Latest LQ Deal: Complete CCNA, CCNP & Red Hat Certification Training Bundle
Go Back > Forums > Linux Forums > Linux - Hardware > Linux - Embedded & Single-board computer
User Name
Linux - Embedded & Single-board computer This forum is for the discussion of Linux on both embedded devices and single-board computers (such as the Raspberry Pi, BeagleBoard and PandaBoard). Discussions involving Arduino, plug computers and other micro-controller like devices are also welcome.


  Search this Thread
Old 05-09-2013, 02:00 PM   #1
Registered: Aug 2004
Posts: 173

Rep: Reputation: 0
multiple linux panels reboot at the same time (maybe from network traffic)

Hi this is an interesting and challenging question.

We build customized linux boards, using kernel
The boards boots up to linux prompt, not running apps.
Developers have 1 or 2 boards each, doing their own tasks.

The Atmel ARM board has one 10/100 ethernet port, one GIGE port.
We don't find correlations between which interface is used with the reboot issue.

Once a while, we found multiple boards reboot at the same time, (not all of them).

We suspect it's the network traffic caused reboot, as they reboots at the same time.

But when linux reboots, it doesn't display any useful message. It's just like you reset the power, and all you see is the uboot prompt again.

We did use expensive power supply to make sure this is not power glitch, but no difference.

Any suggestions ?

Last edited by 5883; 05-09-2013 at 02:01 PM.
Old 05-13-2013, 11:41 AM   #2
LQ 5k Club
Registered: Aug 2005
Distribution: OpenSuse, Fedora, Redhat, Debian
Posts: 5,397
Blog Entries: 2

Rep: Reputation: 908Reputation: 908Reputation: 908Reputation: 908Reputation: 908Reputation: 908Reputation: 908Reputation: 908
Whenever multiple hosts spontaneously reboot or crash at the same time, I would look very closely at the power source. Sure you've got a good power supply, but where does the power supply get it's energy? How clean and reliable is that? There's always the classic cases like the janitor comes in every evening and trips off devices by plugging in a big vacuum cleaner, or unplugs something briefly.
The network may also be a source of problems, but I doubt it would be from actual traffic, except perhaps broadcast storms. I would look at something more electrical in nature, such as surges/noise spikes induced onto the cables from some heavy industrial equipment, RF systems, etc.
--- rod.


Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is Off
HTML code is Off

Similar Threads
Thread Thread Starter Forum Replies Last Post
network traffic is 10 time more than the speed i get ! alieblice Linux - Networking 1 07-31-2012 12:36 AM
Network Traffic Stops After High Traffic windisch Linux - Networking 6 12-17-2007 05:45 PM
Linux time change after reboot yytan Linux - Newbie 14 01-09-2006 02:06 AM
linux time changes 1 hour -- after reboot mrconover Linux - Software 4 10-07-2004 05:13 PM
Multiple network configurations at boot time. HOW? FairyFighter Linux - General 14 03-10-2004 05:04 AM > Forums > Linux Forums > Linux - Hardware > Linux - Embedded & Single-board computer

All times are GMT -5. The time now is 01:29 AM.

Main Menu
Write for LQ is looking for people interested in writing Editorials, Articles, Reviews, and more. If you'd like to contribute content, let us know.
Main Menu
RSS1  Latest Threads
RSS1  LQ News
Twitter: @linuxquestions
Facebook: linuxquestions Google+: linuxquestions
Open Source Consulting | Domain Registration