nanog mailing list archives
Re: Trident3 vs Jericho2
From: Mike Hammett <nanog () ics-il net>
Date: Fri, 9 Apr 2021 09:09:53 -0500 (CDT)
I have seen the opposite, where small buffers impacted throughput. Then again, it was observation only, no research into why, other than superficial. ----- Mike Hammett Intelligent Computing Solutions Midwest Internet Exchange The Brothers WISP ----- Original Message ----- From: "Tom Beecher" <beecher () beecher cc> To: "Mike Hammett" <nanog () ics-il net> Cc: "Dmitry Sherman" <dmitry () interhost net>, "NANOG" <nanog () nanog org> 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 need big buffers wherever the transition to the smaller port speed is located. While the larger buffer there you are likely to be severely impacting application throughput. On Fri, Apr 9, 2021 at 9:05 AM Mike Hammett < nanog () ics-il net > wrote: <blockquote> 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 buffers are fine. If you have 100G and 1G ports, you'll need big buffers wherever the transition to the smaller port speed is located. ----- Mike Hammett Intelligent Computing Solutions Midwest Internet Exchange The Brothers WISP From: "Dmitry Sherman" < dmitry () interhost net > 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 </blockquote>
Current thread:
- Trident3 vs Jericho2 Dmitry Sherman (Apr 09)
- Re: Trident3 vs Jericho2 Mike Hammett (Apr 09)
- Re: Trident3 vs Jericho2 Tom Beecher (Apr 09)
- Re: Trident3 vs Jericho2 Mike Hammett (Apr 09)
- Re: Trident3 vs Jericho2 Saku Ytti (Apr 09)
- Re: Trident3 vs Jericho2 Vincent Bernat (Apr 09)
- Re: Trident3 vs Jericho2 Tom Beecher (Apr 09)
- Re: Trident3 vs Jericho2 Mike Hammett (Apr 09)
- Re: Trident3 vs Jericho2 William Herrin (Apr 09)
- Re: Trident3 vs Jericho2 lobna gouda (Apr 09)