#ls2 (irc2p) | #ls2 I2P Protocol Development Discussion - Next Meeting Monday, October 9th 6:30 UTC

RN does SAM get no indication of the requesting app?

RN just trying to understand

RN I would think once per app, but if SAM is blind then 1 sounds most logical to me

zzz yes RN, there's nothing in the protocol to identify it other than a username when auth is enabled

zzz eyedeekay, near the end of the meeting I said you probably want to do it later than the HELLO; I think that was bad advice

zzz agreed that at the HELLO (#1) is by far the cleanest and easiest

zzz zlatinb, good morning, ping re: SSU testnet

zlatinb zzz: ping

zlatinb what's up

zzz so

zzz as I said, 45 KBps, 0-hop, 25 msg delay, no drop

zzz nothing obvious, but shitloads of dup tx

zzz went back to SSU 1, same thing

zzz went back to 1.7.0 release, same thing

zzz you organized enough to find what your setup and results were for the last time you did SSU-only testing?

zlatinb hmm that doesn't sound right

zzz haven't looked too hard as to root cause, but it's stuck in fast retx mode

zlatinb I'll have to look on gitlab, I usually publish results there, but of the top of my head 0 hop without delay was 100+ Mbits

zlatinb 25ms delay was definitely more than 45kb

zzz not sure if it's a quirk of my test setup, which I'll explain here:

zzz 16 routers, same delay on all. Half floodfill, a couple firewalled

zzz all standard NTCP+SSU 1, except for two, which are my HTTP client and server: SSU 1/2 only

zzz the client and server are both 0-hop

zzz I'm getting about 10-15% retx at the SSU layer

zlatinb well lets try the simplest thing first:

zlatinb for i in $(seq 1 15); do lxc-attach i2p$i -- /sbin/tc qdisc del dev eth0 root; done

zzz for a 2 MB download, about 10,000 pkts, about 1000-1500 retx

zlatinb then see what you get, should max out the CPU and be in the 10+MB/s

zzz gotta fire it up for the day, no qdisc by default anyway

zzz no change with 0 delay

zlatinb then something isn't right

zlatinb time to enable debug logging ... :-/

zzz if pkts are dropping somewhere, I haven't found it yet

zlatinb last time I ran the benchmarks was before the changes to pass priority and switch to a priority codel queue

zlatinb is the rtt calculated correctly on the web console?

zzz yes

zzz I'm not seeing codel drops in any queue

zzz let me change from 0-hop to 3-hop which will put me closer to your setup

zlatinb it's harder to dig through logs of 3-hop tunnels

zlatinb with 0 hop you know exactly where to look

zzz just for a quick test

zzz 30 KBps

zlatinb still too low

zlatinb but not as drastically

zlatinb also keep an eye on cpu usage when doing the 0-hop test, it does max out my 8-core xeon

zlatinb zzz: also make sure you didn't by accident execute qdisc on your host laptop :)

zlatinb /sbin/tc qdisc ls

zzz no cpu problems at 45 KBps, verified qdisc not on host

zlatinb something else is happening because when I was doing the interop testing I was able to download at expected speeds between java and i2pd

zzz that was a udp-only test?

zlatinb the java node was udp-only, i2pd doesn't support such mode

zlatinb I could try SSU2 if you show me how to enable/force it

zzz no, I want to fix SSU 1 first

zlatinb did you ever change the bandwidth limits in the testnet?

zlatinb cause 45 sounds alwfully close to the very slow default

zzz oooh thats it

zzz 61 KBps out

zzz thanks, will reconfigure, retest, and report

zzz 0 hop: 1.25 MBps w/ 25 ms delay; 9.25 MBps w/ no delay

zlatinb that's more better

zzz 300 KBps w/ 25ms delay, 1% drop

zzz zero dup rx/tx at the SSU2 layer when no qdisc dropping

zlatinb 1 or 0.1? 1% is high

zzz it's zero-hop

zzz zlatinb or eyedeekay would you please bump that reddit thread about i2pd < 2.41 crashing, I think I'm about ready to throw this back on the live network

R4SAS zzz: just throw

eyedeekay I'll bump it anyway

zzz orignal, the problem was it trying to decode the "i" value in SSU? if we change it to "k" would that prevent the crashes?