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Explore answers under 50 ms and says so in Server-Timing, measured by a test #10955
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torque/forge:torque/10946-explore-answers-under-50-ms-and-says-so → main 7 commits fork 2 threads · 2 unresolved
6 files
changed +101
−8
src/perf/budgets.ts +5
| @@ -12,6 +12,8 @@ export const BUDGETS: readonly Budget[] = [ | ||
| 12 | 12 | { pattern: "/", words: "home p95 under 800 ms warm", p95Ms: 800 }, |
| 13 | 13 | { pattern: "/boards", words: "boards p95 under 800 ms warm", p95Ms: 800 }, |
| 14 | 14 | { pattern: "/explore", words: "explore p95 under 800 ms warm", p95Ms: 800 }, |
| 15 | // The `read` phase of /explore's Server-Timing (#10946): a phase of that route, not a route; its p95 is the same read's. | |
| 16 | { pattern: "/explore#read", words: "the ranked explore read over 200 repositories p95 under 50 ms", p95Ms: 50 }, | |
| 15 | 17 | { pattern: "/api/v1/health", words: "health p95 under 100 ms", p95Ms: 100 }, |
| 16 | 18 | { pattern: "/:owner/:name", words: "repo page p95 under 800 ms warm", p95Ms: 800 }, |
| 17 | 19 | { pattern: "/:owner/:name/*", words: "repo sub-page p95 under 1000 ms warm", p95Ms: 1000 }, |
| @@ -45,3 +47,6 @@ export function gitBudgetFor(key: string): Budget { | ||
| 45 | 47 | |
| 46 | 48 | /** What a real visitor's page is held to (#10536): the browser's time to first byte at p95, and its largest paint at p95. */ |
| 47 | 49 | export const PAGE_BUDGET = { serverP95Ms: 150, paintP95Ms: 1000 } as const; |
| 50 | ||
| 51 | /** The ranked read behind /explore, /api/v1/explore and the MCP `explore` tool, as registered in BUDGETS. */ | |
| 52 | export const EXPLORE_READ_BUDGET: Budget = budgetFor("/explore#read")!; |
src/web/studio/explore.ts +1 −1
| @@ -146,7 +146,7 @@ export async function explorePage(ctx: Ctx): Promise<Response> { | ||
| 146 | 146 | const suggestion = exploreSuggestion(line); |
| 147 | 147 | const ranking = performance.now(); |
| 148 | 148 | const rows = await explore(ctx.app, ctx.auth.user, query); |
| 149 | notePhase(ctx.request, "rank", performance.now() - ranking); | |
| 149 | notePhase(ctx.request, "read", performance.now() - ranking); | |
| 150 | 150 | const rendering = performance.now(); |
| 151 | 151 | const kinds = [ |
| 152 | 152 | { label: "All", kind: "all" as const }, |
test/explore-budget.test.ts added +84
| @@ -0,0 +1,84 @@ | ||
| 1 | /** The ranked read behind explore answers under its budget over 200 repositories, and never shares a private row (#10946). */ | |
| 2 | import { afterAll, beforeAll, expect, test } from "bun:test"; | |
| 3 | import { mkdtemp, rm } from "node:fs/promises"; | |
| 4 | import { tmpdir } from "node:os"; | |
| 5 | import { join } from "node:path"; | |
| 6 | import { createApp, type App } from "../src/app.ts"; | |
| 7 | import { explore, parseExploreQuery } from "../src/actions/explore.ts"; | |
| 8 | import { createRepo } from "../src/actions/repos.ts"; | |
| 9 | import { createApp as insertApp } from "../src/core/apps.ts"; | |
| 10 | import { createUser, type User } from "../src/core/users.ts"; | |
| 11 | import { BUDGETS, budgetFor } from "../src/perf/budgets.ts"; | |
| 12 | import { quietLogs } from "./helpers/globals.ts"; | |
| 13 | ||
| 14 | quietLogs(); | |
| 15 | ||
| 16 | let dir: string; | |
| 17 | let app: App; | |
| 18 | let owner: User; | |
| 19 | let stranger: User; | |
| 20 | const all = parseExploreQuery(""); | |
| 21 | const budget = budgetFor("/explore#read")!; | |
| 22 | /** The best of a few reads, so one stall on a loaded machine is not a finding; a slow read is slow every time. */ | |
