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hubris: network performance baseline 2026-05-14

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WAN 113/20 Mbit, vmbr0 intra-host ~34.7 Gbit/s, eno1 1G negotiated.
Flag: eno1 rx_errors at ~1.7% over 14d uptime — recheck trend.
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Claudio
2026-05-14 22:49:26 +02:00
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@@ -47,6 +47,19 @@ Host is dual-homed on LAN (`eno1`/`vmbr0`) and WiFi (`wlp3s0`) so management/SSH
- Failover verified 2026-04-28: `ip link set eno1 down` → outbound HTTP keeps working via WiFi; `ip link set eno1 up` → vmbr0 default restored.
- Reachable on `192.168.8.77` (LAN) and `192.168.8.141` (WiFi); SSH works on either.
## Network performance baseline (2026-05-14)
| Path | Throughput | Notes |
| ---- | ---------- | ----- |
| WAN (Ookla, from host) | ↓ 113.5 Mbit/s · ↑ 19.9 Mbit/s · 24.6 ms | Asymmetric residential link. 20 Mbit upload is the cap for public ingress (artifacto, blog via VPS traefik). |
| `eno1` link | 1000 Mbit/s, Full duplex | Negotiated correctly to router. |
| Host → LXC over `vmbr0` | **34.7 Gbit/s** | Single TCP stream, iperf3 10 s, 0 retransmits. |
| LXC → LXC over `vmbr0` | **34.8 Gbit/s** | Single TCP stream, iperf3 5 s, 0 retransmits. |
Intra-host throughput is memory-bandwidth bound — not a bottleneck for any current workload.
**eno1 error counters** (uptime 14 d 6 h at measurement time): `tx_packets` 99.99 M / `rx_packets` 96.08 M; `rx_errors` 1,619,203 (~1.7 % of RX); `align_errors` 10,919; `tx_errors` 20. The 1.6 M rx_errors in 14 days is the noteworthy datapoint — likely cable / switch-port. Re-check this counter in ~1 week and confirm it is not still climbing at the same rate; if it is, swap the patch cable first.
## Host services owned by external repos
| What | Repo | Path on host |
@@ -86,6 +99,9 @@ OpenSSH on `0.0.0.0:22`. Netbird's built-in SSH server is on `100.122.38.109:220
## Changelog
### 2026-05-14 — network performance baseline captured
First explicit speed snapshot: WAN ↓113.5 / ↑19.9 Mbit (24.6 ms), `eno1` 1 Gb full-duplex negotiated, intra-host `vmbr0` ~34.7 Gbit/s host↔LXC and ~34.8 Gbit/s LXC↔LXC (single TCP stream, zero retransmits). `iperf3` + `speedtest-cli` installed on host. Noted `eno1` `rx_errors` at 1.62 M (~1.7 % of 96 M RX packets in 14 d uptime) plus 10.9 k `align_errors` — flagged for follow-up; expect to recheck the trend in ~1 week, suspect patch cable / switch port first if still climbing. See new "Network performance baseline" section above.
### 2026-05-14 — LXC 116 (heaper) decommissioned
User destroyed the heaper LXC. No `116.conf.bak` left behind in `/etc/pve/lxc/`. Data subtree `/mnt/library/heaper` (224 MiB) retained for archaeology — see [containers/index](../containers/index.md#recently-destroyed-kept-for-archaeology) and [media-permissions](../infrastructure/media-permissions.md).