ok, reported last week about my Comcast upgrade, 4000/384, and posted great scores with all default settings, as they beat any of the ccs tweak settings in cablenut.  scores are posted in previous post of mine, "Comcast Rockin".

since then i have, as I always do tweaked around with settings, knowing i could always go back to the default, as well as saving my own custom settings in cablenut.  i could get a high score now and then with cablenut settings but not consistently close to being the same.  i also unloaded cablenut and tried tcp optimizer, but it too couldn't come close to the default scores.

the other day i put the settings all back to default and now these scores are lower, close to the best scores i can get with default settings.  so i'm thinking that when the upgrade came out Comcast delivered more than the upgrade, or some how i was just getting more than advertised at 4000/384, and now they have it back down to what was advertised?  I don't know, just trying to figure it out?

VB, here's some scores from just a little while ago, plus the report from nitro, maybe you see some thing that might help, even though i know that i am getting the 90% of download, and close with upload, which doesn't concern me all that much, at least not now.

::::::::::.. Download Stats ..::::::::::
Connection is:: 3726 Kbps about 3.7 Mbps (tested with 2992 KB)
Download Speed is:: 455 kB/s
Tested From:: http://www.testmy.net/
Test Time:: Tue Feb 1 17:42:26 PST 2005
Bottom Line:: 67X faster than 56K 1MB download in 2.25 sec
Validation Link:: http://testmy.net/id-RIEDLBS8V

TCP/Web100 Network Diagnostic Tool v5.2.1e
click START to begin
Checking for Middleboxes . . . . . . . . . . . . . . . . . .  Done
running 10s outbound test (client to server) . . . . . 402.53kB/s
running 10s inbound test (server to client) . . . . . . 3.75Mb/s
Your PC is connected to a Cable/DSL modem

click START to re-test

Cable modem/DSL/T1 link found.
Link set to Full Duplex mode
No network congestion discovered.
Good network cable(s) found
Normal duplex operation found.

Web100 reports the Round trip time = 50.78 msec; the Packet size = 1460 Bytes; and
There were 98 packets retransmitted, 181 duplicate acks received, and 213 SACK blocks received
The connection stalled 1 times due to packet loss
The connection was idle 0.26 seconds (2.6%) of the time
This connection is network limited 99.36% of the time.
  Contact your local network administrator to report a network problem

    Web100 reports TCP negotiated the optional Performance Settings to:
RFC 2018 Selective Acknowledgment: ON
RFC 896 Nagle Algorithm: ON
RFC 3168 Explicit Congestion Notification: OFF
RFC 1323 Time Stamping: OFF
RFC 1323 Window Scaling: ON
Packet size is preserved End-to-End
Server IP addresses are preserved End-to-End
Client IP addresses are preserved End-to-End

WEB100 Kernel Variables:
Client: localhost/127.0.0.1
AckPktsIn: 1724
AckPktsOut: 0
BytesRetrans: 143080
CongAvoid: 1370
CongestionOverCount: 0
CongestionSignals: 10
CountRTT: 1508
CurCwnd: 30660
CurMSS: 1460
CurRTO: 260
CurRwinRcvd: 100740
CurRwinSent: 5840
CurSsthresh: 16060
DSACKDups: 0
DataBytesIn: 0
DataBytesOut: 4815080
DataPktsIn: 0
DataPktsOut: 3298
DupAcksIn: 181
ECNEnabled: 0
FastRetran: 9
MaxCwnd: 102200
MaxMSS: 1460
MaxRTO: 280
MaxRTT: 110
MaxRwinRcvd: 100740
MaxRwinSent: 5840
MaxSsthresh: 51100
MinMSS: 1460
MinRTO: 240
MinRTT: 30
MinRwinRcvd: 50370
MinRwinSent: 5840
NagleEnabled: 1
OtherReductions: 0
PktsIn: 1724
PktsOut: 3298
PktsRetrans: 98
X_Rcvbuf: 103424
SACKEnabled: 3
SACKsRcvd: 213
SendStall: 0
SlowStart: 121
SampleRTT: 50
SmoothedRTT: 60
X_Sndbuf: 103424
SndLimTimeRwin: 58079
SndLimTimeCwnd: 9960261
SndLimTimeSender: 5168
SndLimTransRwin: 1
SndLimTransCwnd: 2
SndLimTransSender: 1
SndLimBytesRwin: 51100
SndLimBytesCwnd: 4762520
SndLimBytesSender: 0
SubsequentTimeouts: 0
SumRTT: 76590
Timeouts: 1
TimestampsEnabled: 0
WinScaleRcvd: 1
WinScaleSent: 7
DupAcksOut: 0
StartTimeUsec: 244137
Duration: 10038608
c2sData: 2
c2sAck: 2
s2cData: 9
s2cAck: 3

