On Sat, Oct 13, 2018 at 05:23:35PM -0700, Dave Taht wrote:
On Sat, Oct 13, 2018 at 9:26 AM Justin Kilpatrick <[email protected]> wrote:
> > On Sat, Oct 13, 2018 at 12:01:54AM -0700, Dave Taht wrote: > I get that bandwidth figure a lot for wireguard. I care about latency > far, far more under a full bidirectional load. Having got base wifi so > much better, and the edge connections sqm-scripts massively better, I > am wondering if wireguard got on the stick yet?
> I wrote about this problem in an early version of wireguard here: > http://blog.cerowrt.org/post/wireguard/
> As of kernel 4.4 (?) ipsec does take advantage of the fq_codel hash. > the before latency was 100+ms in the tunnel for voip, 2ms after.
This is what happens for icmp6 for me before during and after an iperf with 5 concurrent streams over a connection using one wifi mesh-hop and one wireguard-vpn hopI can confirm that fq_codel works with Wireguard tunnels just fine. The latency added by a tunneled hop is around 1-2ms.that is not a possible result. The classic simplest bufferbloat test is start a ping, then do a big 60 sec upload or download from a server on the other side of that link. Over wifi that's a minimum resulting delay of 10ms, closer to 20, nowadays. about 2 over cake on ethernet. but: Over the wireguard tunnel I tested 2 years or so back, 150ms induced delay. from tcp on an openwrt router, it's probable that the pacing_rate bug still exists which means it's tcp can't flood the link - which is a good thing in this case but... users aren't on the routers. users don't just ping or download or upload once at a time.
Bytes from 2a06:8187:fbab:1::9000:2: icmp_seq=212 ttl=62 time=38.0 ms 64 bytes from 2a06:8187:fbab:1::9000:2: icmp_seq=213 ttl=62 time=30.8 ms 64 bytes from 2a06:8187:fbab:1::9000:2: icmp_seq=214 ttl=62 time=31.5 ms 64 bytes from 2a06:8187:fbab:1::9000:2: icmp_seq=215 ttl=62 time=37.2 ms 64 bytes from 2a06:8187:fbab:1::9000:2: icmp_seq=216 ttl=62 time=31.5 ms 64 bytes from 2a06:8187:fbab:1::9000:2: icmp_seq=217 ttl=62 time=32.7 ms 64 bytes from 2a06:8187:fbab:1::9000:2: icmp_seq=218 ttl=62 time=33.0 ms 64 bytes from 2a06:8187:fbab:1::9000:2: icmp_seq=219 ttl=62 time=32.1 ms 64 bytes from 2a06:8187:fbab:1::9000:2: icmp_seq=220 ttl=62 time=31.8 ms 64 bytes from 2a06:8187:fbab:1::9000:2: icmp_seq=221 ttl=62 time=53.2 ms 64 bytes from 2a06:8187:fbab:1::9000:2: icmp_seq=222 ttl=62 time=82.8 ms 64 bytes from 2a06:8187:fbab:1::9000:2: icmp_seq=223 ttl=62 time=57.5 ms 64 bytes from 2a06:8187:fbab:1::9000:2: icmp_seq=224 ttl=62 time=32.2 ms 64 bytes from 2a06:8187:fbab:1::9000:2: icmp_seq=225 ttl=62 time=29.8 ms 64 bytes from 2a06:8187:fbab:1::9000:2: icmp_seq=226 ttl=62 time=247 ms 64 bytes from 2a06:8187:fbab:1::9000:2: icmp_seq=227 ttl=62 time=222 ms 64 bytes from 2a06:8187:fbab:1::9000:2: icmp_seq=228 ttl=62 time=245 ms 64 bytes from 2a06:8187:fbab:1::9000:2: icmp_seq=229 ttl=62 time=325 ms 64 bytes from 2a06:8187:fbab:1::9000:2: icmp_seq=230 ttl=62 time=252 ms 64 bytes from 2a06:8187:fbab:1::9000:2: icmp_seq=231 ttl=62 time=262 ms 64 bytes from 2a06:8187:fbab:1::9000:2: icmp_seq=232 ttl=62 time=261 ms 64 bytes from 2a06:8187:fbab:1::9000:2: icmp_seq=233 ttl=62 time=342 ms 64 bytes from 2a06:8187:fbab:1::9000:2: icmp_seq=234 ttl=62 time=386 ms 64 bytes from 2a06:8187:fbab:1::9000:2: icmp_seq=235 ttl=62 time=422 ms 64 bytes from 2a06:8187:fbab:1::9000:2: icmp_seq=236 ttl=62 time=178 ms 64 bytes from 2a06:8187:fbab:1::9000:2: icmp_seq=237 ttl=62 time=29.9 ms 64 bytes from 2a06:8187:fbab:1::9000:2: icmp_seq=238 ttl=62 time=32.3 ms 64 bytes from 2a06:8187:fbab:1::9000:2: icmp_seq=239 ttl=62 time=34.8 ms 64 bytes from 2a06:8187:fbab:1::9000:2: icmp_seq=240 ttl=62 time=31.0 ms 64 bytes from 2a06:8187:fbab:1::9000:2: icmp_seq=241 ttl=62 time=39.2 ms 64 bytes from 2a06:8187:fbab:1::9000:2: icmp_seq=242 ttl=62 time=40.2 ms 64 bytes from 2a06:8187:fbab:1::9000:2: icmp_seq=243 ttl=62 time=54.3 ms 64 bytes from 2a06:8187:fbab:1::9000:2: icmp_seq=244 ttl=62 time=73.5 ms 64 bytes from 2a06:8187:fbab:1::9000:2: icmp_seq=245 ttl=62 time=58.6 ms 64 bytes from 2a06:8187:fbab:1::9000:2: icmp_seq=246 ttl=62 time=59.0 ms 64 bytes from 2a06:8187:fbab:1::9000:2: icmp_seq=247 ttl=62 time=228 ms 64 bytes from 2a06:8187:fbab:1::9000:2: icmp_seq=248 ttl=62 time=108 ms 64 bytes from 2a06:8187:fbab:1::9000:2: icmp_seq=249 ttl=62 time=63.6 ms
Here's some iperf data, but not as latency focused as you would probably like.nope. also udp fragmenting is iperf's default mode.https://forum.altheamesh.com/t/althea-performance/44/3
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