Arduino Yun Mini: WiFi module boot up time is very long. Any way to cut it down?

Hardware Arduino Yún
1

Hi,

I played with Arduino Yun Mini for a while. My first feeling is that the Ar9331 Linux Wifi module boot up time is very long, a little more than 1 minutes.

Anybody has experience to cut this time down?

Arduino Yun Mini doesn't have USB, Ethernet adapter board. I am thinking maybe some boot up script can be deleted. Is it possible to cut this time down to around 30 seconds?

Thanks,

nick

2

nickyang:
Hi,

  1. I played with Arduino Yun Mini for a while. My first feeling is that the Ar9331 Linux Wifi module boot up time is very long, a little more than 1 minutes.

  2. Anybody has experience to cut this time down?

  3. Arduino Yun Mini doesn't have USB, Ethernet adapter board. I am thinking maybe some boot up script can be deleted.

  4. Is it possible to cut this time down to around 30 seconds?

Thanks,

nick

@nickyang,
On #1, Boot time on the Arduino Yun is two (2) to eight ( 8 ) minutes.

On #2, everyone.

On #3, The Arduino Yun Mini has a mini USB. That is used for power and the serial port to the device.

On #4, no.

Advice, Read the docs for the Arduino Yun.

Jesse

3

The Yun is running on openwrt - Linux.

10 ways to make Linux boot faster

  • #1: Disable unnecessary services
  • #2: Disable unnecessary kernel modules
  • #3: Use a lightweight window manager instead of GNOME or KDE
  • #4: Use a text-based login instead of a graphical login
  • #5: Use a lighter-weight distribution
  • #6: Use an OpenBIOS
  • #7: Avoid dhcp
  • #8: If you can spare it, get rid of hotplug
  • #9: If you are REALLY daring, you could give initng a try
  • #10: Use a hack with Debian

#7: Avoid dhcp:

Change wifi to static ip

Set static ip at wan (ethernet port)

4

nickyang:
...
Arduino Yun Mini doesn't have USB, Ethernet adapter board. I am thinking maybe some boot up script can be deleted. Is it possible to cut this time down to around 30 seconds?
...

Upgrade Openwrt Version version from Attitude Adjustment to Chaos Calmer will cut boot time down to 26 seconds

Openwrt Version:

  • Attitude Adjustment
  • Barrier Breaker
  • Chaos Calmer
5

@All,
some of you may recall this ad-hoc poll we did a few months ago.

Yun Boot time after hitting [YUN RST] averages 1:02
http://forum.arduino.cc/index.php?topic=323687.0

Jesse

6

Upgrade to faster CPU, Yun has AR9331 (400Mhz). The AR9344 (600Mhz) boots faster.

7