netdev - RE: When TCP keepalives tuned shorter than retransmission timeouts

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Message-ID: <47086954-fccc-425a-8548-e3c88df93ee7@default>
Date:	Wed, 4 Dec 2013 13:50:58 -0800 (PST)
From:	Venkat Venkatsubra <venkat.x.venkatsubra@...cle.com>
To:	Eric Dumazet <eric.dumazet@...il.com>
Cc:	netdev@...r.kernel.org, David Miller <davem@...emloft.net>
Subject: RE: When TCP keepalives tuned shorter than retransmission timeouts

> 
> Then change max number of retransmits : tcp_retries2 ?
> 
> Keepalive timer is not a way to defeat TCP exponential backoff.
> 
> Its really there to send probes when a session is idle.
> 

Thanks. We plan to try out TCP_USER_TIMEOUT option since that is settable per-socket.

Venkat
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