VMware CPU usage is high when I start adb on ubuntu guest

Message from https://communities.vmware.com/thread/505263?start=15&tstart=0
HoboJ Aug 27, 2015 8:38 PM

 I'd like to confirm that this issue exists too. I have Workstation PRO 12 installed on Windows 10, running a Ubuntu 14.04.03 VM. After booting the VM the host machine will show 0% CPU utilization in task manager (for VMware Workstation (32bit)), but if I execute "adb devices" (which also starts the adb server) in the VM the CPU utilization on the host machine starts to slowly increase and after some time the VM becomes unusable. However, if I execute "adb kill-server" before the VM fully hangs, the host CPU utilization drops back to 0%. Note that the high CPU utilization is seen on the host machine, not on the VM after running the "adb devices" command.

Explanation from VMware: (This issue was solved in VMware Workstation 12 Pro Version 12.1.1)
  Starting an ADB daemon in an Ubuntu or Debian guest operating system causes a memory leak, which in turn causes the VMware Workstation window to become less responsive over time.

Refer to:
  1. https://communities.vmware.com/thread/505263
  2. https://communities.vmware.com/thread/505263?start=15&tstart=0
  3. https://docs.vmware.com/en/VMware-Workstation-Pro/12.0/rn/workstation-1211-release-notes.html

How can I connect to Android with ADB over TCPIP?

1. Activate debug mode in Android

2. Connect to pc via USB

3. Get Android Devices' IP address

4. Open Terminal and type ...

adb tcpip 5555
adb connect <device IP>:5555

5. Disconnect USB
6. Now your adb connection is over TCPIP
7. Return adb over USB

adb usb

8. Now your adb connection is over USB

Refer to:
  https://stackoverflow.com/questions/2604727/how-can-i-connect-to-android-with-adb-over-tcp

Bridge wifi to VMware Guest OS

1. Edit / Virtual Network Editor

2. Edit / Virtual Network Editor / Change Setting

3. Select VMnet0 and Click Automatic Setting, Deselect all of Wi-Fi

4. Add Network -- VMnet2 and bind to Wifi

5. Added Network Adapter 2 and bind to VMnet2

Refer to:
 1. https://www.vmware.com/support/ws55/doc/ws_net_configurations_changing_bridged_windows.html

Raspberry Pi install chinese input and font

1. Config locale

sudo raspi-config

2. Select "Internationalisation Options"
3. Select "Change Locale"
4. Select "en_US.UTF-8" & "zh_TW.UTF-8", and Press "OK"
5. Select "en_US.UTF-8"  or  "zh_TW.UTF-8"  for console
6. Install 酷音中文輸入法

sudo apt-get install scim-chewing

7.  Install 文泉驛微米黑, 文泉驛正黑, 文泉驛點陣宋體 中文字型

sudo apt-get install ttf-wgy-microhei ttf-wgy-zenhei xfonts-wgy

8. Restart


Refer to:
https://blog.gtwang.org/iot/raspberry-pi-chinese-input-method/

Installing Raspberry Pi Image

1. Format SD card to FAT32
2. Download NOOBS from https://www.raspberrypi.org/downloads/
3. Unzipped NOOBS and copy all files to SD root directory
4. Boot Raspberry Pi with SD card
5. Select Raspbian image to install in SD card

“adb devices” command won't detect any android devices

Step 1. Find vendor ID by using "lsusb"
Step 2. Add vendor Id to ~/.android/adb_usb.ini
Step 3. Restart adb
Step 4. Test. Open a terminal to run "sudo adb logcat". Open another terminal to run "sudo adb devices"

Vim Plugin Howto: NERDTree

1. NERDTree
  a. ":NERDTree" to open NERD Tree in vim
  b. "Up" : to move up cursor
  c. "Down" : to move down cursor
  d. "Enter" : to open a directory
  e. "o": to open a file
  e. "H" :to show or hide hidden files
  f. "R" : Refresh the tree, useful if files change outside of Vim
  h. "m" : show the NERD Tree menu
  i. "?" : NERD Tree quick help
  j. ":q" : exit 



Refer to:
  https://medium.com/usevim/nerd-tree-guide-bb22c803dcd2



2. CScope

1. Run cscope

cscope -R -b

2. 

