From: GitHub <noreply@github.com>
To: cerowrt-commits@lists.bufferbloat.net
Subject: [dtaht/ns-3-dev] c90461: Implement patch from linux:
Date: Wed, 15 Aug 2012 20:01:17 -0700 [thread overview]
Message-ID: <502c627d41a10_68bc1131af4944c2@sh3.rs.github.com.mail> (raw)
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Branch: refs/heads/master
Home: https://github.com/dtaht/ns-3-dev
Commit: c904617aeb639ea55975fe391f2a59fa91b0dd66
https://github.com/dtaht/ns-3-dev/commit/c904617aeb639ea55975fe391f2a59fa91b0dd66
Author: Andrew McGregor <andrew.mcgregor@alliedtelesis.co.nz>
Date: 2012-08-15 (Wed, 15 Aug 2012)
Changed paths:
M src/network/utils/codel-queue.cc
Log Message:
-----------
Implement patch from linux:
From: Eric Dumazet <edumazet@google.com>
One condition before codel_Newton_step() was not good if
we never left the dropping state for a flow. As a result
rec_inv_sqrt was 0, instead of the ~0 initial value.
codel control law was then set to a very aggressive mode, dropping
many packets before reaching 'target' and recovering from this problem.
To keep codel_vars_init() as efficient as possible, refine
the condition to make sure rec_inv_sqrt initial value is correct
Many thanks to Anton Mich for discovering the issue and suggesting
a fix.
reply other threads:[~2012-08-16 3:01 UTC|newest]
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