Rare project developers

[mc36 <>]

fyi


-------- Forwarded Message --------
Subject: Re: [PRP-List] PRP/NRP Zoom from 10am to 11am Pacific on Thursday 
March 3
Date: Fri, 4 Mar 2022 16:59:48 +0100
From: Tomasz Szewczyk <>
To: Tim Chown <>
CC: Xavier Jeannin <>, Fr  d  ric LOUI 
<>, mc36 <>, Ivana Golub 
<>

Hi,
Please take a look at some more detailed test - with burst step 100 (instead 
of 1000 packets)

br
Tomek

W dniu 04.03.2022 o  12:12, Tim Chown pisze:
> Hi,
>
> Sorry, I didn   t see from the report that there are two ingress and one 
> egress report, I   m not used to looking at reports like this.  Topology 
> helps.
>
> So does this show that if these are 100G links, and you have 10G on two 
> ingress ports, there   s drops rather than a clean 20G aggregate on the 
> egress?  I   d not expect any drops in this scenario, but that may be naive :)
>
> Tim
>
> > On 4 Mar 2022, at 11:07, Tomasz Szewczyk <> wrote:
> >
> > Hi,
> > You can se that in 6th step we noticed a number of dropped packets. This mean 
> > burst size was 1+5x1000 for every ingress interface. So we can say that the 
> > buffer size is ~8000 packets (IMIX size distribution)
> > This is also independent from load (you can see similar effect for different 
> > load values)
> > br
> > Tomek
> >
> > W dniu 04.03.2022 o 11:56, Tim Chown pisze:
> > > Hi,
> > >
> > > Thanks for the initial test results.  I   m not sure how to interpret them.  
> > > I can see there are losses at certain points, but it   s unclear to me what 
> > > the tests are testing :)
> > >
> > > Tim
> > >
> > > > On 4 Mar 2022, at 09:51, Tomasz Szewczyk <> wrote:
> > > >
> > > > Hi,
> > > > I just finished first approach. Please take a look at attchached report. It 
> > > > was made with Burst size step 1000. Unfortunately this is not included in 
> > > > tables. First value for each load size is burst 1, next is 1000 and so on.
> > > > br
> > > > Tomek
> > > >
> > > > W dniu 04.03.2022 o 10:44, Xavier Jeannin pisze:
> > > > > Hello
> > > > >
> > > > > Le 04/03/2022    10:35, Tim Chown a   crit :
> > > > > > The Internet2 people are about to play with 400G Edgecore!
> > > > > >
> > > > > > Something to consider?  Would Tomek be able to test it with RARE/FreeRtr? :)
> > > > > FYI, Tomasz is right now restarted the 100G test of RARE/freeRtr switch in 
> > > > > Pozna  . Csaba kindly helped him yesterday to solve an issue related to a 
> > > > > laser
> > > > > Regards
> > > > > Xavier
> > > > >
> > > > > > > Begin forwarded message:
> > > > > > >
> > > > > > > From: Thomas DeFanti <>
> > > > > > > Subject: [PRP-List] Re: PRP/NRP Zoom from 10am to 11am Pacific on Thursday 
> > > > > > > March 3
> > > > > > > Date: 3 March 2022 at 18:47:54 GMT
> > > > > > > To: , Tom DeFanti <>, 
> > > > > > >
> > > > > > > Reply-To: 
> > > > > > <snip>
> > > > > > >   Stordis says a 400G switch is coming.  Will have 400G edgecore very soon.
> > > > > > Tim
> > > > > --
> > > > > Xavier JEANNIN
> > > > > Network Dpt.
> > > > > GN4-3 Network technology evolution (WP6 T1) task leader
> > > > > T  l. : +33 1 5394 2042
> > > > > Mob. : +33 6 3017 0963
> > > > >
> > > > > www.renater.fr
> > > > --
> > > > Tomasz Szewczyk
> > > > Pozna  skie Centrum Superkomputerowo Sieciowe :: Pion Technologii Sieciowych
> > > > Poznan Supercomputing and Networking Center :: Network Technology Division
> > > > tel: +48 61 858 2040
> > --
> > Tomasz Szewczyk
> > Pozna  skie Centrum Superkomputerowo Sieciowe :: Pion Technologii Sieciowych
> > Poznan Supercomputing and Networking Center :: Network Technology Division
> > tel: +48 61 858 2040

--
Tomasz Szewczyk
Pozna  skie Centrum Superkomputerowo Sieciowe :: Pion Technologii Sieciowych
Poznan Supercomputing and Networking Center :: Network Technology Division
tel: +48 61 858 2040

Attachment: RARE-congestion-step-100.pdf
Description: Adobe PDF document