RE: Re-inventing TCP (was: newbie check..)

2013-08-30 Thread Terry Gilsenan
That could have disastrous consequences for the rest of the traffic on that link. From: Wietse Venema<mailto:wie...@porcupine.org> Sent: ‎30/‎08/‎2013 10:27 AM To: Postfix users<mailto:postfix-users@postfix.org> Subject: Re-inventing TCP (was:

Re: Re-inventing TCP (was: newbie check..)

2013-08-30 Thread Robert Sander
Am 30.08.2013 19:36, schrieb Terry Gilsenan: > The killer on high latency links is the tcp-window and the continual wait for > ack. With links above 1000ms this compounded delay reduces the available > bandwidth to a very small percentage of the interface speed (eg:256kbps on a > 2mbps link). W

Re: Re-inventing TCP (was: newbie check..)

2013-08-30 Thread Jim Reid
On 30 Aug 2013, at 18:36, Terry Gilsenan wrote: > The killer on high latency links is the tcp-window and the continual wait for > ack. With links above 1000ms this compounded delay reduces the available > bandwidth to a very small percentage of the interface speed (eg:256kbps on a > 2mbps link

RE: Re-inventing TCP (was: newbie check..)

2013-08-30 Thread Terry Gilsenan
-Original Message- From: owner-postfix-us...@postfix.org [mailto:owner-postfix-us...@postfix.org] On Behalf Of Robert Sander Sent: Saturday, 31 August 2013 3:47 AM To: postfix-users@postfix.org Subject: Re: Re-inventing TCP (was: newbie check..) >Am 30.08.2013 19:36, schrieb Te

RE: Re-inventing TCP (was: newbie check..)

2013-08-30 Thread Terry Gilsenan
-Original Message- From: owner-postfix-us...@postfix.org [mailto:owner-postfix-us...@postfix.org] On Behalf Of Wietse Venema Sent: Saturday, 31 August 2013 2:56 AM To: Postfix users Subject: Re: Re-inventing TCP (was: newbie check..) >Terry Gilsenan: >> I have done testing

Re: Re-inventing TCP (was: newbie check..)

2013-08-30 Thread k...@rice.edu
t; Subject: Re: Re-inventing TCP (was: newbie check..) > > >Am 30.08.2013 19:36, schrieb Terry Gilsenan: > > >> The killer on high latency links is the tcp-window and the continual > >> wait for ack. With links above 1000ms this compounded delay reduces > >>

Re: Re-inventing TCP (was: newbie check..)

2013-08-30 Thread Wietse Venema
Terry Gilsenan: > I have done testing with file transfers using both TCP and UDP, Wietse > Would not the same result be achieved by disabling TCP congestion > control? I am not implying that doing so is a good idea. Terry Gilsenan: > That could have disastrous consequences for the rest of the tra

Re-inventing TCP (was: newbie check..)

2013-08-30 Thread Wietse Venema
Terry Gilsenan: > I have done testing with file transfers using both TCP and UDP, Would not the same result be achieved by disabling TCP congestion control? I am not implying that doing so is a good idea. Wietse