 Ctrl-]  : split horizontal pane (editing new buffer)

 Ctrl-w s or ":spit" : split horizontal pane (editing current buffer)

 Ctrl-w v or ":vsplit" : split vertical pane (editing current buffer)

Refer to:

  1. https://a0gustinus.wordpress.com/2013/06/01/browsing-source-code-in-linux-vimcscope/
  2. https://dougblack.io/words/a-good-vimrc.html

vim plugin manager : vim-plug

1. Automatic Installation (load plug.vim to ~/.vim/autoload/plug.vim )

Place the following code in your .vimrc before plug#begin() call

if empty(glob('~/.vim/autoload/plug.vim'))
  silent !curl -fLo ~/.vim/autoload/plug.vim --create-dirs
    \ https://raw.githubusercontent.com/junegunn/vim-plug/master/plug.vim
  autocmd VimEnter * PlugInstall --sync | source $MYVIMRC
endif

Note that --sync flag is used to block the execution until the installer finishes.

2. Migrating from other plugin managers

Download plug.vim in autoload directory

curl -fLo ~/.vim/autoload/plug.vim --create-dirs \
    https://raw.githubusercontent.com/junegunn/vim-plug/master/plug.vim

and update your .vimrc as needed.

With Vundle.vim	Equivalent vim-plug configuration
filetype off set rtp+=~/.vim/bundle/Vundle.vim call vundle#begin() Plugin 'VundleVim/Vundle.vim' Plugin 'junegunn/seoul256.vim' Plugin 'junegunn/goyo.vim' Plugin 'junegunn/limelight.vim' call vundle#end() filetype plugin indent on syntax enable	call plug#begin('~/.vim/plugged') Plug 'junegunn/seoul256.vim' Plug 'junegunn/goyo.vim' Plug 'junegunn/limelight.vim' call plug#end()

vim-plug does not require any extra statement other than plug#begin() and plug#end(). You can remove filetype off, filetype plugin indent on and syntax on from your .vimrc as they are automatically handled by plug#begin() and plug#end().

Refer to:
  https://github.com/junegunn/vim-plug/wiki/faq

Split windows in Vim

1. Splitting panes

 Ctrl-w n  : split horizontal pane (editing new buffer)

 Ctrl-w s or ":spit" : split horizontal pane (editing current buffer)

 Ctrl-w v or ":vsplit" : split vertical pane (editing current buffer)

2. Closing panes

 Ctrl-w c  or ":q": close pane

 Ctrl-w o  : close all panes, only current pane opened

3. Navigating panes

 Ctrl-w w  : switch to next pane

 Ctrl-w p  : switch to previous pane

 Ctrl-w Up  : switch to up pane

 Ctrl-w Down  : switch to down pane

 Ctrl-w Left  : switch to left pane

 Ctrl-w Right  : switch to right pane

Refer to
  http://codeincomplete.com/posts/split-windows-and-tabs-in-vim/

tmux installation & easy guide

For Ubuntu

tmux installation

sudo apt-get install tmux




Easy Guide

1. Run tmux

tmux

2. All commands in tmux are triggered by a prefix key followed by a command key (quite similar to emacs). By default, tmux uses Ctrl-b as prefix key. Thus Ctrl-b simply means press the Ctrl and b keys at the same time.

3. Splitting panes

 Ctrl-b %  : split horizontal pane

 Ctrl-b "  : split vertical pane

4. Navigating panes

 Ctrl-b Left  : switch to left pane

 Ctrl-b Right  : switch to right pane

 Ctrl-b Up  : switch to up pane

 Ctrl-b Down  : switch to down pane

 Ctrl-b p  : switch to previous pane


 Ctrl-b n  : switch to next pane

5. Adjust pane size

 Ctrl-b Ctrl-Left  : resize horizontal pane

 Ctrl-b Ctrl-Right  : resize horizontal pane

 Ctrl-b Ctrl-Up  : resize vertical pane

 Ctrl-b Ctrl-Down  : resize vertical pane

 Ctrl-b z  : make a pane go full screen or to shrink it back to its previous size

6. Closing panes / window

 Ctrl-b d  or exit : close pane or window

Refer to
  http://www.hamvocke.com/blog/a-quick-and-easy-guide-to-tmux/