滴水穿石 - RPi vs i5-8250U

utarray benchmarking

Week48~52

小筆記

bazel installation on Raspberry Pi

Issue#1308

$ sudo apt-get install build-essential openjdk-8-jdk python zip unzip
$ wget https://github.com/bazelbuild/bazel/releases/download/0.19.2/bazel-0.19.2-dist.zip 
$ mkdir bazel-0.19.2 && unzip ./bazel-0.19.2-dist.zip -d bazel-0.19.2
$ cd bazel-0.19.2
$ env BAZEL_JAVAC_OPTS="-J-Xms384m -J-Xmx512m" bash ./compile.sh
🍃  Building Bazel from scratch......
🍃  Building Bazel with Bazel.
.WARNING: --batch mode is deprecated. Please instead explicitly shut down your Bazel server using the command "bazel shutdown".
INFO: Analysed target //src:bazel_nojdk (233 packages loaded, 10401 targets configured).

Workaround for VS Code middle click paste.

VS Code在Ubuntu裡滑鼠中鍵的複製貼上功能會造成看程式時的困擾
Issue#49305
It cause a problem when browsing source code in VS code, here is an alternative solution. Disable middle paste on Xubuntu 18.04

sam@sam-T480s:~$ xinput list
⎡ Virtual core pointer                          id=2    [master pointer  (3)]
⎜   ↳ Virtual core XTEST pointer                id=4    [slave  pointer  (2)]
⎜   ↳ ETPS/2 Elantech TrackPoint                id=12   [slave  pointer  (2)]
⎜   ↳ ETPS/2 Elantech Touchpad                  id=11   [slave  pointer  (2)]
⎣ Virtual core keyboard                         id=3    [master keyboard (2)]
    ↳ Virtual core XTEST keyboard               id=5    [slave  keyboard (3)]
    ↳ Power Button                              id=6    [slave  keyboard (3)]
    ↳ Video Bus                                 id=7    [slave  keyboard (3)]
    ↳ Sleep Button                              id=8    [slave  keyboard (3)]
    ↳ Integrated Camera: Integrated C           id=9    [slave  keyboard (3)]
    ↳ AT Translated Set 2 keyboard              id=10   [slave  keyboard (3)]
    ↳ ThinkPad Extra Buttons                    id=13   [slave  keyboard (3)]

sam@sam-T480s:~$ xinput get-button-map 12
1 2 3 4 5 6 7
sam@sam-T480s:~$ xinput set-button-map 12 1 0 3 4 5 6 7

Run it on boot

$ cat <<EOT > ~/bin/mouse_middle_disable.sh
#!/bin/bash
xinput set-button-map 12 1 0 3 4 5 6 7
exit 0
EOT

$ chmode a+x ~/bin/mouse_middle_disable.sh
// add the script to startup session. 
$ xfce4-session-settings

utarray benchmarking

Raspberry Pi 2 Model B
(Quad-core Cortex-A7 32bits, 976MB memory, CPU clock is between 600/900MHz)

Intel i5-8250U, Octa-core 64bits 24GB memory, CPU clock is between 400/3400MHz

Element size = 27 bytes

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