View Full Version : I am capped at 1.5 mb down and 768 up...give me the best RWIN, plesae.
jarablue
06-04-01, 12:49 AM
Hey all I have a cap put on me for 1.5 down and 768 up. What would be the best RWIN to use for those settings?
plz tell us about your puter,connection,and currently applied tweaks...noy enuff nfo to hlp yet:confused:
lance-tek
06-04-01, 02:01 AM
to add on to what uod2001 has said, post the system specs, take TCP/IP Analyzer in my sig, and be sure to check out lobo's help page, you can find it in either of our sig's. Great Minds think and link alike :)
jarablue
06-04-01, 02:11 PM
I have Windows 98 SE, P3 933 and 512 megs of cas2 pc133 crucial ram. Here are the results from the analyzer:
TCP options string = 020405b40103030301010402
MTU = 1500
MTU is fully optimized for broadband.
MSS = 1460
Maximum useful data in each packet = 1460, which is equal to MSS.
Default Receive Window (RWIN) = 513920
RWIN Scaling (RFC1323) = 3 bits
Unscaled Receive Window = 64240
RWIN is a multiple of MSS
Other values for RWIN that might work well with your current MTU/MSS:
256960 (MSS x 44 * scale factor of 4)
128480 (MSS x 44 * scale factor of 2)
64240 (MSS x 44)
bandwidth * delay product:
Your RcvWindow limits you to: 20556.8 kbps (2569.6 KBytes/s) @ 200ms
Your RcvWindow limits you to: 8222.72 kbps (1027.84 KBytes/s) @ 500ms
MTU Discovery (RFC1191) = ON
Time to live left = 48 hops
TTL value is ok.
Timestamps (RFC1323) = OFF
Selective Acknowledgements (RFC2018) = ON
IP type of service field (RFC1349)= 00000000
You may try RWIN's of 522680 and 524176:)
jarablue
06-04-01, 05:41 PM
Ok thanks I will try that tonight. I seem to be stuck at 179-180KB for downloading. Although I get an initial burst speed of 500-800KB it doesn't stay there. I am going to try to squeak out as much as I can. Thanks Lobo
Make sure to try RWIN's during daytime as night time is slowtime:) :)
AtlasFBG2
06-04-01, 06:22 PM
Turn the scalling off and try rwin of 32767.People with caps of 2mb or lower dont need more than that.Im on Road Runner with 384kup and 2000k down and every speed test i run is between 1924k and 1980k.if i run a higher rwin it drops some.Late at night i sometimes get a little over my cap 2060k was the highest.If you get high pings over 100ms maybe try 64240.These guys that aint capped are only gona benifit from rwins over 64240
Could not have said it better than dslr:)
AtlasFBG2
06-05-01, 02:04 AM
lol knew that was comeing.seriously thou if your capped at 2mb know mater how hard you tweak it aint going no higher.Ill make you deal lobo if you can find some setings that im missing and i can get over 2000k consitently on speed test ill mail you a check for a grand.I have tried the recomandations by many on this site and my speed drops with the high rwins.Downloading aol 6.0 with 32767 i get 221 most of the time.With rwins over 64240 i get 212 most of the time.
cablenut
06-05-01, 04:40 AM
Info for 32767 RWIN:
Limit for given latency:
@ 50ms
655kB/sec
@ 100ms
327kB/sec
@ 150ms
218kB/sec
@ 200ms
183kB/sec
This RWIN should be fine with a 1.5Mb (187kB) dsl user.
AtlasFBG2, I am capped at 1.5, I use big fat juicy RWIN because itty bitty one don't work, when you can do this, please come back and tell me how great 32767 is:
Bandwidth Down 8901 Kbits/sec
Bandwidth Up 884 Kbits/sec
Average Ping 74 ms
Ping Loss 0%
TCP Receive Window xxxxxxxx
External IP Address xxxxxxxx
Internal IP Address xxxxxxxx
Browser MSIE 6.0b; 5.1
IE current cache 5 MB
IE max cache 10 MB
:) :) :) :)
It's easy, Speedguide and Cablenut Rule
cablenut
06-05-01, 12:58 PM
Bandwidth Down 8901 Kbits/sec
Bandwidth Up 884 Kbits/sec
I am capped at 1.5
According to your speed test your getting 8.9Mb.
