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40 Mbps is pretty wild. You can bet you won't see continuous speeds
much above what you're paying for. I've noticed that I have to reboot
my routers periodically to keep them from getting sluggish. I now
include that in my Monday maintenance rituals along with system
patches, etc. Comcast does have some sort of turbo boost technology
that's supposed to work for a short period of time whether you're on a
speed test or not. That can skew the results on a short term speed
test. For an indication of a more prolonged download test, try
downloading a Ubuntu ISO or similar from a fast mirror. I've clocked
these: <a class="moz-txt-link-freetext" href="http://www.gtlib.gatech.edu/pub/ubuntu-releases/">http://www.gtlib.gatech.edu/pub/ubuntu-releases/</a> and
<a class="moz-txt-link-freetext" href="http://mirrors.cs.wmich.edu/ubuntu-releases/">http://mirrors.cs.wmich.edu/ubuntu-releases/</a> at sustained speeds of 15
- 16 Mbps when they're working. (As a side note, don't let the Ubuntu
site pick your mirror for you, or you may be waiting hours downloading
at .5 Mbps from Europe.) Once you get above about 25 Mbps, cheap
wireless routers, switches, and slow internet servers can easily be
your bottleneck. I had an old Belkin wireless router that refused to
go above 10 Mbps. It worked fine, but it just couldn't handle any more
packets than that. Also, note that the max signaling rate for Wireless
G signals is 56 Mbps, I think. The maximum data throughput will be
somewhat less.<br>
<br>
Sincerely,<br>
<br>
Ron<br>
<br>
On 1/14/2012 8:48 PM, Jim Kinney wrote:
<blockquote
cite="mid:CAEo=5PyPx+_29MW7QAW7CnPSQ7wx8gTW_11Afe82P7pkvzSTcA@mail.gmail.com"
type="cite">
<p>All ISPs know the speedtest sites. Comcast is known to privide
priority routing.</p>
<div class="gmail_quote">On Jan 14, 2012 7:53 PM, "Drifter" <<a
moz-do-not-send="true" href="mailto:drifter@oppositelock.org">drifter@oppositelock.org</a>>
wrote:<br type="attribution">
<blockquote class="gmail_quote"
style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;">On
Saturday, January 14, 2012 05:36:53 pm Kirsa wrote:<br>
> I would not be surprised if you experienced a similar speed issue
next<br>
> Friday though... On almost any residential cable node Friday
5-12pm is<br>
> peak time and has the most utilization of the entire week. So that
you<br>
> were down to 4mbit/s on Friday evening and 2mbit/s by Friday night<br>
> sounds suspiciously like congestion to me, despite the faulty<br>
> equipment.<br>
[Rest trimmed for brevity.]<br>
<br>
I had the same speed issues at 9 am Saturday morning. Snail-slow
download<br>
speeds continued all day Saturday until I replaced the defective hub.<br>
Then: BINGO! full speed returned. In fact, a speed about 19:45 Saturday<br>
(Speakeasy's test) returned the rather unbelievable download speed of<br>
40.59 mbs! The upload speed was only 4.16. Obviously some sort of burst<br>
speed. Does Comcast have some way to know when I access a speed test
site<br>
and goose the speed for a few seconds?<br>
<br>
Sean</blockquote>
</div>
</blockquote>
<br>
<pre class="moz-signature" cols="72">--
(PS - If you email me and don't get a quick response, you might want to
call on the phone. I get about 300 emails per day from alternate energy
mailing lists and such. I don't always see new messages very quickly.)
Ron Frazier
770-205-9422 (O) Leave a message.
linuxdude AT c3energy.com
</pre>
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