Device polling heavy traffic
mihai at duras.ro
Mon Dec 26 23:56:08 PST 2005
Sorry for omitting the esential details about my system.
You can find my dmesg at:
Here is my kernel configuration:
I wasn't there when the panic happened, I just noticed the load average
was increasing (with polling disabled); and it kept increasing until the
machine become unresponsive. After 1-2 minutes I observed it had
Now I have polling enabled on it, I have kernel.idle.poll set and a
latency of 1-5 ms inside the local network.
But on the 3 links I have spoken of, altough they are not full I have
between 1-5 ms and 20-30 ms (when the number of packets passive through
the machine increases).
Mike Jakubik wrote:
> Mihai Tanasescu wrote:
>> The problem:
>> If I ping this machine or anything that is routed through it I get
>> response times of 10-15-30 ms and once in 30 seconds a packet is lost.
>> If I disable kernel.polling.enable then I get response times of 1-2-3
>> ms but I also get a lot of interrupts and a kernel panic after about
>> 20 min.
> You should not be getting a panic, unless you have bad hardware. Can
> you provide more details of the panic? Also, provide the version of
> freebsd, any custom kernel configuration, and attach output of dmesg.
More information about the freebsd-performance