[PLUG] How fast is my network, really?

[Carlos Konstanski]

On Mon, 19 Nov 2007, Russell Senior wrote:

> Date: 19 Nov 2007 12:44:29 -0800
> From: Russell Senior <russell at personaltelco.net>
> Reply-To: "General Linux/UNIX discussion and help;	civil and on-topic"
>     <plug at lists.pdxlinux.org>
> To: "General Linux/UNIX discussion and help;	civil and on-topic"
>     <plug at lists.pdxlinux.org>
> Subject: Re: [PLUG] How fast is my network, really?
> 
>>>>>> "Aaron" == Aaron Burt <aaron at bavariati.org> writes:
>
> Aaron> On Sun, Nov 18, 2007 at 11:11:34PM -0800, John Jason Jordan
> Aaron> wrote:
>>> My laptop and my desktop are connected over ethernet, all
>>> components of which are cat6, and each computer has gigabit lan
>>> built in. Since Aaron helped me get my backup partition on the
>>> desktop fixed at the Clinic today, this evening I decided it was
>>> time to back up the laptop to the desktop. By my calculation it ran
>>> at about 105 MB per minute.
>
> Aaron> 1GB = 125 MB = 119 MiB.  Speaking as someone who's just
> Aaron> finished a 12-month contract testing network hardware at Intel,
> Aaron> 105 MB per second would be really good.  I can't guess why
> Aaron> you'd see 1/60th of that, unless you're actually running at
> Aaron> 100Mbps, or even WiFi at 54 Mbps.
>
> I don't know anything about dar, and this might not be remotely true,
> but if there is encryption going on, there might be CPU bottlenecks.
> Run top (or equivalent) at both ends to see.
>
>
> -- 
> Russell Senior, Secretary
> russell at personaltelco.net

My money is (once again) on Russ.  Encryption or compression would do
the trick.

Carlos Konstanski