From: Willy Tarreau <w@1wt.eu>
To: Eric Dumazet <eric.dumazet@gmail.com>
Cc: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>,
Florian Fainelli <f.fainelli@gmail.com>,
simon.guinot@sequanux.org, netdev@vger.kernel.org,
Arnaud Ebalard <arno@natisbad.org>,
edumazet@google.com, Cong Wang <xiyou.wangcong@gmail.com>,
linux-arm-kernel@lists.infradead.org
Subject: Re: [BUG,REGRESSION?] 3.11.6+,3.12: GbE iface rate drops to few KB/s
Date: Wed, 20 Nov 2013 01:35:19 +0100 [thread overview]
Message-ID: <20131120003519.GA22150@1wt.eu> (raw)
In-Reply-To: <1384906129.8604.132.camel@edumazet-glaptop2.roam.corp.google.com>
On Tue, Nov 19, 2013 at 04:08:49PM -0800, Eric Dumazet wrote:
> On Wed, 2013-11-20 at 00:53 +0100, Arnaud Ebalard wrote:
>
> > Anyway, I think if the thread keeps going on improving mvneta, I'll do
> > all additional tests from RAM and will stop polluting netdev w/ possible
> > sata/disk/fs issues.
>
> ;)
>
> Alternative would be to use netperf or iperf to not use disk at all
> and focus on TCP/network issues only.
Yes, that's for the same reason that I continue to use inject/httpterm
for such purposes :
- httpterm uses tee()+splice() to send pre-built pages without copying ;
- inject uses recv(MSG_TRUNC) to ack everything without copying.
Both of them are really interesting to test the hardware's capabilities
and to push components in the middle to their limits without causing too
much burden to the end points.
I don't know if either netperf or iperf can make use of this now, and
I've been used to my tools, but I should take a look again.
Cheers,
Willy
next prev parent reply other threads:[~2013-11-20 0:35 UTC|newest]
Thread overview: 67+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-11-10 13:53 [BUG,REGRESSION?] 3.11.6+,3.12: GbE iface rate drops to few KB/s Arnaud Ebalard
2013-11-12 6:48 ` Cong Wang
2013-11-12 7:56 ` Arnaud Ebalard
2013-11-12 8:36 ` Willy Tarreau
2013-11-12 9:14 ` Arnaud Ebalard
2013-11-12 10:01 ` Willy Tarreau
2013-11-12 15:34 ` Arnaud Ebalard
2013-11-13 7:22 ` Willy Tarreau
2013-11-17 14:19 ` Willy Tarreau
2013-11-17 17:41 ` Eric Dumazet
2013-11-19 6:44 ` Arnaud Ebalard
2013-11-19 13:53 ` Eric Dumazet
2013-11-19 17:43 ` Willy Tarreau
2013-11-19 18:31 ` Eric Dumazet
2013-11-19 18:41 ` Willy Tarreau
2013-11-19 23:53 ` Arnaud Ebalard
2013-11-20 0:08 ` Eric Dumazet
2013-11-20 0:35 ` Willy Tarreau [this message]
2013-11-20 0:43 ` Eric Dumazet
2013-11-20 0:52 ` Willy Tarreau
2013-11-20 8:50 ` Thomas Petazzoni
2013-11-20 19:11 ` Willy Tarreau
2013-11-20 19:26 ` Arnaud Ebalard
2013-11-20 21:28 ` Arnaud Ebalard
2013-11-20 21:54 ` Willy Tarreau
2013-11-21 0:44 ` Willy Tarreau
2013-11-21 18:38 ` ARM network performance and dma_mask (was: [BUG,REGRESSION?] 3.11.6+,3.12: GbE iface rate drops to few KB/s) Willy Tarreau
2013-11-21 19:04 ` Thomas Petazzoni
2013-11-21 21:51 ` Willy Tarreau
2013-11-21 22:01 ` ARM network performance and dma_mask Rob Herring
2013-11-21 22:13 ` Willy Tarreau
2013-11-21 21:51 ` [BUG,REGRESSION?] 3.11.6+,3.12: GbE iface rate drops to few KB/s Arnaud Ebalard
2013-11-21 21:52 ` Willy Tarreau
2013-11-21 22:00 ` Eric Dumazet
2013-11-21 22:55 ` Arnaud Ebalard
2013-11-21 23:23 ` Rick Jones
2013-11-20 17:12 ` Willy Tarreau
2013-11-20 17:30 ` Eric Dumazet
2013-11-20 17:38 ` Willy Tarreau
2013-11-20 18:52 ` David Miller
2013-11-20 17:34 ` Willy Tarreau
2013-11-20 17:40 ` Eric Dumazet
2013-11-20 18:15 ` Willy Tarreau
2013-11-20 18:21 ` Eric Dumazet
2013-11-20 18:29 ` Willy Tarreau
2013-11-20 19:22 ` Arnaud Ebalard
2013-11-18 10:09 ` David Laight
2013-11-18 10:52 ` Willy Tarreau
2013-11-18 10:26 ` Thomas Petazzoni
2013-11-18 10:44 ` Simon Guinot
2013-11-18 16:54 ` Stephen Hemminger
2013-11-18 17:13 ` Eric Dumazet
2013-11-18 10:51 ` Willy Tarreau
2013-11-18 17:58 ` Florian Fainelli
2013-11-12 14:39 ` [PATCH] tcp: tsq: restore minimal amount of queueing Eric Dumazet
2013-11-12 15:24 ` Sujith Manoharan
2013-11-13 14:06 ` Eric Dumazet
2013-11-13 14:32 ` [PATCH v2] " Eric Dumazet
2013-11-13 21:18 ` Arnaud Ebalard
2013-11-13 21:59 ` Holger Hoffstaette
2013-11-13 23:40 ` Eric Dumazet
2013-11-13 23:52 ` Holger Hoffstaette
2013-11-17 23:15 ` Francois Romieu
2013-11-18 16:26 ` Holger Hoffstätte
2013-11-18 16:47 ` Eric Dumazet
2013-11-13 22:41 ` Eric Dumazet
2013-11-14 21:26 ` David Miller
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