From: "David S. Miller" <davem@davemloft.net>
To: Lennert Buytenhek <buytenh@wantstofly.org>
Cc: netdev@oss.sgi.com
Subject: Re: way of figuring out total number of retransmitted packets on a TCP socket?
Date: Wed, 20 Oct 2004 15:14:48 -0700 [thread overview]
Message-ID: <20041020151448.51209278.davem@davemloft.net> (raw)
In-Reply-To: <20041020130134.GC24757@xi.wantstofly.org>
On Wed, 20 Oct 2004 15:01:34 +0200
Lennert Buytenhek <buytenh@wantstofly.org> wrote:
> I'm looking for a way of counting the total number of retransmitted packets
> sent on a TCP connection. I tried querying TCP_INFO:tcpi_retransmits, but
> that seems to be not the metric I'm looking for.
>
> Anyone got any ideas? (Apart from using tcpdump+tcptrace.)
tcpi_retransmits only accounts for timeout based retransmits.
Retransmits which occur dynamically due to fast-retransmit
and other non-timeout based decisions are accounted for
in "tcpi_retrans", so that is probably the value you are
looking for.
Unlike another person's response to this thread, you don't
need the huge web100 patch to get at this information :-)
next prev parent reply other threads:[~2004-10-20 22:14 UTC|newest]
Thread overview: 16+ messages / expand[flat|nested] mbox.gz Atom feed top
2004-10-20 13:01 way of figuring out total number of retransmitted packets on a TCP socket? Lennert Buytenhek
2004-10-20 13:25 ` Baruch Even
2004-10-20 22:16 ` David S. Miller
2004-10-20 22:14 ` David S. Miller [this message]
2004-10-20 22:35 ` Lennert Buytenhek
2004-10-20 22:53 ` David S. Miller
2004-10-20 23:04 ` Andi Kleen
2004-10-20 23:07 ` David S. Miller
2004-10-20 23:27 ` Andi Kleen
2004-10-20 23:42 ` David S. Miller
2004-10-21 1:18 ` Arnaldo Carvalho de Melo
2004-10-20 23:44 ` Lennert Buytenhek
2004-10-20 23:44 ` David S. Miller
2004-10-21 9:01 ` Lennert Buytenhek
2004-10-21 4:37 ` David S. Miller
2004-10-26 13:47 ` Lennert Buytenhek
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