W dniu 2010-12-30 18:47, Ted Unangst pisze:
quoted text
> On Thu, Dec 30, 2010 at 8:47 AM, RLW<serandom@o2.pl>  wrote:
>>> index  %time    self descendents  called+self    name           index
>>> [1]     83.9    0.00      359.49                 sched_idle [1]
>>> You spent>    80% in idle. So while forwarding all that traffic the box was
>>> mostly idle.
>>
>> although kernel profiling stats show that system spends 80% time in idle,
>> top during the iperf test shows:
>>
>> load averages:  0.40,  0.16,  0.11 15:43:02
>> 27 processes:  1 running, 25 idle, 1 on processor
>> CPU states:  0.6% user,  0.0% nice, 77.6% system, 21.8% interrupt,  0.0%
>
> I forget if the profile counts interrupts as coming from idle.  If
> you're mostly forwarding traffic, the idle loop will be the top
> function on the stack just about always.
>

any new ideas about where the problem is and how to fix it?


best regards,
RLW