nitrogen6lite stall and cpu load

[jarmok]

Hi,

I am experiencing following two problems with My nitrogen6lite board - anyone else has experienced similar problems? I am using boundary devices kernel and custom rootfs.

1. When running from SD Card and starting for example new applications, the system occasionally stalls for something like 5 seconds after which it continues normally and application starts. For

Me this looks like I/O problems of some kind but not sure?

2. Load average on completely idle device (all user mode processes killed) seem somehow strangely high. E.g.

CPU: 0% usr 0% sys 0% nic 99% idle 0% io 0% irq 0% sirq

Load average: 2.03 1.24 0.53 1/50 1415

As far as I understood, the load average should fall close to zero (no processes run queue waiting for execution), right?

I also made similar findings with SabreLite (quad core) where the Load average was somewhere near 4.

[EricNelson]

Hi Jarmo,

To answer question 1, we really need to know what userspace you're using. We have seen some issues with delays on Debian or Ubuntu which appear related to excessive disk I/O. In particular, if command-line completion is invoked using the "Tab" key, the system will appear to stall while a large number of directories are searched. Do you have some specific examples of when things appear to stall?

I don't understand question 2. The way I'm reading the output is that the load is zero. I assume that you're questioning the "Load average" numbers, but I'm not sure how to interpret them.

[admin]

pejmankalkhoran

Hi Pejman, can you please answer this question of an issue that is occurring on the Nitrogen 6Lite and SabreLite boards?  Thanks.

[YixingKong]

pejmankalkhoran, are you able to help the customer's question?
Thanks,

Yixing

[admin]

pejmankalkhoran, TroyKisky, EricNelson, robertwinkler

Can anyone at Boundary Devices help with this issue?  Thanks!

[EricNelson]

Thanks for the ping, Grant.