When I put in 32767, I get er, ah, I rather not say:)
I know he's talking about dsl users but I have seen them to increase their speeds by higher RWIN, I am on cable with 1.5MB CAP, but 32767 is____________________:) :)
cablenut
06-05-01, 01:18 PM
Since you can achieve 8.9Mb I think it would be just plain dumb to use a 32767 RWIN.
Limit for given latency:
@ 50ms
655kB/sec
@ 100ms
327kB/sec
@ 150ms
218kB/sec
@ 200ms
183kB/sec
Even @50ms you still can't achieve your full 8.9Mb.
64240
@ 50ms
1284kB/sec
@ 100ms
642kB/sec
@ 150ms
428kB/sec
@ 200ms
321kB/sec
Bandwidth Down 8901 Kbits/sec
Bandwidth Up 884 Kbits/sec
Average Ping 74 ms
Taking your real RWIN used which would of been 64240.
Limit @ 74ms
868kB/sec or 6944Kb (which is NOT 8901 Kb)
Lobo your either lying or the test you used was highly inaccurate please tell me which one.
Test done at pcpitstop using XP, I no lie Sir:) :)
cablenut
06-05-01, 01:23 PM
Well ok then its highly inaccurate...
Well I just did this one, but it's not late at night, oh yea 108 times faster than 56K
Bandwidth Down 7770 Kbits/sec
Bandwidth Up 1167 Kbits/sec
Average Ping 55 ms
Ping Loss 0%
TCP Receive Window xx
External IP Address xxxxxxxxxxxx
Internal IP Address xxxxxxxxxxxx
Browser MSIE 6.0b; 5.1
IE current cache 0 MB
IE max cache 10 MB
:) :)
cablenut
06-05-01, 01:31 PM
Bandwidth Down 7770 Kbits/sec
Bandwidth Up 1167 Kbits/sec
Average Ping 55 ms
Limt @ 55ms
1168kB or 9344Kb
Unlike your first test this one is more believable :)
I won't test late at night again, I promise Sir, I don't know if it's right or wrong but XP is quicker and I am waiting on new version anyday and my 3Com NIC tomorrow:) :)
Cablenut, do you think the new version of XP will give you the choice of uninstalling previous versions, I have plenty of space 30) GiG HD) but would rather have it on by itself and realize I will have to put some things back on or does it make a difference:) :)
AtlasFBG2
06-05-01, 05:57 PM
Perhaps your cable compnay is telling you your capped at 1.5 when actually they have not yet capped you.Check this out i can double my speed useing them same 32767 rwin.lmao
Text Block Size 5000 KB
Download Time 20440 ms
Receive Buffer 32767 bytes
Transmission Speed 1957 Kb/s
Text Block Size 50 KB
Download Time 50 ms
Receive Buffer 32767 bytes
Transmission Speed 8000 Kb/s
cablenut
06-05-01, 06:14 PM
Yes Atlas
If you do use PcPit stop make sure to use the 5MB test.
Text Block Size 50 KB
Download Time 50 ms
Receive Buffer 32767 bytes
Transmission Speed 8000 Kb/s
A 50kB test file will have a "large" margin of error as you can see. This is why the "free" DSL(r) test isn't that accurate because it uses only a 100kB test file. I think if you pay for the "premium" service you get a bigger test file.
Don't laugh, Tandy Corp NIC, tomorrow 3Com, plus it's night time
Text Block Size 5000 KB
Download Time 7591 ms
Receive Buffer xxxxxxxbytes
Transmission Speed 5269 Kb/s
:) :)
AtlasFBG2
06-05-01, 06:24 PM
Yeah i know just trying to be funny.Heres one after speedguides tweak patch.
Text Block Size 5000 KB
Download Time 20270 ms
Receive Buffer 256960 bytes
Transmission Speed 1973 Kb/s
and just for giggles again the modem test
Text Block Size 50 KB
Download Time 110 ms
Receive Buffer 256960 bytes
Transmission Speed 3636 Kb/s
AtlasFBG2
06-05-01, 06:30 PM
lobo run this test useing the 10 meg file.http://speedtest.mybc.com
Hmm it wont copy and paste. i get 1.8140589 throughput with the speed guide tweak.Theres now way your caped geting them speeds.
