Datasheet

VIPER Embedded Linux Development Kit Quickstart Real-time Linux on the VIPER

4 Set the CPU speed to either 200MHz or 400MHz as follows:

To set it to 200MHz enter: •

•

# echo 200000 > /proc/sys/cpu/0/speed

To set it to 400MHz enter:

# echo 400000 > /proc/sys/cpu/0/speed

5 Do one of the following:

For the Linux test, run:

# /bin/jitter.user

For RTLinuxPro, you must start the underlying RTOS first. Run the following

commands by entering:

# /bin/rtcore &

Allow a short delay for the RTOS to load and configure itself, then enter:

# /bin/jitter.rtl

6 Run a ping flood of the board from another machine:

# ping -f viper.ip

Worst-case figures are displayed for each test. These are all that matter in hard

real-time systems.

Arcom provides support for RTLinuxPro through FSMLabs directly. Contact

FSMLabs (at support@fsmlabs.com

) if you have questions, or if you require

more information about the capabilities of and development tools for

RTLinuxPro.