On Fri, Jul 17, 2015 at 10:27 PM, Eric Dumazet <eric.duma...@gmail.com> wrote: > > On Fri, 2015-07-17 at 14:22 -0700, Yuchung Cheng wrote: > > If TLP was unable to send a probe, it extended the RTO to > > now + icsk_rto. But extending the RTO makes little sense > > if no TLP probe went out. With this commit, instead of > > extending the RTO we re-arm it relative to the transmit time > > of the write queue head. > > But what was the reason the probe could not be sent ? > > If it is local congestion or memory allocation error, it does make sense > to not add fuel to the fire. Good point. We can identify those so we don't attempt to retransmit on these errors, but will retransmit on receive-window limit. I'll re-spin the patch.
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