Make workspace tab switching faster (#1251)

* Avoid workspace shell renders when toggling sidebar * Avoid rerendering inactive workspace screens * Avoid rerendering unchanged sidebar rows * Keep sidebar selection state in the list * Speed up workspace tab switching
2026-05-31 15:46:17 +08:00
parent 67133e3ebc
commit f26a81798b
12 changed files with 909 additions and 323 deletions
@@ -0,0 +1,172 @@
+import { execFileSync } from "node:child_process";
+import { dirname, resolve } from "node:path";
+import { fileURLToPath } from "node:url";
+import { chromium } from "playwright";
+
+const repoRoot = resolve(dirname(fileURLToPath(import.meta.url)), "../../..");
+
+const baseUrl = process.env.PASEO_PROFILE_APP_URL ?? "http://localhost:19010";
+const serverId = requiredEnv("PASEO_PROFILE_SERVER_ID");
+const workspaceId = requiredEnv("PASEO_PROFILE_WORKSPACE_ID");
+const agentId = requiredEnv("PASEO_PROFILE_AGENT_ID");
+const switchCount = Number(process.env.PASEO_PROFILE_SWITCH_COUNT ?? 6);
+const switchWaitMs = Number(process.env.PASEO_PROFILE_SWITCH_WAIT_MS ?? 250);
+const idleWaitMs = Number(process.env.PASEO_PROFILE_IDLE_WAIT_MS ?? 0);
+const dumpCommits = process.env.PASEO_PROFILE_DUMP_COMMITS === "1";
+
+function requiredEnv(name) {
+  const value = process.env[name]?.trim();
+  if (!value) {
+    throw new Error(`${name} is required`);
+  }
+  return value;
+}
+
+function createTerminal() {
+  const output = execFileSync(
+    "npm",
+    [
+      "run",
+      "cli",
+      "--",
+      "terminal",
+      "create",
+      "--cwd",
+      workspaceId,
+      "--name",
+      "Tab Switch Profile",
+      "--json",
+    ],
+    { cwd: repoRoot, encoding: "utf8" },
+  );
+  const match = output.match(/\{[\s\S]*\}/);
+  if (!match) {
+    throw new Error(`Could not parse terminal create output: ${output}`);
+  }
+  return JSON.parse(match[0]).id;
+}
+
+function killTerminal(terminalId) {
+  execFileSync("npm", ["run", "cli", "--", "terminal", "kill", terminalId], {
+    cwd: repoRoot,
+    encoding: "utf8",
+  });
+}
+
+const createdTerminalId = process.env.PASEO_PROFILE_TERMINAL_ID ? null : createTerminal();
+const terminalId = process.env.PASEO_PROFILE_TERMINAL_ID ?? createdTerminalId;
+const workspaceSegment = `b64_${Buffer.from(workspaceId, "utf8").toString("base64url")}`;
+const workspaceUrl = `${baseUrl}/h/${serverId}/workspace/${workspaceSegment}`;
+
+function tabTestId(kind, id) {
+  return `workspace-tab-${kind}_${id}`;
+}
+
+function summarize(samples) {
+  const byId = new Map();
+  for (const sample of samples) {
+    const current = byId.get(sample.id) ?? {
+      renders: 0,
+      actualDuration: 0,
+      baseDuration: 0,
+    };
+    current.renders += 1;
+    current.actualDuration += sample.actualDuration;
+    current.baseDuration += sample.baseDuration;
+    byId.set(sample.id, current);
+  }
+  return [...byId.entries()]
+    .map(([id, value]) => Object.assign({ id }, value))
+    .sort((left, right) => right.actualDuration - left.actualDuration);
+}
+
+function summarizeCommits(samples) {
+  const byCommit = new Map();
+  for (const sample of samples) {
+    const key = String(sample.commitTime);
+    const current = byCommit.get(key) ?? {
+      commitTime: sample.commitTime,
+      totalActualDuration: 0,
+      samples: [],
+    };
+    current.totalActualDuration += sample.actualDuration;
+    current.samples.push({
+      id: sample.id,
+      actualDuration: sample.actualDuration,
+      baseDuration: sample.baseDuration,
+    });
+    byCommit.set(key, current);
+  }
+
+  return [...byCommit.values()].sort((left, right) => left.commitTime - right.commitTime);
+}
+
+async function openIntent(page, value) {
+  const url = `${workspaceUrl}?renderProfile=1&open=${encodeURIComponent(value)}`;
+  await page.goto(url, { waitUntil: "domcontentloaded" });
+  await page.getByTestId("workspace-tabs-row").waitFor({ timeout: 60_000 });
+}
+
+async function clickTab(page, testId) {
+  await page.getByTestId(testId).click();
+  await page.waitForTimeout(switchWaitMs);
+}
+
+async function main() {
+  const browser = await chromium.launch({ headless: true });
+  const page = await browser.newPage({ viewport: { width: 1280, height: 900 } });
+
+  try {
+    await openIntent(page, `agent:${agentId}`);
+    await openIntent(page, `terminal:${terminalId}`);
+
+    const agentTab = tabTestId("agent", agentId);
+    const terminalTab = tabTestId("terminal", terminalId);
+    await page.getByTestId(agentTab).waitFor({ timeout: 60_000 });
+    await page.getByTestId(terminalTab).waitFor({ timeout: 60_000 });
+
+    await clickTab(page, agentTab);
+    await clickTab(page, terminalTab);
+    await page.waitForTimeout(500);
+    await page.evaluate(() => globalThis.__PASEO_RESET_RENDER_PROFILE__?.());
+
+    if (idleWaitMs > 0) {
+      await page.waitForTimeout(idleWaitMs);
+    }
+
+    for (let index = 0; index < switchCount; index += 1) {
+      await clickTab(page, agentTab);
+      await clickTab(page, terminalTab);
+    }
+
+    const samples = await page.evaluate(() => globalThis.__PASEO_RENDER_PROFILE__ ?? []);
+    const reasons = await page.evaluate(() => globalThis.__PASEO_RENDER_PROFILE_REASONS__ ?? {});
+    console.log(
+      JSON.stringify(
+        {
+          appUrl: baseUrl,
+          serverId,
+          workspaceId,
+          agentId,
+          terminalId,
+          switchCount,
+          switchWaitMs,
+          idleWaitMs,
+          samples: samples.length,
+          summary: summarize(samples),
+          reasons,
+          commits: dumpCommits ? summarizeCommits(samples) : undefined,
+        },
+        null,
+        2,
+      ),
+    );
+  } finally {
+    await browser.close();
+    if (createdTerminalId) {
+      killTerminal(createdTerminalId);
+    }
+  }
+}
+
+await main();