Date: Thu, 30 Apr 2015 16:48:39 +0300 From: Karlis Laivins <karlis.laivins@gmail.com> To: "Eggert, Lars" <lars@netapp.com> Cc: George Neville-Neil <gnn@neville-neil.com>, "freebsd-net@freebsd.org" <freebsd-net@freebsd.org>, grenville armitage <garmitage@swin.edu.au> Subject: Re: Congestion Control Modification Message-ID: <CAF4H_7=uV8ng-%2BY93wR88-aeW19HabaqR0iVkDXf6yujE4Wbpw@mail.gmail.com> In-Reply-To: <98E7D40A-EC37-413D-85CE-2A6012811E08@netapp.com> References: <CAF4H_7mSGp_GZGaDBx8xq47FY1j85xLHq%2BZY1jMzprbzp%2Bg9zw@mail.gmail.com> <5535945F.90504@swin.edu.au> <CAF4H_7nOJP=Wy7LJSBi2PGupnMMvZu0xYeT2iYjhKDg-DPC6fw@mail.gmail.com> <F572540B-45C8-4EBF-9E18-7CA7E30CFD0C@neville-neil.com> <CAF4H_7=WZTmNUaS9x0DJh1YNRzFCJPbqJ_eFp12=z8snvTpn3g@mail.gmail.com> <98E7D40A-EC37-413D-85CE-2A6012811E08@netapp.com>
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Yes, you are correct, I meant to write "relative OWD". As David Hayes put it - "Relative OWD measurements are easier, and clock drift is not usually a problem over the time it takes to send and receive an ACK". Thank you for the correction! On Thu, Apr 30, 2015 at 4:19 PM, Eggert, Lars <lars@netapp.com> wrote: > On 2015-4-30, at 15:04, Karlis Laivins <karlis.laivins@gmail.com> wrote: > > I have yet to solve the issue of > > how to get the One Way Delay for the ACK message (the time it takes ACK > to > > arrive from receiver of the ACK'ed data sender) correctly. > > That won't work without synchronized clocks, which you can't really assume > to be present. > > Lars
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