dlai
-
Posts
10 -
Joined
-
Last visited
Never -
Speed Test
My Results
Posts posted by dlai
-
-
Here's an interesting update. It appears that some IBM Thinkpads use an Intel Pro 2200BG mini pci card which has a problem connecting to Linksys routers. The symptoms are slow wireless access, and transmit speeds that start at 54 Mbps and then slows down to 24 mpbs, exactly the problems I'm having. This problem is widespread and the fix is replacing that card with a newer IBM a/b/g card based on the Atheros chipset. This is what I'm going to do and have contacted an IBM warranty center already. So for anyone that has a Thinkpad with speed issues or connection drops, that is the fix...
-
Fallow, thanks for the link. It's not the case with the problem I'm experiencing. Signal strength is at the max, and I don't experience the same issues with the other laptops I have, only with the one in question. My wap has a 7db antenna as well, and the problem still occurs if I'm sitting right next to the wap with this one laptop in question.
I did load the new drivers last night with no improvements in the performance, sad to say. So I'm inclined to think that there is something wrong with the built-in wireless nic in the laptop. This morning I did a direct connect to my router via an ethernet cable and got 7mb right away, so that pretty much seals it in my mind that it's the wireless nic that's at fault.
-
Will do. I just went to the IBM website and noticed there's some new drivers related to the networking components, including a new one for the nic. It's downloading now (remembering that it's slow on that computer), so it will take a while, but I'll retest things when it's done. I really appreciate your help, and steering me in the right direction....
-
Thanks for your time and help. Guess I'll have to figure out how to get the laptop repaired.
Thanks again.
-
Same connection, different laptops both with built in wireless. I'm guessing then that the IBM might have a defective NIC, correct?
-
BUT, here's the results from my other laptop, much different results:
WEB100 Kernel Variables:
Client: localhost/127.0.0.1
AckPktsIn: 3154
AckPktsOut: 0
BytesRetrans: 102200
CongAvoid: 2940
CongestionOverCount: 0
CongestionSignals: 5
CountRTT: 2983
CurCwnd: 40880
CurMSS: 1460
CurRTO: 270
CurRwinRcvd: 921600
CurRwinSent: 16304
CurSsthresh: 5840
DSACKDups: 0
DataBytesIn: 0
DataBytesOut: 8957100
DataPktsIn: 0
DataPktsOut: 6135
DupAcksIn: 142
ECNEnabled: 0
FastRetran: 5
MaxCwnd: 91980
MaxMSS: 1460
MaxRTO: 300
MaxRTT: 110
MaxRwinRcvd: 921600
MaxRwinSent: 16304
MaxSsthresh: 45260
MinMSS: 1460
MinRTO: 220
MinRTT: 20
MinRwinRcvd: 57600
MinRwinSent: 16304
NagleEnabled: 1
OtherReductions: 0
PktsIn: 3154
PktsOut: 6135
PktsRetrans: 70
X_Rcvbuf: 103424
RcvWinScale: 7
SACKEnabled: 3
SACKsRcvd: 160
SendStall: 0
SlowStart: 41
SampleRTT: 30
SmoothedRTT: 70
X_Sndbuf: 103424
SndWinScale: 4
SndLimTimeRwin: 0
SndLimTimeCwnd: 10039806
SndLimTimeSender: 2584
SndLimTransRwin: 0
SndLimTransCwnd: 1
SndLimTransSender: 1
SndLimBytesRwin: 0
SndLimBytesCwnd: 8957100
SndLimBytesSender: 0
SubsequentTimeouts: 0
SumRTT: 151380
Timeouts: 0
TimestampsEnabled: 0
WinScaleRcvd: 4
WinScaleSent: 7
DupAcksOut: 0
StartTimeUsec: 727412
Duration: 10045535
c2sData: 2
c2sAck: 2
s2cData: 9
s2cAck: 3
half_duplex: 0
link: 100
congestion: 1
bad_cable: 0
mismatch: 0
spd: 0.00
bw: 7.69
loss: 0.000814996
avgrtt: 50.75
waitsec: 0.00
timesec: 10.00
order: 0.0450
rwintime: 0.0000
sendtime: 0.0003
