10 ` Benjamin Cronce
2015-09-23 12:22 ` Steinar H. Gunderson
2015-09-23 12:23 ` Mikael Abrahamsson [this message]
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