another question...

[silver55]

thanks... i'll give that a shot.

since you seem to be a guru around here, another question for you lobo...

i just wiped my system and stared over. thnigs wree running smoothly but now i have a really long lag when shutting down the system. i think it might be due to a driver i used while installing an ati tv-wonder card... xp said it was not compatible. however, i didn't have that problem prior to the fresh install... could there be another reason why it's lagging so much? i even did the waittokill tweak too.

thanx

[Lobo]

See #5 in help thread below:) :)

[silver55]

did that already... is there a way to see what's causing the hang up? i tried to shutting everything down through task manager too. no luck.

[Lobo]

I would think that driver, in device manager roll back to one that came with XP, reboot:)

[Lobo]

Please click in my signature where it says Test tweak here, then:
At top where it says edit click and select, Select all,
Then go back to same edit button at top, click and select copy.
Come back to Speed Guide, same thread you were on, in post reply box, with cursor blinking at begining of box go to top, edit, click, select paste, click, this will put information in box. Please X out your IP address, Thank you.:)

[silver55]

hi lobo...

can't do it right now -- not on the system. however, i did use the tcp optimizer and everything came out clean last night. i'm on dsl and everything was set correclty and I believe the rwin was something like 511336 or something like that... it was the highest rwin that was recommended through tcp analyzer... i'll post the real results when i get back on the other system... in about 2.5 hours.

do you think my rwin is to high?

[silver55]

another thought...

could it be due to the fact that i tried the ram tweak and stopped using a swap file? i think that might make some sense...

[Lobo]

Are you on PPPoE, what is your MTU?



PPPoE you have to log on to the internet with username and password. (Not log on to Windows)
PPPoE ( Point-to-Point Protocol over Ethernet ) is a method for building PPP sessions and encapsulating packets, as described in RFC2516. Although it is not a standard, PPPoE is already being used by a number of DSL providers. It requires either routers that have built-in PPPoE support, or PPPoE software to "dial up" and establish the session. You have to log on with name and password everytime you access net with PPPoE.
:)

[silver55]

yup, ppoe...

the mtu was correct. i think it was 1492, or something like that. either you or mnosteele checked out my numbers last time and itwas in order. since then, i reformatted and did a clean instal to wipe out any old programs that might still be on the system. i then did all the same tweaks as before with the addition of the swapfile tweak and deleting all of the content in prefetch.

[Lobo]

Yes RWIN is way to high for PPPoE, XP comes with MTU for PPPoE of 1480, what did you do, use raspppoe to change it, anyway post analyzer results when you can:) :) :)

[silver55]

lobo,

this is what i got from mnostelle:

Originally posted by mnosteele52
my first guess would be that you need to update you firmware for your router, I think that may be causing the wrong MTU to be shown. Look here (http://www.carricksolutions.com/windowsxp.htm) for some good information on PPPoE, Bob has the BEST site on PPPoE I know of. Download the TCPOptimzer (in my sig) and choose PPPoE, I don't know what your caps are but once you get your MTU correct (it should be 1492 although XP by default is 1480 - Bob has a fix for it on his site) try using custom RWINs of 31944, 63888 or 95832. Those are a few to help you out that might work fine, experiment with different sizes just keep it a multiple of your MSS -1452 (40 less than whatever your MTU is).:) :D

so did what he said and updated the firmware of the linksys router... so now i get 1492. i guess i'll try my original setting proir to the new install (rwin = 95832) and see if there is still a lagg in shutdown time.

[Lobo]

I'd try these if MTU is 1492, 31944, 63888 , but try what you want, remember bigger is not always better:) :)

[silver55]

as far as rwin is concerned... am i trying to select an rwin that will match my caps? so if i'm on 768/128, then the rcvwindow i get should give me roughly something close to 768 at 200ms and 500ms? is that the goal or is there some other way to test the correct rwin. when everything was running smoothly, it didn't make much of a difference on speed tests, they always came back at 700/130.

[Lobo]

Might have to call ISP, the big RWIN's in analyzer are for cable user's:)

[silver55]

well, it was running smoothly before the clean install... go figure...

the lag has really been pissing me off and i just can't tell if it's the tweaks or the optimizer changes... or the direver problem...

anyway, thanks for your help and insight.

BTW- what is the "bandwidth * delay product" and how does it play into the speed factor?

thanks again

silver

[Lobo]

This is from administrator of site:

Philip
Administrator

Registered: May 1999
Location: Tampa, FL
Posts: 1822
RWIN, or the Receive Window is a buffer negotiated at the beginning of any TCP/IP transfer... Smaller buffers limit your maximum speed, since the sender has to receive acknowledgements for the packets that have been send to the client. For example, if your RWIN bufer is 3 packets, the server will stop transmitting after it has sent 3 packets until it receives acknowledgement that something has been received.

The higher the latency (pings), the longer it takes for those acknowledgements to travel back to the server, that's where the bandwidth*delay product comes in.

Based on a certain RWIN buffer, and on a certain latency, you can calculate the maximum possible throughput. Basically, the larger the RWIN ( or/and the lower the latency ), the higher transfer rate you can achieve.

I hope this clears it up a bit
:)

[silver55]

thnx:)

if all else fails, i'll just wipe it clean again!!!:D :D :D

[Lobo]

#12 in help guide below in help thread is DSL Guide, I think duplex mode for you is 10 Full duplex:)

[silver55]

i have it on full duplex now, but at 100. what's the difference between 10 and 100? i used 100 full thinking that it would increase my home networking speed, since i do a lot of file sharing.

thanks for bringing that up...

[Lobo]

I think it should be 10:)

[silver55]

lobo...

damn... now i'm pissed... ok, the driver thing was really pissing me off so i yanked the card, wiped the system clean and started over.

i decided to do all my tweaks before loading any software to see how fast it can really go. it was halling some serious butt with all of the regedit tweaks i put in. that solved to slow logoff/shutdown problem i had.

--the clincher--
i loaded norton antivirus 2002 and that's where i start getting into some wierd *****. NAV installed fine but when it went to do the first scan of the system, the error reproting starts going crazy. it said some error was occuring with a minidump file or something like that. now i think that it was never really a driver problem but really NAV that was the source of all my lags. NAV was alway the program that was always fussy about closing down.

any thoughts on this one?

[Lobo]

I don't use any Nortom products as they slowed me down to much, I use Norton Ghost but's that's it, I bought Norton virus and threw it away, maybe someone else can help you, they make good products but just slow me down to much:)

[silver55]

yup... SLOOOWWW... that's what has been pissing me off. now that i narrowed it down to norton, tiem to follow suit and chuck it into the can.

what are you using instead, mcafee?

[Lobo]

http://www.ontrack.com/fixit/

[silver55]

thnx... i'll give it a shot.

any idea about the minidump problem?

[Lobo]

I've never heard of it, it may be something with Norton, ask in Software Forum, please:)

[silver55]

lobo,

thnx for the heads up on the software. installed the full suite lst night on a clean install. solved all my problems. definitely a lot faster then norton... this suite has a firwall with it, any good? i was originally using zone alarm...

in regards to the the duplex issue, i tried it both, 10 full and 100 full. there didn't seem to be a differnce... but you know best ;) i'll leave it on 10 full.

thanks again

silver