diagnosing network speed bottlenecks

[Bill McGonigle]

Sorry if I'm repeating others, I lost a couple messages to kernel
message that made my mailscanner segfault..

> Speed tests like http://www.dslreports.com/speedtest?flash=1 report my
> performance as...
> 4,909 Kb/s Download
> 3,055 Kb/s Upload

so this rules out everything Comcast told you could be the problem

> But, in my experience downloading files, I rarely get anything like
> that.   In fact, while the DSL Reports Speed Test is checking my
> system, I'm watching the "Network History" graph on the "Resources"
> tab of System Monitor (v2.26.0.1) aka gnome-system-monitor and it's
> not breaking 800Kbps.  I then used wget to download MySQL Workbench
> and it reports 33,373,104 downloaded in ~42 seconds at a rate of 783
> KB/s

are you mixing b and B here?

Note that some ISP's are known to cheat on well-known speed tests.  If
you have access to a fast offsite server, try your own network speed test:


http://blog.bfccomputing.com/articles/2007/06/09/your-network-speed-testing-made-easy

That should tease out whether you're being unfairly shaped or not.

-Bill

-- 
Bill McGonigle, Owner
BFC Computing, LLC
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