[GRLUG] NOT LINUX - broadband test

Bob Kline bob.kline at gmail.com
Sun Jun 27 23:23:54 UTC 2010


On Sun, Jun 27, 2010 at 3:55 PM, Michael Mol <mikemol at gmail.com> wrote:

> On Sun, Jun 27, 2010 at 12:40 PM, Bob Kline <bob.kline at gmail.com> wrote:
> > On Sun, Jun 27, 2010 at 11:13 AM, Michael Mol <mikemol at gmail.com> wrote:
> >> On Sun, Jun 27, 2010 at 10:58 AM, Bob Kline <bob.kline at gmail.com>
> wrote:
> >> > On Sun, Jun 27, 2010 at 9:55 AM, John-Thomas Richards
> >> > <jtr at jrichards.org>
> >> > wrote:
> >> >> On Sun, Jun 27, 2010 at 08:44:26AM -0400, Luan Pham wrote:
> >> >> > On Sat, 2010-06-26 at 20:57 -0400, John-Thomas Richards wrote:
>
> [snipped]
>
> >>
> >> As I mentioned earlier, if you have Comcast, you have SpeedBoost. If
> >> you have SpeedBoost, your transfer rate cap changes over the course of
> >> the transfer.  A 1MB file will have a different average transfer rate
> >> from a 1GB file, because that 1GB file will see a throughput drop
> >> somewhere early into the file.  What you *really* want to do is
> >> measure your throughput along 10s intervals over the course of a 2min
> >> transfer.  You should be able to find where SpeedBoost drops out
> >> there.
> >>
> >
> > Indeed.  Speedboost give a 25% boost.
> > Time?  Clearly if it didn't cut out you'd
> > have a higher speed service.  I don't have
> > a hard number handy, but it takes a pretty
> > large file to get past it.  The goal seems to
> > be to provide the higher speed for a large
> > fraction of what you do, and in my experience
> > it does that.
>
> I see it *regularly*, but primarily because my largest bandwidth
> usages are uploading large photosets. I'm paying for the 6Mb/s
> service, so 19Mb/s is a HUGE amount higher than a "25% boost".
>
>
 As I mentioned, in the recent past I used
to see rates as high as 34 Mbps down.

But only early on a Sunday morning, and
only from test servers.  Does this just suggest
that Comcast will give you what its got as
long as no one else is using it?  i.e., the
whole pipe?

    -- Bob

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