All of lore.kernel.org
 help / color / mirror / Atom feed
From: hiren panchasara <hiren@strugglingcoder.info>
To: netdev@vger.kernel.org
Subject: RACK not getting disabled
Date: Mon, 18 Sep 2017 13:14:28 -0700	[thread overview]
Message-ID: <20170918201428.GB28186@strugglingcoder.info> (raw)

[-- Attachment #1: Type: text/plain, Size: 650 bytes --]

Hi all, I am trying to disable rack to see 3dupacks in action during
loss-detection but based on the pcap, I see that it's still trigger
loss-recovery on the first SACK (as if RACK is still enabled/active).

Here is what I did to disable rack:
net.ipv4.tcp_recovery = 0

I've also disabled metrics:
net.ipv4.tcp_no_metrics_save = 1 
And also flushed existing entries with 'ip tcp_metrics flush' just to be
on a safer side.

Not really relevant here but I've also switched to reno.

I am on: 4.10.0-33-generic
pcap: https://transfer.sh/mfoiN/reno_no_rack.pcap

What am I missing? I can provide any additional info.

Cheers,
Hiren

[-- Attachment #2: Type: application/pgp-signature, Size: 603 bytes --]

             reply	other threads:[~2017-09-18 20:19 UTC|newest]

Thread overview: 7+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2017-09-18 20:14 hiren panchasara [this message]
2017-09-18 21:18 ` RACK not getting disabled Eric Dumazet
2017-09-18 21:29   ` hiren panchasara
2017-09-18 21:45     ` hiren panchasara
2017-09-18 21:46     ` Yuchung Cheng
2017-09-18 21:55       ` hiren panchasara
2017-09-18 22:05         ` Yuchung Cheng

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=20170918201428.GB28186@strugglingcoder.info \
    --to=hiren@strugglingcoder.info \
    --cc=netdev@vger.kernel.org \
    /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.