Re: DI 624 revC- severe wireless latency after consistent throughput

On 26 Sep 2005 17:10:30 -0700, lunyee@xxxxxxxxx wrote:

>The latency I measured was from the wireless client to the router.

That can't be correct. Wireless latency between the client and the
router should be about 1-3msec. At a 54Mbit/sec connection, ping
usually shows zero latency when I ping the router. You were getting
20-70msec which is what I would expect if you were pinging something
on the internet over a partially congested broadband connection.
Could you describe how you got latency numbers?

>When
>we measured this latency the only program that was running was World of
>Warcraft. I can guarantee that World of Warcraft did not saturate an
>802.11g connection. That is a problem. We're very careful of watching
>our upstream. I'm aware of latency introduced by this and I'm fairly
>certain that this isn't it.

Playing games for 6 or 7 hours? Slacker. I wished I had time for
that.

How much of your upstream are you normally using? Most of the games
I've seen send data in bursts during which they saturate the outgoing
bandwidth. You don't see that because the traffic statistics are
averages. However, if you tried to ping something on the internet
while there bursty traffic, you would see very wide variations in ping
times.

Any chance that Windoze Update, NAV update, MS Anti-Spyware, etc were
doing updates when you were testing after 6-7 hours?

My guess(tm) is that you may have found a bug or problem in the
DI-624. However, if reproducing the problem requires 6 hours of
traffic, it's going to be difficult to identify. If possible, borrow
a different brand or model router and try it instead. If it also does
the same thing, then there's something wrong with how your testing,
with your assumptions, or with your client computers. That doesn't
solve the problem, but at least it narrows down the potential
culprits.



--
Jeff Liebermann jeffl@xxxxxxxxxxxxxxxxxxxxxx
150 Felker St #D http://www.LearnByDestroying.com
Santa Cruz CA 95060 http://802.11junk.com
Skype: JeffLiebermann AE6KS 831-336-2558
.

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