[GRLUG] An ISP question

[Bob Kline]

OK,   that's over 7Mbps,  and clearly a good test site.

   -Bob


On 8/11/06, David Pembrook <david at pembrook.net> wrote:
>
>  For big fast files... try:
> ftp://fedora.mirrors.tds.net/pub/fedora-core/5/i386/iso/FC-5-i386-DVD.iso
>
>  I've always loved the TDS mirrors
>
>  wget
> ftp://fedora.mirrors.tds.net/pub/fedora-core/5/i386/iso/FC-5-i3
>  --15:05:52--
> ftp://fedora.mirrors.tds.net/pub/fedora-core/5/i386/iso/FC-5-i386-DVD.iso
>             => `FC-5-i386-DVD.iso'
>  Resolving fedora.mirrors.tds.net... done.
>  Connecting to fedora.mirrors.tds.net[216.165.129.141]:21... connected.
>
>  Logging in as anonymous ... Logged in!
>  ==> SYST ... done.    ==> PWD ... done.
>  ==> TYPE I ... done.  ==> CWD /pub/fedora-core/5/i386/iso ... done.
>  ==> PORT ... done.    ==> RETR FC-5-i386-DVD.iso ... done.
>  Length: -1,041,297,408 (unauthoritative)
>
>      [                                           <=>
>                     ] 70,036,864   890.87K/s
>
>
>
>
>
>  Bob Kline wrote:
>  I've played these games over the years.
> When I lived in NJ four years ago, our
> ISP goofed, and uncapped our service.
> For many months we had the full DOCSYS
> limit: 10Mbps down, and 800 Kbps up.
> I know this because I could upload large
> files of known size to the ISP's customer
> web space, and coming down, the gnu.org
> site from MIT seemed to have no cap. There
> too I could download large packages of known
> size, and the speed was always in the 9.6
> to 9.8 Mbps range.
>
> Hog heaven until the ISP discovered its
> mistake. As I mentioned, my web hosting
> service might have its own upload limit -
> I will check in to this. But even gnu.org does
> not seem to provide even 8Mbps rates any
> more, so testing high download rates is a
> problem.
>
> Or of course it could be Comcast, as
> mentioned in a previous note. If so, why
> they would sell an 8Mbps service, and
> cap it at a rate lower than that, would be
> a story worth knowing about. It could be
> a mistake, and it could be something else.
>
> Others with Comcast might want to see
> what they are actually getting. Using
> FTP, a file of known size, and a watch,
> is the most fundamental way to do it.
>
> Re 1.5Mbps T1, having the symmetric
> bandwidth has its own appeal. Too bad T1
> lines never really came down much in
> price. But then, symmetric bandwidth is
> always expensive, no matter what it's
> based on.
>
>  -Bob
>
>
> On 8/11/06, David Pembrook <david at pembrook.net> wrote:
>
>
>  At that speed you may be able to see how fast other people's pipes are as
> well. I know companies that host their customers on a single T1 (1.5/1.5).
> This is perfectly fine if they aren't over utilizing their pipe and don't
> handle a lot downloads.
>
>  If you want to see your single connection best speed, try downloading a
> Linux ISO from a close by EDU ftp server. Unless things have changed, they
> don't tend to cap them. I don't see over 500k/sec down on my dsl so I can't
> test it.
>
>  Dave
>
>
>  Michael Mol wrote:
>  On 8/10/06, Bob Kline <bob.kline at gmail.com> wrote:
>
>
>  I have the Comcast 8M / 800K package.
> Independent of the time of day, I get
> something like 6Mbps down from some
> sites, and typically 640Kbps up to my
> web hosting site, using FTP.
>
> Now, if I use two or more FTP jobs to
> transfer data to/from my web hosting site
> I invariably get the full 8M / 800K. I
>
> 'm just curious why this would be. I'm
> temped to say it's not Comcast, since
> I do get the full rates under certain
> circumstances. Why my web hosting
> site would limit a single stream to 640Kbps
> up, if it is, I have no idea - I will contact them
> and ask.
>
> In the mean time, any thoughts here, or
> similar experiences?
>
>  Would "certan circumstances" be such where the data transfer consisted
> of multiple data streams? (Like download accelerators and p2p
> clients?)
>
> Comcast might have a cap on the throughput of individual TCP streams.
> Seems likely, especially if they expect customers to have more than
> one simultaneous user to a particular account. It would certainly make
> for an easy way to keep one user from hogging all the bandwidth, and
> thus reduces complaint calls about "My internet is slow!"
>
>
>
>
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