Re: [aqm] CoDel's control law that determines drop frequency

> On 3 Nov, 2015, at 18:22, Jeff Weeks wrote: > > I believe that means 'count' has to reach some nearly impossibly high value > of (100ms/5198ns)^2 == 370,107,128 > > I say nearly impossible, because it will take minutes (hours?) to get that > high (if my math is

Re: [aqm] CoDel's control law that determines drop frequency

> Sandvine Incorporated > ____________ > From: aqm [aqm-boun...@ietf.org] on behalf of Andrew Mcgregor > [andrewm...@google.com] > Sent: Sunday, October 25, 2015 6:44 PM > To: Dave Dolson > Cc: Kathleen Nichols; Bob Briscoe; Dave Taht; Van Jacobson; AQM

Re: [aqm] CoDel's control law that determines drop frequency

een Nichols; Bob Briscoe; Dave Taht; Van Jacobson; AQM IETF list Subject: Re: [aqm] CoDel's control law that determines drop frequency CoDel does have the form of a controller; drop rate (not probability) is a function of sojourn time (not queue size) and history, encoded in the state varia

Re: [aqm] CoDel's control law that determines drop frequency

with the full division and sqrt. Cheers, Jeff From: aqm [aqm-boun...@ietf.org] on behalf of Bob Briscoe [i...@bobbriscoe.net] Sent: Thursday, October 01, 2015 9:06 AM To: Polina Goltsman Cc: AQM IETF list Subject: Re: [aqm] CoDel's control law that determines

Re: [aqm] CoDel's control law that determines drop frequency

Taht; Andrew Mcgregor Cc: Kathleen Nichols; AQM IETF list; Van Jacobson Subject: Re: [aqm] CoDel's control law that determines drop frequency Dave, It says the point at which cake enters drop state depends on how quickly the queue is growing. But I don't see anything on the page you referenced about

Re: [aqm] CoDel's control law that determines drop frequency

Polina, I've answered your points but changed their order... On 30/09/15 16:43, Polina Goltsman wrote: Bob, If I understand Codel's law correctly, Codel "starts fresh" every time it enters dropping state, so when the load increases it will take more time for the control law to reach the

Re: [aqm] CoDel's control law that determines drop frequency

On Wed, Sep 30, 2015 at 1:50 AM, Bob Briscoe wrote: > Andrew, > > I am also not so interested in an AQM dealing directly with unresponsive > traffic - I prefer to keep policing and AQM as separately deployable > functions, because AQM should be policy-neutral, whereas

Re: [aqm] CoDel's control law that determines drop frequency

Dear Bob, On 09/30/2015 10:50 AM, Bob Briscoe wrote: Early on, Rong Pan showed that it takes CoDel ages to bring high load under control. I think this linear increase is the reason. Is there a link to this ? Polina ___ aqm mailing list

Re: [aqm] CoDel's control law that determines drop frequency

Polina Goltsman writes: >> Early on, Rong Pan showed that it takes CoDel ages to bring high load under >> control. I think this linear increase is the reason. > > Is there a link to this ? I have an analysis of transient behaviour in my recent paper (section

Re: [aqm] CoDel's control law that determines drop frequency

Hi, Am 30.09.2015 um 15:02 schrieb Bob Briscoe: > Yes, Toke's right - I was talking about how fast the control law moves, > not the steady state. Ok, talking past each other...I meant steady state of TCP flows and not steady state of CoDel, i.e. CA phase not slow start. Sorry for the confusion.

Re: [aqm] CoDel's control law that determines drop frequency

Roland, Toke, Yes, Toke's right - I was talking about how fast the control law moves, not the steady state. Bob On 30/09/15 13:25, Toke Høiland-Jørgensen wrote: "Bless, Roland (TM)" writes: Am 30.09.2015 um 13:52 schrieb Toke Høiland-Jørgensen: Polina Goltsman

Re: [aqm] CoDel's control law that determines drop frequency

Hi, Am 30.09.2015 um 13:52 schrieb Toke Høiland-Jørgensen: > Polina Goltsman writes: > >>> Early on, Rong Pan showed that it takes CoDel ages to bring high load under >>> control. I think this linear increase is the reason. >> >> Is there a link to this ? > > I

Re: [aqm] CoDel's control law that determines drop frequency

Polina, I think this was it: I have a set of charts from Rong with many more tests showing CoDel's sluggish responsiveness, but I believe the above was the published summary. Bob On 30/09/15 10:13, Polina Goltsman wrote:

Re: [aqm] CoDel's control law that determines drop frequency

m] CoDel's control law that determines drop frequency Polina, I think this was it: <https://www.ietf.org/proceedings/85/slides/slides-85-iccrg-2.pdf> I have a set of charts from Rong with many more tests showing CoDel's sluggish responsiveness, but I believe the above was the publishe

Re: [aqm] CoDel's control law that determines drop frequency

Toke, Having originally whinged that no-one ever responded to my original 2013 posting, now it's my turn to be embarrassed for having missed your interesting response for over 3 months. Cool that the analysis proves correct in practice - always nice. The question is still open whether this