3 ms·
How large do you want the switch to be? Where I am, if I download something form google drive, I get _major_ bufferbloat on the downstream, I suspect because ev
by namibj 8y ago
How large do you want the switch to be? Where I am, if I download something form google drive, I get _major_ bufferbloat on the downstream, I suspect because everthing except the last PHY link to my laptop (on a LAN port) handles at least 1Gbit, but the switch is still a little old-ish and won't do more than fast Ethernet.
Please, for god's sake, either drop packets or use fq-codel or something similar, but don't use a large-ish, blind fifo that only listens to his expelicit QOS settings.
I wan't my mosh session to be responsive even if there is a large _inbound_ filetransfer.
(note that this is textbook bufferbloat, just in the reverse direction from the usual residential situation)
- nvarsj 8y agoTo support a certain bandwidth on a switch you need big enough buffers. Bandwidth delay product is what you want - latency * bandwidth, you need a buffer of at least that size to support throughput in the system. Multiply that by the number of ports to support concurrent bandwidth. The toughswitches were engineered with very small buffers, such that they couldn't even support reasonable bandwidth on a LAN with low latency.