[juneau-lug] Re: Web100 servers

  • From: "Myron Davis" <myrond@xxxxxxxxx>
  • To: juneau-lug@xxxxxxxxxxxxx
  • Date: Sun, 24 Sep 2006 21:00:11 -0800

another way to increase bandwidth on consumer connections is to always order
outgoing ACK's before any other type of packet.
On 9/24/06, Kevin Miller <millerboys@xxxxxxxxxxxxx> wrote:
>
> James Zuelow wrote:
> > I've always used sites like dslreports.com for speed tests.
> >
> > I ran across these Web100 servers, which provide a lot more information
> about
> > tuning your connection.  If you have a 1.5Mb/sec cable modem and you're
> not
> > seeing the performance you expect, trying these out might shed some
> light on
> > the problem.
> >
> > Information on Web100 in general is here:
> > http://www.web100.org/
> >
> > And the specific tool used in the tests is NDP, available here:
> > (info)
> > http://e2epi.internet2.edu/ndt/
> > (download)
> > http://e2epi.internet2.edu/ndt/download.html
> >
> > Anyway, if you're curious, some of the NDT sites are listed
> below.  There are
> > more available on the e2epi site above, but I couldn't connect to them
> > (internet 2 thing probably).
> >
> > Once you run the test, click on statistics or more details to get more
> > detailed information than you'll get from the free dslreports.com test.
> >
> > You need Java to run the applets.  All of the pages will automatically
> attempt
> > to load the java applet, so expect a Firefox warning if you click on
> them.
> >
> > Argonne National Laboratory (always tells me I have a duplex mismatch):
> > http://miranda.ctd.anl.gov:7123/
> >
> > University of California SC (best results for me, shortest path):
> > http://nitro.ucsc.edu/
> >
> > Stanford (here because of it's physical proximity to Alaska - appears to
> be
> > missing the "start" button though.)
> > http://netspeed.stanford.edu/
> >
> > University of Michigan:
> > http://speedtest.umflint.edu/
>
> Interesting.  I ran it at Santa Cruz and it said I need to increase my
> receive buffers (currently 128 Kb).  Searching around I noted that
> recent kernels (2.6.6+, mines 2.6.13+) should auto tune the buffer size.
> Apparently it isn't.  So how do I increase the receive buffers to
> somewhere around 640 Kb?
>
> ...Kevin
> --
> Kevin Miller
> http://www.alaska.net/~atftb
> Juneau, Alaska
> Registered Linux User No: 307357
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