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Extremely slow on FAT partitions (Win 10 x64) #1394

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eGust opened this issue May 19, 2018 · 2 comments
Closed

Extremely slow on FAT partitions (Win 10 x64) #1394

eGust opened this issue May 19, 2018 · 2 comments
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🐛 Bug ✔️ Confirmed Bug

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@eGust
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eGust commented May 19, 2018

🐛 bug report

🎛 Configuration (.babelrc, package.json, cli command)

package.json

{
  "name": "test_parcel_vue",
  "version": "1.0.0",
  "author": "eGust",
  "license": "MIT",
  "scripts": {
    "dev": "parcel src/index.html"
  },
  "dependencies": {
    "vue": "^2.5.16"
  },
  "devDependencies": {
    "@vue/component-compiler-utils": "^1.2.1",
    "parcel": "^1.8.1",
    "pug": "^2.0.3",
    "stylus": "^0.54.5",
    "vue-hot-reload-api": "^2.3.0",
    "vue-template-compiler": "^2.5.16"
  }
}

🤔 Expected Behavior

parcel src/index.html should build in a few seconds.

😯 Current Behavior

It will take more than 30s for first build on my exFAT partition. Once the server had started, the first time rebuild is also slow (~10s), the next will be normal (~200ms for the small demo).

I tried the same code on NTFS it usually took ~7s which is acceptable.

I created FAT/FAT32/exFAT/NTFS ramdisks on Win10. This issue is reproducable on all FAT formats.

I also created a vfat ramdisk on Ubuntu. parcel src/index.html finished in 4s.

About parcel build src/index.js

I also tried parcel build src/index.js on exFAT and NTFS.

exFAT

$ rm -rf .cache/ && time parcel build src/index.js
√  Built in 5.94s.

dist\index.js     63.55 KB    8.54s
dist\index.css        43 B    4.88s
dist\index.map         0 B    8.65s

real    0m7.066s
user    0m0.015s
sys     0m0.242s

NTFS

$ rm -rf .cache/ && time parcel build src/index.js
√  Built in 4.81s.

dist\index.js     63.56 KB    6.43s
dist\index.css        43 B    3.75s
dist\index.map         0 B    6.53s

real    0m5.998s
user    0m0.076s
sys     0m0.196s

💁 Possible Solution

🔦 Context

Steps to reproduce:

  1. Create a ramdisk on Windows: imdisk -a -s 256M -o rem -m R: -p "/FS:FAT32 /Q /Y"
  2. Make a dir and create/copy all 4 files into it.
  3. yarn install and yarn dev to execute parcel src/index.html

💻 Code Sample

src/App.vue

<template lang="pug">
  #app Vue Parcel
</template>

<script>
export default {
  name: 'App',
};
</script>

<style lang="stylus">
*
  box-sizing border-box
</style>

src/index.html

<!DOCTYPE html>
<html>
  <head>
    <meta charset="utf-8">
    <meta name="viewport" content="width=device-width,initial-scale=1.0">
    <title>Vue Parcel</title>
  </head>
  <body>
    <div id="app"></div>
    <script src="./index.js"></script>
  </body>
</html>

src/index.js

import Vue from 'vue';
import App from './App';

new Vue({
  el: '#app',
  render: h => h(App),
});

🌍 Your Environment

Software Version(s)
Parcel 1.8.1
Node 8.11.1
npm/Yarn yarn v1.6.0
Operating System Win 10.0.17134.48 x64
@DeMoorJasper
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DeMoorJasper commented May 19, 2018 •
edited
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Could you try: #1368 , this should resolve your issue

I've experienced the same issue on windows several times (using ntfs on an m2 SSD)

@DeMoorJasper DeMoorJasper mentioned this issue May 19, 2018
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@eGust
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eGust commented May 19, 2018

@DeMoorJasper I checked out feature/chokidar-worker. Now it takes ~4s to build my simple demo. Thanks.

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