| 23 | async function best(read: () => Promise<unknown>, runs = 3) { | |
| 24 | let low = Infinity; | |
| 25 | for (let i = 0; i < runs; i++) { | |
| 26 | const t = performance.now(); | |
| 27 | await read(); | |
| 28 | low = Math.min(low, performance.now() - t); | |
| 29 | } | |
| 30 | return low; | |
| 31 | } | |
| 32 | ||
| 33 | async function person(username: string, admin: boolean) { | |
| 34 | const made = await createUser(app.db, { | |
| 35 | origin: "seed", trusted: true, username, email: `${username}@forge.local`, | |
| 36 | password: "a-good-passphrase", adminIfFirst: admin, | |
| 37 | }); | |
| 38 | if (!made.ok) throw new Error(String(made.error)); | |
| 39 | return made.value; | |
| 40 | } | |
| 41 | ||
| 42 | beforeAll(async () => { | |
| 43 | dir = await mkdtemp(join(tmpdir(), "forge-explore-budget-")); | |
| 44 | app = createApp({ dataDir: dir, port: 0 }); | |
| 45 | owner = await person("olive", true); | |
| 46 | stranger = await person("pablo", false); | |
| 47 | for (let i = 0; i < 200; i++) { | |
| 48 | const access = i % 4 === 0 ? "private" : "public"; | |
| 49 | const repo = await createRepo(app, owner, { name: `app-${i}`, visibility: access }); | |
| 50 | if (!repo.ok) throw new Error(String(repo.error)); | |
| 51 | const made = insertApp(app.db, { repoId: repo.value.id, slug: `olive-app-${i}`, access }); | |
outdated
Single wall-clock sample at the full 50 ms is a flake risk on a loaded check machine; take the best of a few reads or leave headroom. |
||
| 52 | if (!made.ok) throw new Error(made.error); | |
| 53 | } | |
| 54 | }, 300_000); | |
| 55 | afterAll(async () => { | |
| 56 | app.close(); | |
| 57 | await rm(dir, { recursive: true, force: true }); | |
| 58 | }); | |
| 59 | ||
| 60 | test("the ranked read over 200 repositories is under the registered budget", async () => { | |
| 61 | expect(BUDGETS).toContain(budget); | |
| 62 | expect(budget.p95Ms).toBe(50); | |
| 63 | const rows = await explore(app, stranger, all); | |
| 64 | expect(rows.length).toBeGreaterThan(40); | |
| 65 | // Different words rank afresh; the best of three of them is the read without a stall. | |
| 66 | const ms = await best(() => explore(app, stranger, parseExploreQuery(`kind:app sort:forks app-${Math.random()}`)), 3); | |
| 67 | expect(ms).toBeLessThan(budget.p95Ms); | |
| 68 | }); | |
| 69 | ||
| 70 | test("a read is under the budget for every sort", async () => { | |
| 71 | for (const sort of ["score", "forks", "ships", "likes", "use", "fresh", "name"]) { | |
| 72 | const q = parseExploreQuery(`kind:app sort:${sort}`); | |
| 73 | expect(await best(() => explore(app, stranger, q))).toBeLessThan(budget.p95Ms); | |
| 74 | } | |
| 75 | }); | |
| 76 | ||
| 77 | test("a private app is not shown to another viewer after the owner's read is warm", async () => { | |
| 78 | await explore(app, owner, all); | |
| 79 | const mine = (await explore(app, owner, all)).map((r) => r.name); | |
| 80 | const theirs = (await explore(app, stranger, all)).map((r) => r.name); | |
| 81 | expect(mine).toContain("olive/app-0"); | |
| 82 | expect(theirs).not.toContain("olive/app-0"); | |
| 83 | expect((await explore(app, undefined, all)).map((r) => r.name)).not.toContain("olive/app-0"); | |
| 84 | }); |
test/explore-timing.test.ts +3 −3
| @@ -1,4 +1,4 @@ | ||
| 1 | /** `/explore`'s Server-Timing names its phases: session, rank, render (#3230). */ | |
| 1 | /** `/explore`'s Server-Timing names its phases: session, read, render (#3230). */ | |
| 2 | 2 | import { afterAll, beforeAll, expect, test } from "bun:test"; |
