G’Day folks, Long time lurker. I’ve been using Cero for my home router for quite a while now, with reasonable results (modulo bloody OSX wifi stuffola).
I’m running into issues doing zfs send/receive over ssh across a (mostly)
internet2 backbone between Cornell (where I work) and West Virginia University
(where we have a collaborator on a DOE sponsored project. Both ends are linux
machines running fq_codel configured like so:
tc qdisc
qdisc fq_codel 0: dev eth0 root refcnt 2 limit 10240p flows 1024
quantum 1514 target 5.0ms interval 100.0ms ecn
I stumbled across hpn-ssh <https://www.psc.edu/index.php/hpn-ssh> and — of
particular interest to this group — their page on tuning TCP parameters:
<http://www.psc.edu/index.php/networking/641-tcp-tune>
N.B. their advice to increase buffer size…
I’m curious, what part (if any) of that advice survives with fq_codel running
on both ends?
Any advice from the experts here would be gratefully received!
(And thanks for all of your collective and individual efforts!)
Cheers,
Frank Horowitz
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