fix wrong start duration

vercel · Oct 6, 2023 · d37fa9a · d37fa9a
1 parent 2af1e78
commit d37fa9a
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Showing 4 changed files with 16 additions and 5 deletions.
diff --git a/packages/next/src/bin/next.ts b/packages/next/src/bin/next.ts
@@ -1,4 +1,5 @@
 #!/usr/bin/env node
+performance.mark('next-start')
 import '../server/require-hook'
 import * as log from '../build/output/log'
 import arg from 'next/dist/compiled/arg/index.js'

diff --git a/packages/next/src/build/utils.ts b/packages/next/src/build/utils.ts
@@ -1927,7 +1927,8 @@ export async function copyTracedFiles(
     serverOutputPath,
     `${
       moduleType
-        ? `import path from 'path'
+        ? `performance.mark('next-start');
+import path from 'path'
 import { fileURLToPath } from 'url'
 import module from 'module'
 const require = module.createRequire(import.meta.url)

diff --git a/packages/next/src/cli/next-start.ts b/packages/next/src/cli/next-start.ts
@@ -1,5 +1,4 @@
 #!/usr/bin/env node
-
 import '../server/lib/cpu-profile'
 import { startServer } from '../server/lib/start-server'
 import { getPort, printAndExit } from '../server/lib/utils'

diff --git a/packages/next/src/server/lib/start-server.ts b/packages/next/src/server/lib/start-server.ts
@@ -1,3 +1,6 @@
+if (performance.getEntriesByName('next-start').length === 0) {
+  performance.mark('next-start')
+}
 import '../next'
 import '../node-polyfill-fetch'
 import '../require-hook'
@@ -130,7 +133,6 @@ export async function startServer({
   envInfo,
   expFeatureInfo,
 }: StartServerOptions): Promise<void> {
-  const startServerProcessStartTime = Date.now()
   let handlersReady = () => {}
   let handlersError = () => {}
 
@@ -296,8 +298,16 @@ export async function startServer({
         requestHandler = initResult[0]
         upgradeHandler = initResult[1]
 
-        const startServerProcessDuration =
-          Date.now() - startServerProcessStartTime
+        let startServerProcessDuration =
+          performance.mark('next-start-end') &&
+          performance.measure(
+            'next-start-duration',
+            'next-start',
+            'next-start-end'
+          ).duration
+
+        startServerProcessDuration = Math.round(startServerProcessDuration)
+
         const formatDurationText =
           startServerProcessDuration > 2000
             ? `${Math.round(startServerProcessDuration / 100) / 10}s`