| 3 | 3 | import { snappyFixture, type SnappyFixture } from "../bench/snappy.ts"; |
| 4 | 4 | |
| @@ -12,12 +12,12 @@ afterAll(async () => { | ||
| 12 | 12 | }); |
| 13 | 13 | |
| 14 | 14 | for (const path of ["/explore", "/explore?q=" + encodeURIComponent("kind:app sort:forks")]) { |
| 15 | test(`GET ${path} names session, rank and render beside the route total`, async () => { | |
| 15 | test(`GET ${path} names session, read and render beside the route total`, async () => { | |
| 16 | 16 | const res = await fetch(`${f.base}${path}`); |
| 17 | 17 | await res.arrayBuffer(); |
| 18 | 18 | expect(res.status).toBe(200); |
| 19 | 19 | const parts = (res.headers.get("server-timing") ?? "").split(", "); |
| 20 | for (const name of ["app", "session", "rank", "render"]) | |
| 20 | for (const name of ["app", "session", "read", "render"]) | |
| 21 | 21 | expect(parts.find((p) => p.startsWith(`${name};`))).toMatch(/^[a-z]+;dur=\d+\.\d$/); |
| 22 | 22 | }); |
| 23 | 23 | } |
test/mcp-system-stalls.test.ts +2 −2
| @@ -34,8 +34,8 @@ afterAll(async () => { | ||
| 34 | 34 | }); |
| 35 | 35 | |
| 36 | 36 | test("a stall under a named job is read through system, at most 10, most ms first", async () => { |
| 37 | // Let every request other tests in this process finished fall outside the 300 ms window, so only the job ran across it. | |
| 38 | await Bun.sleep(320); | |
| 37 | // A stall is blamed on a request first: let any request an earlier file in this process ran fall out of the stall's window. | |
| 38 | await Bun.sleep(400); | |
| 39 | 39 | during("test-job-10907", () => 1); |
| 40 | 40 | loopWatch.stalled(300, performance.now()); |
| 41 | 41 | const res = await fetch(`${servers.url}/mcp`, { |
test/mcp-write-scope.test.ts +6 −2
| @@ -42,6 +42,11 @@ const ADMIN_ARGS: Record<string, Record<string, unknown>> = { | ||
| 42 | 42 | rollback: { sha: "a".repeat(40), dryRun: false }, |
| 43 | 43 | }; |
| 44 | 44 | |
| 45 | /** Valid arguments for a tool whose write is one call among reads and plans (`readsWhen`): the generic arguments would only read. */ | |
| 46 | const WRITE_ARGS: Record<string, Record<string, unknown>> = { | |
| 47 | flow: { kind: "drift", action: "update", repo: "alice/game", pull: 1 }, | |
| 48 | }; | |
| 49 | ||
| 45 | 50 | /** What `visible()` answers for a tool the token's scope does not open. */ |
| 46 | 51 | const notListed = (body: any): boolean => |
| 47 | 52 | body.error?.code === -32602 && String(body.error.message).startsWith("no tool named"); |
| @@ -99,8 +104,7 @@ describe("a token that may only read cannot write through any tool", () => { | ||
| 99 | 104 | /** Minimal arguments that make the call a real write, not a plan or a list. */ |
| 100 | 105 | const writing = (t: ReturnType<typeof toolRegistry>[number]) => { |
| 101 | 106 | if (t.name in ADMIN_ARGS) return ADMIN_ARGS[t.name]!; |
| 102 | // `flow` reads unless it is asked to update a drifting pull (#10959). | |
| 103 | if (t.name === "flow") return { action: "update", kind: "drift", repo: "alice/game", pull: 1 }; | |
| 107 | if (t.name in WRITE_ARGS) return WRITE_ARGS[t.name]!; | |
| 104 | 108 | const args: Record<string, unknown> = { dryRun: false, action: "x" }; |
| 105 | 109 | if (t.readsWithout !== undefined) args[[t.readsWithout].flat()[0]!] = "x"; |
| 106 | 110 | return args; |
Not registered: BUDGETS already has {pattern:"/explore", p95Ms:800}; this duplicate is read by nobody but the test. Add the entry to BUDGETS with a pattern that does not collide, and import it from there. Also 'p95Ms' for a cold single read is a misnomer.