From: David Miller <davem@davemloft.net>
To: ycheng@google.com
Cc: netdev@vger.kernel.org
Subject: Re: [PATCH 0/2 net-next] tcp: reducing lost retransmits in recovery
Date: Wed, 08 Jul 2015 13:30:03 -0700 (PDT) [thread overview]
Message-ID: <20150708.133003.612921512265899727.davem@davemloft.net> (raw)
In-Reply-To: <1435785075-20600-1-git-send-email-ycheng@google.com>
From: Yuchung Cheng <ycheng@google.com>
Date: Wed, 1 Jul 2015 14:11:13 -0700
> This patch series reduces lost retransmits in recovery, in particular
> when dealing with traffic policers. The main problem is that
> slow start in recovery under policing can cause massive lost and
> retransmit storms: any excess sending rate turns into drops. The
> solution is to avoid doing slow start when lost retransmit is
> detected and use packet conservation instead.
>
> On networks with traffic policers the patches have lowered the
> TCP loss rates by ~20% from Google servers without latency regressions.
Looks great, series applied to net-next.
prev parent reply other threads:[~2015-07-08 20:30 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-07-01 21:11 [PATCH 0/2 net-next] tcp: reducing lost retransmits in recovery Yuchung Cheng
2015-07-01 21:11 ` [PATCH 1/2 net-next] tcp: reduce cwnd if retransmit is lost in CA_Loss Yuchung Cheng
2015-07-01 21:11 ` [PATCH 2/2 net-next] tcp: PRR uses CRB mode by default and SS mode conditionally Yuchung Cheng
2015-07-08 20:30 ` David Miller [this message]
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=20150708.133003.612921512265899727.davem@davemloft.net \
--to=davem@davemloft.net \
--cc=netdev@vger.kernel.org \
--cc=ycheng@google.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 a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).