Turned on after burners for this one (Turned stuff off)
Text Block Size 5000 KB
Download Time 5949 ms
Receive Buffer xxxxxxx bytes
Transmission Speed 6724 Kb/s
:) :) :)
Starting download test
Http request: http://speedtest.mybc.com/10meg.test
Http connection opened in 0 milliseconds
Test performed in 23904 milliseconds
Total bytes downloaded: 10485760 bytes
Throughput: 3.3467202 Mbps
:)
AtlasFBG2
06-05-01, 06:45 PM
whats your secret settings?
TCP options string = 020405b40103030201010402
MTU = 1500
MTU is fully optimized for broadband.
MSS = 1460
Maximum useful data in each packet = 1460, which is equal to MSS.
Default Receive Window (RWIN) = 256960
RWIN Scaling (RFC1323) = 2 bits
Unscaled Receive Window = 64240
RWIN is a multiple of MSS
Other values for RWIN that might work well with your current MTU/MSS:
513920 (MSS x 44 * scale factor of 8)
128480 (MSS x 44 * scale factor of 2)
64240 (MSS x 44)
bandwidth * delay product:
Your RcvWindow limits you to: 10278.4 kbps (1284.8 KBytes/s) @ 200ms
Your RcvWindow limits you to: 4111.36 kbps (513.92 KBytes/s) @ 500ms
MTU Discovery (RFC1191) = ON
Time to live left = 48 hops
TTL value is ok.
Timestamps (RFC1323) = OFF
Selective Acknowledgements (RFC2018) = ON
IP type of service field (RFC1349)= 00000000
AtlasFBG2
06-05-01, 07:10 PM
She hit the bloody cap mate and wont go no higher.Cable nut 4.02 with higher rwin.
Text Block Size 5000 KB
Download Time 20490 ms
Receive Buffer 513920 bytes
Transmission Speed 1952 Kb/s
TCP options string = 020405b40103030301010402
MTU = 1500
MTU is fully optimized for broadband.
MSS = 1460
Maximum useful data in each packet = 1460, which is equal to MSS.
Default Receive Window (RWIN) = 513920
RWIN Scaling (RFC1323) = 3 bits
Unscaled Receive Window = 64240
RWIN is a multiple of MSS
Other values for RWIN that might work well with your current MTU/MSS:
256960 (MSS x 44 * scale factor of 4)
128480 (MSS x 44 * scale factor of 2)
64240 (MSS x 44)
bandwidth * delay product:
Your RcvWindow limits you to: 20556.8 kbps (2569.6 KBytes/s) @ 200ms
Your RcvWindow limits you to: 8222.72 kbps (1027.84 KBytes/s) @ 500ms
MTU Discovery (RFC1191) = ON
Time to live left = 32 hops
TTL value is ok.
Timestamps (RFC1323) = OFF
Selective Acknowledgements (RFC2018) = ON
IP type of service field (RFC1349)= 00000000
You need a no CAP limit, mate:) :) :)
puhbare
06-06-01, 03:07 PM
Originally posted by jarablue
I seem to be stuck at 179-180KB for downloading. Although I get an initial burst speed of 500-800KB it doesn't stay there.
If your cap is 1.5Mbs then your download speed is really close to your cap. 1.5Mbs/8= 187.5 KB/s... that's like 95-96% of thoroughput.... Excellent
I wish I could get that lucky. I only get 75% or less.
puhbare
06-06-01, 03:19 PM
Originally posted by Lobo
Cablenut, do you think the new version of XP will give you the choice of uninstalling previous versions, I have plenty of space 30) GiG HD) but would rather have it on by itself and realize I will have to put some things back on or does it make a difference:) :)
Lobo, I have build 2475 and I don't have control of my RWIN. Even using Cablenut RWIn in 3 places, I get unusually low (-65000) and won't set any higher. Tcp132Opts enabled and all. It could have something to do with their user friendly internet connection setup. I hope that you can break their code when you get your copy.
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