From: David Miller <davem@davemloft.net>
To: ycheng@google.com
Cc: netdev@vger.kernel.org, edumazet@google.com, nanditad@google.com,
brakmo@google.com
Subject: Re: [PATCH v2 net-next] tcp: snmp stats for Fast Open, SYN rtx, and data pkts
Date: Mon, 03 Mar 2014 15:58:24 -0500 (EST) [thread overview]
Message-ID: <20140303.155824.2235118519552620477.davem@davemloft.net> (raw)
In-Reply-To: <1393878696-28137-1-git-send-email-ycheng@google.com>
From: Yuchung Cheng <ycheng@google.com>
Date: Mon, 3 Mar 2014 12:31:36 -0800
> Add the following snmp stats:
>
> TCPFastOpenActiveFail: Fast Open attempts (SYN/data) failed beacuse
> the remote does not accept it or the attempts timed out.
>
> TCPSynRetrans: number of SYN and SYN/ACK retransmits to break down
> retransmissions into SYN, fast-retransmits, timeout retransmits, etc.
>
> TCPOrigDataSent: number of outgoing packets with original data (excluding
> retransmission but including data-in-SYN). This counter is different from
> TcpOutSegs because TcpOutSegs also tracks pure ACKs. TCPOrigDataSent is
> more useful to track the TCP retransmission rate.
>
> Change TCPFastOpenActive to track only successful Fast Opens to be symmetric to
> TCPFastOpenPassive.
>
> Signed-off-by: Yuchung Cheng <ycheng@google.com>
> Signed-off-by: Eric Dumazet <edumazet@google.com>
> Signed-off-by: Nandita Dukkipati <nanditad@google.com>
> Signed-off-by: Lawrence Brakmo <brakmo@google.com>
Applied, thank you.
prev parent reply other threads:[~2014-03-03 20:58 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-03-03 20:31 [PATCH v2 net-next] tcp: snmp stats for Fast Open, SYN rtx, and data pkts Yuchung Cheng
2014-03-03 20:58 ` David Miller [this message]
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