RE: Vista Latency Issue

Please see inline comments regarding baseline below. All ping stats are
pinging the router, tracert shows no intermediate hops, it goes straight to
the router.

Thanks,

Alan

-----Original Message-----
From: Michael Sinatra [mailto:michael_at_rancid.berkeley.edu]
Sent: Tuesday, May 29, 2007 11:05 AM
To: Alan Willcuts
Cc: micronet-list_at_listlink.berkeley.edu
Subject: Re: [Micronet] Vista Latency Issue

I agree with Jon that it sounds like a driver issue. For completeness,
it would be useful to have the same statistics as below for XP. It's
clear that 6ms is way too high an average RTT for pinging the router
interface (I assume that's what you're pinging), but it would still be
nice to know the baseline. Have you tried tracerouting to the same
places you're pinging? I have heard that Vista tries to tunnel IPv6 by
default, which shouldn't have anything to do with this problem, but I
wonder if something really weird is happening.

Anyone else experiencing the same problems with Vista?

Alan Willcuts wrote:
> Thanks Jon for the suggestion:
>
> Have already tested Vista in Worgroup (default firewall rules) vs. Vista
on
> Domain (with group policy firewall settings) here is a recent ping -t
output
> over about 1.5 hours:
>
> Vista worgroup:
>
> Packets: Sent = 4631, Received = 4588, Lost = 43 (0% loss),
> Approximate round trip times in milli-seconds:
> Minimum = 0ms, Maximum = 2884ms, Average = 10ms
>
>
> Vista Domain:
>
>
> Packets: Sent = 4808, Received = 4780, Lost = 28 (0% loss),
> Approximate round trip times in milli-seconds:
> Minimum = 0ms, Maximum = 2660ms, Average = 6ms

XP Baseline, same machine as "Vista Workgroup" above (note: much shorter
time span and different time of day)

Packets: Sent = 679, Received = 679, Lost = 0 (0% loss),

Approximate round trip times in milli-seconds:

    Minimum = 0ms, Maximum = 33ms, Average = 1ms

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Received on Tue May 29 2007 - 14:36:35 PDT