Re: Weird Wireless Speeds

I appreciate all your replies.

First off, although I appreciate all your suggestions, none of them are
relevant. I doesn't matter what processor or anything else is in the
machines. They are identically configued except the 9400 has a bigger
screen and better video card which would have no bearing on my problem.
The rom/firmware version is the same for the wireless card, I've
checked. The driver is the same, I installed it to be so.

They are accessing the same access point so the model and revision of
the AP doesn't make any difference. It is not a bit/byte error because
that wouldn't be a third now would it? It'd be more like an 1/8 (not
exactly I know).

And as for software to test, it doesn't matter. It's the same software
on both machines. Now that we've gotten all the little details out of
the way I'll repeat the original question.

Does anybody know of a reason why two identically configured machines
would have different wireless download on a consistant basis from the
AP regardless of whether they are both accessing the AP at the same
time or not. There is no difference in the machines despite what your
hunch may be, I've spent two days getting every driver, firmware, MS
patch to be equal on both machines. The problem is limited only to the
wireless connection and is completely repeatable.

Sorry if I sound sore about the whole thing, I'm just a bit frustrated
with it. I know that generally we have to start at the basics, but
I've been doing this for years, I've covered the basics many times
over. The information I've given is a good summery, actual numbers
won't help because they don't impact the problem at all.

Jeff Liebermann wrote:
lcliffe@xxxxxxxxx hath wroth:

I'm experiencing a weird problem with some of my wireless laptops. We
recently upgraded our internet connection to a faster one.

When I checked the speed on my dell inspiron 9400, everything checked
out ok. When I checked it out on a Dell inspiron 6400 my speed was a
third of what I got on the original.

1. What model access point or wirless router was used in the test?
2. How are you measuring the performance? From the internet or from
a wired ethernet connected local server on your LAN? Using what
software to benchmark the system.
4. How about some numbers instead of generalities on the speeds? I've
seen far too many bits versus bytes errors.

The strange this is that both
have the exact same wireless card (an intel pro 3945abg with the same
hardware revision).

5. Is that the version supplied by Dell or the update downloaded from
the Intel web site? Are you using Proset to manage the connection or
Windoze Wireless Zero Config? If Proset, have you looked at the
diagnostics tab?
| http://www.intel.com/network/connectivity/products/wireless/proset/proset_software.htm

Both machines have the same processor,

6. What processor?

windows version

7. What version?

and have the
same patches applied.

8. Critical updates only, or did you include the optional updates and
hardware updates?

Both have the same version of the driver and
both drivers are configured identically.

9. What version of the driver?

Both machines are sitting
side by side, so signal strength is the same.

10. Are they simultaneously downloading up updateing while you're not
watching? Having two machines next to each other is not a great way
to do benchmarking. Turn one of them OFF or disable the wireless
adapter when running benchmarks. If one machine was furiously
downloading Windoze updates, while you were running benchmarks on the
other, I can see there might be a substantial slowdown.

I don't any reason why the download speeds should be different, but
they are.

I don't see any numbers.

As one last curious note, the upload seems to be the same on both, so
it's only the download speed that is affected.

11. What upload speed?

Without numbers, there's no way to do a sanity check on your
observations and allegations.

--
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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