Re: [PATCH net-next] tcp: refine pacing rate determination

2015-08-25 Thread David Miller
From: Eric Dumazet Date: Fri, 21 Aug 2015 17:38:02 -0700 > From: Eric Dumazet > > When TCP pacing was added back in linux-3.12, we chose > to apply a fixed ratio of 200 % against current rate, > to allow probing for optimal throughput even during > slow start phase, where cwnd can be doubled ev

Re: [PATCH net-next] tcp: refine pacing rate determination

2015-08-21 Thread Neal Cardwell
On Fri, Aug 21, 2015 at 8:38 PM, Eric Dumazet wrote: > From: Eric Dumazet > > When TCP pacing was added back in linux-3.12, we chose > to apply a fixed ratio of 200 % against current rate, > to allow probing for optimal throughput even during > slow start phase, where cwnd can be doubled every ot

[PATCH net-next] tcp: refine pacing rate determination

2015-08-21 Thread Eric Dumazet
From: Eric Dumazet When TCP pacing was added back in linux-3.12, we chose to apply a fixed ratio of 200 % against current rate, to allow probing for optimal throughput even during slow start phase, where cwnd can be doubled every other gRTT. At Google, we found it was better applying a different