From: David Miller <davem@davemloft.net>
To: agermanov@anchorfree.com
Cc: netdev@vger.kernel.org, nanditad@google.com, edumazet@google.com,
ncardwell@google.com, ycheng@google.com,
d.adamushko@anchorfree.com
Subject: Re: [PATCH v2] tcp: cwnd does not increase in TCP YeAH
Date: Thu, 08 Sep 2016 17:16:42 -0700 (PDT) [thread overview]
Message-ID: <20160908.171642.656826696713730257.davem@davemloft.net> (raw)
In-Reply-To: <b4685d52-7fa0-5fac-b361-a20b610674d7@anchorfree.com>
From: Artem Germanov <agermanov@anchorfree.com>
Date: Wed, 7 Sep 2016 10:49:36 -0700
> Commit 76174004a0f19785a328f40388e87e982bbf69b9
> (tcp: do not slow start when cwnd equals ssthresh )
> introduced regression in TCP YeAH. Using 100ms delay 1% loss virtual
> ethernet link kernel 4.2 shows bandwidth ~500KB/s for single TCP
> connection and kernel 4.3 and above (including 4.8-rc4) shows bandwidth
> ~100KB/s.
> That is caused by stalled cwnd when cwnd equals ssthresh. This patch
> fixes it by proper increasing cwnd in this case.
>
> Signed-off-by: Artem Germanov <agermanov@anchorfree.com>
> Acked-by: Dmitry Adamushko <d.adamushko@anchorfree.com>
Applied and queued up for -stable, thanks.
prev parent reply other threads:[~2016-09-09 0:16 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-09-05 4:03 [PATCH] tcp: cwnd does not increase in TCP YeAH Artem Germanov
2016-09-05 12:52 ` Neal Cardwell
2016-09-06 20:58 ` David Miller
2016-09-07 17:49 ` [PATCH v2] " Artem Germanov
2016-09-09 0:16 ` David Miller [this message]
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