On Thu, 28 Aug 2008 22:55:29 +0300
Denys Fedoryshchenko [off-list ref] wrote:

On Thursday 28 August 2008, Eric Dumazet wrote:

quoted

OK, please try oprofile with call graph analysis.

I did already. Even because most of programs (except ripd/zebra) can be 
killed, and i kill them, it doesn't change almost anything.

it seems heavy things causing instability:

1)HTB (resolution can be lowered to improve performance, i will try Jarek 
patch soon)

If you are doing HTB it also calls clock to get timing information.
Each packet dequeue in htb calls psched_get_time() and that becomes
another call nano-second real time clock.

If your embedded processor has really expensive clock, you probably
just want to provide an alternative cheaper time source with less
resolution.