From: Andrew Vagin <avagin@parallels.com>
To: Eric Dumazet <eric.dumazet@gmail.com>
Cc: netdev@vger.kernel.org, vvs@parallels.com,
"Michał Mirosław" <mirq-linux@rere.qmqm.pl>
Subject: Re: Slow speed of tcp connections in a network namespace
Date: Sun, 30 Dec 2012 01:19:39 +0400 [thread overview]
Message-ID: <20121229211938.GC4350@paralelels.com> (raw)
In-Reply-To: <1356815546.21409.5277.camel@edumazet-glaptop>
On Sat, Dec 29, 2012 at 01:12:26PM -0800, Eric Dumazet wrote:
> On Sun, 2012-12-30 at 00:08 +0400, Andrew Vagin wrote:
>
> > Is it right, that a received window will be less, if packets are not sorted?
> > Looks like a bug.
>
> Not really a bug.
>
> TCP is very sensitive to packet reorders. I wont elaborate here as
> its a bit off topic.
>
> Try to reorders credits/debits on your bank account, I am pretty sure
> you'll lose some money or even get serious troubles.
>
> Of course, enabling GRO on eth0 would definitely help a bit...
>
> (once/iff veth driver features are fixed to allow GSO packets being
> forwarded without being segmented again)
>
Eric, thank you for the help.
I need time for thinking. I will ask you, if new questions will appear.
>
>
next prev parent reply other threads:[~2012-12-29 21:20 UTC|newest]
Thread overview: 16+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-12-29 9:24 Slow speed of tcp connections in a network namespace Andrew Vagin
2012-12-29 13:53 ` Eric Dumazet
2012-12-29 14:50 ` Andrew Vagin
2012-12-29 17:40 ` Eric Dumazet
2012-12-29 18:29 ` Andrew Vagin
2012-12-29 18:58 ` Eric Dumazet
2012-12-29 19:41 ` Eric Dumazet
2012-12-29 20:08 ` Andrew Vagin
2012-12-29 20:20 ` Eric Dumazet
2012-12-29 21:07 ` Andrew Vagin
2012-12-29 21:12 ` Eric Dumazet
2012-12-29 21:19 ` Andrew Vagin [this message]
2012-12-29 21:15 ` Andrew Vagin
2012-12-29 16:01 ` Michał Mirosław
2012-12-30 2:26 ` [PATCH] veth: extend device features Eric Dumazet
2012-12-30 10:32 ` David Miller
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20121229211938.GC4350@paralelels.com \
--to=avagin@parallels.com \
--cc=eric.dumazet@gmail.com \
--cc=mirq-linux@rere.qmqm.pl \
--cc=netdev@vger.kernel.org \
--cc=vvs@parallels.com \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.