Have you connected another box (window$, mac, etc) to your connection to
test ?
Have you played with MTU/MSS ?Try IPERF to measure:
http://dast.nlanr.net/Projects/Iperf/
Tutorial: http://openmaniak.com/iperf.php
--
Gilson Soares
On Mon, Jun 23, 2008 at 19:59, Joshua Perry <[EMAIL PROTECTED]> wrote:
> Thanks Michael,
>
> I guess my question was a little misrepresented. Just to clarify for
> others; I don't need certain streams to be lower latency, just the overall
> latency of the internet connection seems off. I would love a more concrete
> measurement than seat-of-my-pants feeling, I'm just not sure what the best
> method to measure such things are.
>
> To respond to your comment, we are using our own internal caching DNS
> servers, which are themselves redirected to opendns which is allegedly the
> fastest DNS service available. Besides that, what makes me think it is
> unrelated to DNS is that even intra-page content is relatively slow. So
> even though the HTML may have a delay in loading, if it was DNS the images
> and other resources should load quickly, which isn't the case.
>
> Thanks again,
> Josh
>
> --------------------------------------------------
> From: "Michael Loftis" <[EMAIL PROTECTED]>
> Sent: Monday, June 23, 2008 4:49 PM
> To: "Shorewall Users" <shorewall-users@lists.sourceforge.net>
> Subject: Re: [Shorewall-users] Low latency/realtime
>
> > Try running your own DNS servers/resolvers. I doubt the firewall is
> > introducing any latency that's human detectable. (we're talking
> typically
> > sub-milli-second times on a machine that fast). A lot of times when I
> > hear
> > abotu things like that it's the resolvers they're using.
> >
> > You can also do traffic shaping/QOS, but that only makes a difference
> when
> > there's contention.
> >
> > --On June 23, 2008 4:19:02 PM -0600 Joshua Perry <[EMAIL PROTECTED]> wrote:
> >
> >>
> >> Hey everyone,
> >>
> >> We are currently using Shorewall 3.2.4 on a Gentoo distro with a
> >> dual-core Pentium 2.8Ghz and 1GB Ram. It is setup running NAT as our
> >> default network gateway to a 10Mb direct internet connection.
> >>
> >> I am wondering if there is some way to measure the latency produced by
> >> the firewall and if there are some standard kernel settings that can
> help
> >> latency. I am even willing to build a kernel with some low-latency
> >> patches if it may help.
> >>
> >> I ask this question because even though our internet connection is
> mostly
> >> idle it feels sluggish. Throughput seems on target, but browsing seems
> >> slower than on my own cable connection at home.
> >>
> >> Thanks,
> >> Josh Perry
> >
> >
> >
> > --
> > "Genius might be described as a supreme capacity for getting its
> > possessors
> > into trouble of all kinds."
> > -- Samuel Butler
> >
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