Buffer size has nothing to do with feature richness.
Assuming you are asking about DC - in a wide radix low oversubscription
network shallow buffers do just fine, some applications (think map reduce/ML
model training) have many to one traffic patterns and suffer from incast as the
result, deep
Sent: Friday, April 9, 2021 1:07 PM
To: Mike Hammett
Cc: nanog@nanog.org
Subject: Re: Trident3 vs Jericho2
On Fri, Apr 9, 2021 at 6:05 AM Mike Hammett wrote:
> What I've observed is that it's better to have a big buffer device
> when you're mixing port speeds. The more dramatic the port
&
On Fri, Apr 9, 2021 at 6:05 AM Mike Hammett wrote:
> What I've observed is that it's better to have a big buffer device
> when you're mixing port speeds. The more dramatic the port
> speed differences (and the more of them), the more buffer you need.
>
> If you have all the same port speed, small
❦ 9 avril 2021 17:20 +03, Saku Ytti:
> If we'd change TCP sender to bandwidth estimation, and newly created window
> space would be serialised at estimated receiver rate then we would need
> dramatically less buffers. However this less aggressive TCP algorithm would
> be outcompeted by new reno
> The Brothers WISP <http://www.thebrotherswisp.com/>
> <https://www.facebook.com/thebrotherswisp>
> <https://www.youtube.com/channel/UCXSdfxQv7SpoRQYNyLwntZg>
> --
> *From: *"Tom Beecher"
> *To: *"Mike Hammett"
: "Tom Beecher"
To: "Mike Hammett"
Cc: "Dmitry Sherman" , "NANOG"
Sent: Friday, April 9, 2021 8:40:00 AM
Subject: Re: Trident3 vs Jericho2
If you have all the same port speed, small buffers are fine. If you have 100G
and 1G ports, you'll
poRQYNyLwntZg>
> --
> *From: *"Dmitry Sherman"
> *To: *nanog@nanog.org
> *Sent: *Friday, April 9, 2021 7:57:05 AM
> *Subject: *Trident3 vs Jericho2
>
> Once again, which is better shared buffer featurerich or fat buffer
> switches?
> When its better to put big buffer switch? When its better to drop and
> retransmit instead of queueing?
>
> Thanks.
> Dmitry
>
>
There is no easy, one side fits all answer to this question. It's a complex
subject, and the answer will often be different depending on the
environment and traffic profile.
On Fri, Apr 9, 2021 at 8:58 AM Dmitry Sherman wrote:
> Once again, which is better shared buffer featurerich or fat
21 7:57:05 AM
Subject: Trident3 vs Jericho2
Once again, which is better shared buffer featurerich or fat buffer switches?
When its better to put big buffer switch? When its better to drop and
retransmit instead of queueing?
Thanks.
Dmitry
Once again, which is better shared buffer featurerich or fat buffer switches?
When its better to put big buffer switch? When its better to drop and
retransmit instead of queueing?
Thanks.
Dmitry
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