DEV Community: Kiet Nguyen

docker-sync performance in Apple M1

Kiet Nguyen — Mon, 20 Jun 2022 09:16:30 +0000

Syncing by docker-sync is still faster than running by native (out of the box)

Setup

Hardware

Apple M1 Pro
32GB
Monterey
"Enable VirtioFS accelerated directory sharing" experimental feature is checked

Docker for Mac (only)

Version: 4.9.1 (81317)
Memory: 8GB
CPUs: 5

Results

Native

docker run -it -v /tmp:/var/www alpine time dd if=/dev/zero of=/var/www/test.dat bs=1024 count=100000
100000+0 records in
100000+0 records out
real    0m 9.31s
user    0m 0.25s
sys     0m 3.91s

Docker-sync - Strategy: native_osx

git clone https://github.com/EugenMayer/docker-sync-boilerplate
cd docker-sync-boilerplate/default
# Set a custom image in docker-sync.yml
#    appcode-native-osx-sync:
# +    native_osx_image: eugenmayer/unison:2.51.3-4.12.0-ARM64
docker-sync-stack start

docker exec -it default-app-native-osx-1 time dd if=/dev/zero of=/var/www/test.dat bs=1024 count=100000
100000+0 records in
100000+0 records out
real    0m 0.35s
user    0m 0.03s
sys     0m 0.31s

Docker-Sync - Strategy: Unison

git clone https://github.com/EugenMayer/docker-sync-boilerplate
cd docker-sync-boilerplate/unison
# Set a custom image in docker-sync.yml
#    appcode-unison-sync: # tip: add -sync and you keep consistent names as a convention
#      src: './app'
#      sync_strategy: 'unison'
# +    unison_image: eugenmayer/unison:2.51.3-4.12.0-ARM64
docker-sync-stack start

docker exec -it unison-app-unison-1 time dd if=/dev/zero of=/var/www/test.dat bs=1024 count=100000
100000+0 records in
100000+0 records out
real    0m 0.31s
user    0m 0.03s
sys     0m 0.28s

References

wkhtmltoimage-binary and wkhtmltopdf-binary gems for ARM

Kiet Nguyen — Thu, 16 Jun 2022 13:13:58 +0000

Issue

Error below might occur when you have wkhtmltoimage-binary or wkhtmltopdf-binary gems while running ARM when Gemfile

qemu-x86_64: Could not open '/lib64/ld-linux-x86-64.so.2': No such file or directory

Workaround

Install OS dependencies
Download and install package from https://wkhtmltopdf.org/downloads.html
Remove above gem(s) from Gemfile

# ubuntu:20.04
export PLATFORM=$(dpkg --print-architecture)\
  && apt-get update\
  && apt-get install -y libfontenc1 xfonts-75dpi xfonts-base xfonts-encodings xfonts-utils\
  && wget --quiet https://github.com/wkhtmltopdf/packaging/releases/download/0.12.6-1/wkhtmltox_0.12.6-1.focal_${PLATFORM}.deb\
  && dpkg -i wkhtmltox_0.12.6-1.focal_${PLATFORM}.deb\
  && rm wkhtmltox_0.12.6-1.focal_${PLATFORM}.deb
  && rm -rf /var/lib/apt/lists/*\
  && apt-get purge --auto-remove\
  && apt-get clean

Get max memory size of V8

Kiet Nguyen — Fri, 10 Jun 2022 04:02:19 +0000

The default max memory size of V8 is 2GB:

$ node

> v8.getHeapStatistics()
{
  ....
  heap_size_limit: 2197815296,
  ...
}

2197815296 is 2GB in bytes. When set NODE_OPTIONS=--max_old_space_size=8192, heap_size_limit will be 8G or 8640266240 bytes.

$ NODE_OPTIONS=--max_old_space_size=8192 node

> v8.getHeapStatistics()
{
  ....
  heap_size_limit: 8640266240,
  ...
}