Re: patrolling network thoughput

[David Young <dyoung%pobox.com@localhost>]

On Wed, Jan 19, 2011 at 10:26:59PM -0500, James K. Lowden wrote:
> What do you use to measure network thoughput over time? netstat(8)
> seems to be designed to debug a tcp stack, not to measure throughput.
>
> I'm getting ping times > 1000 ms on my DSL line to my default gateway.
> I think those times should be ~20 ms, and I think the ping times do
> *not* vary (nor should they) with line utilization.  But I don't have
> a good way to show that.

If the ping times do rise when utilization rises[1], you may be
suffering from bufferbloat.

http://mail-index4.netbsd.org/tech-net/2011/01/07/msg002391.html

Dave

[1] I think that ping times probably *will* increase, although that may
    not be your primary problem.

-- 
David Young             OJC Technologies
dyoung%ojctech.com@localhost      Urbana, IL * (217) 278-3933