Checking for mismatch condition
   (cwndtime > .3) [0.99>.3], (MaxSsthresh > 0) [51100>0],
    (PktsRetrans/sec > 2) [9.80>2], (estimate > 2) [3.98>2]
Checking for mismatch on uplink
   (speed > 50 [3.84>50], (xmitspeed < 5) [0.40<5]
   (rwintime > .9) [0.00>.9], (loss < .01) [0.00<.01]
Checking for excessive errors condition
   (loss/sec > .15) [3.03>.15], (cwndtime > .6) [0.99>.6],
   (loss < .01) [0.00<.01], (MaxSsthresh > 0) [51100>0]
Checking for 10 Mbps link
   (speed < 9.5) [3.84<9.5], (speed > 3.0) [3.84>3.0]
   (xmitspeed < 9.5) [0.40<9.5] (loss < .01) [0.00<.01], (link > 0) [100>0]
Checking for Wireless link
   (sendtime = 0) [5.15=0], (speed < 5) [3.84<5]
   (Estimate > 50 [3.98>50], (Rwintime > 90) [0.00>.90]
    (RwinTrans/CwndTrans = 1) [1/2=1], (link > 0) [100>0]
Checking for DSL/Cable Modem link
   (speed < 2) [3.84<2], (SndLimTransSender = 0) [1=0]
    (SendTime = 0) [5.155879558334268E-4=0], (link > 0) [100>0]
Checking for half-duplex condition
   (rwintime > .95) [0.00>.95], (RwinTrans/sec > 30) [0.10>30],
    (SenderTrans/sec > 30) [0.10>30], OR (link <= 10) [100<=10]
Checking for congestion
   (cwndtime > .02) [0.99>.02], (mismatch = 0) [0=0]
   (MaxSsthresh > 0) [51100>0]

bw = 3.98 based on packet size = 11Kbits, RTT = 50.78msec, and loss = 0.003032140666618943
The theoretical network limit is 3.98 Mbps
The transmit buffer (101.0 KByte) limits the application to 15.53 Mbps
Your receive buffer (98.0 KByte) limits the application to 15.13 Mbps
The network based flow control limits the application to 15.35 Mbps

Client Data reports link is 'T1', Client Acks report link is 'T1'
Server Data reports link is '10 Gig', Server Acks report link is 'Ethernet'

my settings

defaultreceivewindow 100740
defaultsendwindow 49152

large buffer 81920
medium buffer 15040
small buffer 1280
globalmaxtcpwindowsize 256960
tcp1232 1
dupacks 2
tcpwindow 256960

if you can take a look at this, great, appreciate it, no hurry, at your leisure
thanxz
River~

VB,

first of all, many thanks for taking the time, and I'm always happy, but a tweaker is never satisfied

question if I may?

pros and cons about the QoS packet scheduler tweak, i have it tweaked, as well as Link Speed & Duplex set to Auto Detect.  have tried with tweaks on and off, seem to increase through put some.  your feelings?

again, many thanxz
River~

i run cable modem only, ran three sets of tests, testing up and down, with link/duplex set on "auto" another at 100/half, and another at 10/half, with QoS disabled.

here's earlier scores with QoS enabled/auto detect
down: 3844/469
up    :    359/44

QoS disabled/auto detect
down: 3807/465
up:       359/44

QoS disabled 100/half duplex
down: 3798/464
up:       359/44

QoS disabled/ 10/half duplex (doesn't like this!)
down: 2324/284
up:       359/44

used gpedit, and also unchecked in network connections.  will test the 100/full in a second

Half

::::::::::.. Download Stats ..::::::::::
Connection is:: 5290 Kbps about 5.3 Mbps (tested with 5983 KB)
Download Speed is:: 646 kB/s
Tested From:: http://www.testmy.net/
Test Time:: Wed Feb 02 2005 11:19:12 GMT-0500 (Eastern Standard Time)
Bottom Line:: 94X faster than 56K 1MB download in 1.59 sec
Validation Link:: http://testmy.net/id-MYGES5TDN


Full

::::::::::.. Download Stats ..::::::::::
Connection is:: 5371 Kbps about 5.4 Mbps (tested with 5983 KB)
Download Speed is:: 656 kB/s
Tested From:: http://www.testmy.net/
Test Time:: Wed Feb 02 2005 11:20:10 GMT-0500 (Eastern Standard Time)
Bottom Line:: 96X faster than 56K 1MB download in 1.56 sec
Validation Link:: http://testmy.net/id-94IPVBHXS

:s