nanog mailing list archives
Re: [External] Re: 10g residential CPE
From: Baldur Norddahl <baldur.norddahl () gmail com>
Date: Fri, 25 Dec 2020 22:47:35 +0100
fre. 25. dec. 2020 21.49 skrev Michael Thomas <mike () mtcc com>:
On 12/25/20 12:40 PM, Chris Adams wrote:The other aspect of it is that we're doing these downloads while continuing to play other games and chat (both things sensitive to latency). Some have family/roommates in the home, so they may be streaming audio and/or video at the same time. Do we fill up a gigabit? No, probably not... but we'd notice if we had a lot less.But using the right queuing disciplines it a lot cheaper than the brute force and ignorance of just upping the bandwidth, right? It seems really surprising after almost a decade of discovery of bufferbloat that most CPE are still doing tail drops. Mike
For download that queue discipline needs to be implemented at the ISP end. It is just a week or so since I asked what other operators were doing with that and I got very few replies. So maybe we can assume the answer is not much. I also learned that the big iron providers J and C only implements tail drop and WRED. That's it. It is not sufficient to provide good service, so the only option is to throw more bandwidth at the problem. If the operator wants to keep bufferbloat low you will not be able to utilise your 1 Gbps to that speed when downloading from distant servers. But with the same bufferbloat measured in milliseconds you will still have a 10x bigger buffer and thus 10x bigger bandwidth delay product. That translates to 10x the speed. That speed might just be 100 Mbps on your 1000 Mbps connection. But it would have been just 10 Mbps on a 100 Mbps... Regards Baldur
Current thread:
- Re: [External] Re: 10g residential CPE, (continued)
- Re: [External] Re: 10g residential CPE Mark Tinka (Dec 27)
- Re: [External] Re: 10g residential CPE Mel Beckman (Dec 28)
- Re: [External] Re: 10g residential CPE Mark Tinka (Dec 28)
- Re: [External] Re: 10g residential CPE Mark Tinka (Dec 27)
- Re: [External] Re: 10g residential CPE Mark Tinka (Dec 25)
- Re: [External] 10g residential CPE Jared Mauch (Dec 28)
- Re: [External] Re: 10g residential CPE Mark Tinka (Dec 25)
- Re: [External] Re: 10g residential CPE Mike Hammett (Dec 26)
- Re: [External] Re: 10g residential CPE Jared Geiger (Dec 26)
- Re: [External] Re: 10g residential CPE Mikael Abrahamsson via NANOG (Dec 26)
- Re: [External] Re: 10g residential CPE Baldur Norddahl (Dec 25)
- RE: [External] Re: 10g residential CPE Keith Medcalf (Dec 26)
- Re: [External] Re: 10g residential CPE Mark Tinka (Dec 25)
- Re: [External] Re: 10g residential CPE Jay R. Ashworth (Dec 25)
- Re: [External] Re: 10g residential CPE Mark Tinka (Dec 26)
- Message not available
- Re: [External] Re: 10g residential CPE Mark Tinka (Dec 26)
- Message not available
- Re: [External] Re: 10g residential CPE Mark Tinka (Dec 26)
- Re: [External] Re: 10g residential CPE Mark Tinka (Dec 25)
- Re: [External] Re: 10g residential CPE Mark Tinka (Dec 25)
- RE: [External] Re: 10g residential CPE Tony Wicks (Dec 25)
- Re: [External] Re: 10g residential CPE Mike Hammett (Dec 26)