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fix(gateway): wake a sandbox on disk again - #385
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A sandbox on disk has no namespace, and its address falls on the node's unreachable floor, so a connection to it fails with "no route to host". The gateway took that as cold and woke it until #365, which woke only on a refusal; since then every request to a sandbox on disk was answered 502 at once and the sandbox was never woken. In the fleet's traffic runs that was 67-79% of requests, against 1-2.5% at 872682b. The gateway now wakes on a refusal or on no route (proxy::is_cold). The E2B front door keeps is_refused: there an unreachable address is a node that cannot be reached, not a sandbox asleep. Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
WaylandYang
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Oct 30, 2026
…-30 results (#388) * bench: start times on the six 2-core, 2 GB nodes with the new build, replacing the one-VM table Every runtime started one at a time on each of six cloud nodes, the median of their p50s, drawn by bench/baremetal/charts.py. charts.py for the fleet now reads a round's layout from its builds.json, so a new round can be drawn without renaming its directories; 2026-10-28 draws unchanged. Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com> * docs(readme): badges as files in the repo, and the backend described as each node's own GitHub's image proxy would not show the shields.io badges with an embedded logo; the same SVGs are now in docs/assets/badges. Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com> * docs(readme): shorter, one chart, and only numbers from this round The figures and tables measured before #376, #380 and #385 go, the capacity headline with them until the fills are rerun. bench/fleet/results/2026-10-30 holds the traffic, wake, herd and wall runs on the six nodes. Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com> * docs(readme): console screenshots of the current console Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com> --------- Co-authored-by: Claude Opus 5.5 <noreply@anthropic.com>
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问题
落盘（Snapshot 档位）的沙箱收到请求时，gateway 直接回 502，沙箱再也不会被唤醒。
舰队流量测试（每节点 40 个 app64，1-8 req/s）里 67-79% 的请求失败，而 872682b 是 1-2.5%。
原因
落盘沙箱没有 namespace，它的地址落在节点的 unreachable 兜底路由上，连接返回
No route to host。872682b 的 gateway 遇到任何连接错误都会唤醒；#365 改成了只在ConnectionRefused时唤醒，这种情况就成了 502。net.rs的注释仍然写着 gateway 会把它当成冷沙箱，但没有测试覆盖。修复
新增
proxy::is_cold：refused（冻结沙箱，#327 的 REJECT）或没有路由（落盘沙箱）都算冷，gateway 全部改用它。E2B 入口（front.rs）保持is_refused：那里连的是节点，不可达说明节点有问题，不是沙箱睡着了。验证
a_sandbox_on_disk_is_cold。真实的"无路由"需要 root 才能造出来，所以测的是错误分类。snapshot档位后发请求，返回 200，152 ms，其中唤醒 138 ms。修复前同样的请求是 0.8 ms 的 502。🤖 Generated with Claude Code