Re: [Bloat] [Cerowrt-devel] uplink bufferbloat and scheduling problems

[Dave Collier-Brown <dave.collier-brown@indexexchange.com>]

On 12/1/21 16:09, David Lang wrote:

> On Wed, 1 Dec 2021, David P. Reed wrote:
>
>> To say it again: More memory *doesn't* improve throughput when the
>> queue depths exceed one packet on average
>
> slight disagreement here. the buffer improves throughput up to the
> point where it handles one burst of packets. When packets are
> transmitted individually, that's about one packet (insert hand waving
> about scheduling delays, etc). but with wifi where you can transmit
> multiple packets in one airtime slot, you need enough buffer to handle
> the entire burst.


A different hand-wave: what about "packet trains"? They make using
queuing networks mis-estimate, do they come close together enough that
routers need to be sensitive to them, and affect the number of packets
they need to buffer?

--dave

--
David Collier-Brown,         | Always do right. This will gratify
System Programmer and Author | some people and astonish the rest
dave.collier-brown@indexexchange.com |              -- Mark Twain


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