cwndtime: 0.9997
rwin: 7.0312
swin: 64.0000
cwin: 0.7018
rttsec: 0.050748
Sndbuf: 8388608
aspd: 19.86236
Checking for mismatch on uplink
(speed > 50 [0>50], (xmitspeed < 5) [0.40<5]
(rwintime > .9) [0>.9], (loss < .01) [8.14<.01]
Checking for excessive errors condition
(loss/sec > .15) [8.14>.15], (cwndtime > .6) [0.99>.6],
(loss < .01) [8.14<.01], (MaxSsthresh > 0) [45260>0]
Checking for 10 Mbps link
(speed < 9.5) [0<9.5], (speed > 3.0) [0>3.0]
(xmitspeed < 9.5) [0.40<9.5] (loss < .01) [8.14<.01], (mylink > 0) [3.0>0]
Checking for Wireless link
(sendtime = 0) [3.0E=0], (speed < 5) [0<5]
(Estimate > 50 [7.69>50], (Rwintime > 90) [0>.90]
(RwinTrans/CwndTrans = 1) [0/1=1], (mylink > 0) [3.0>0]
Checking for DSL/Cable Modem link
(speed < 2) [0<2], (SndLimTransSender = 0) [1=0]
(SendTime = 0) [3.0E-4=0], (mylink > 0) [3.0>0]
Checking for half-duplex condition
(rwintime > .95) [0>.95], (RwinTrans/sec > 30) [0>30],
(SenderTrans/sec > 30) [0.1>30], OR (mylink <= 10) [3.0<=10]
Checking for congestion
(cwndtime > .02) [0.99>.02], (mismatch = 0) [0=0]
(MaxSsthresh > 0) [45260>0]
estimate = 7.69 based on packet size = 11Kbits, RTT = 50.75msec, and loss = 8.14996E-4
The theoretical network limit is 7.69 Mbps
The NDT server has a 8192.0 KByte buffer which limits the throughput to 1261.13 Mbps
Your PC/Workstation has a 900.0 KByte buffer which limits the throughput to 138.55 Mbps
The network based flow control limits the throughput to 13.82 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'
The slow laptop is an IBM Thinkpad T42 running XP Pro. The faster one is a Sony PCG K45 running XP Pro as well. I really think there's someone going on with the IBM...
-
Statistics:
WEB100 Enabled Statistics:
Checking for Middleboxes . . . . . . . . . . . . . . . . . . Done
running 10s outbound test (client to server) . . . . . 365.75Kb/s
running 10s inbound test (server to client) . . . . . . 523.94kb/s
------ Client System Details ------
OS data: Name = Windows XP, Architecture = x86, Version = 5.1
Java data: Vendor = Sun Microsystems Inc., Version = 1.5.0_06
------ Web100 Detailed Analysis ------
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 = 2023.33 msec; the Packet size = 1460 Bytes; and
No packet loss was observed.
This connection is receiver limited 37.47% of the time.
Increasing the the client's receive buffer (196.0 KB) will improve performance
This connection is network limited 62.51% of the time.
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
More Details:
WEB100 Kernel Variables:
Client: localhost/127.0.0.1
AckPktsIn: 193
AckPktsOut: 0
BytesRetrans: 0
CongAvoid: 0
CongestionOverCount: 0
CongestionSignals: 0
CountRTT: 192
CurCwnd: 202940
CurMSS: 1460
CurRTO: 6740
CurRwinRcvd: 201480
CurRwinSent: 16304
CurSsthresh: 2147483647
DSACKDups: 0
DataBytesIn: 0
DataBytesOut: 747520
DataPktsIn: 0
DataPktsOut: 512
DupAcksIn: 0
ECNEnabled: 0
FastRetran: 0
MaxCwnd: 202940
MaxMSS: 1460
MaxRTO: 6740
MaxRTT: 4980
MaxRwinRcvd: 201480
MaxRwinSent: 16304
MaxSsthresh: 0
MinMSS: 1460
MinRTO: 270
MinRTT: 70
MinRwinRcvd: 50370
MinRwinSent: 16304
NagleEnabled: 1
OtherReductions: 0
PktsIn: 193
PktsOut: 512
PktsRetrans: 0
X_Rcvbuf: 103424
RcvWinScale: 7
SACKEnabled: 3
SACKsRcvd: 0
SendStall: 0
SlowStart: 137
SampleRTT: 4980
SmoothedRTT: 4770
X_Sndbuf: 103424
SndWinScale: 2
SndLimTimeRwin: 4075299
SndLimTimeCwnd: 6798850
SndLimTimeSender: 2574
SndLimTransRwin: 1
SndLimTransCwnd: 1
SndLimTransSender: 1
SndLimBytesRwin: 157680
SndLimBytesCwnd: 589840
SndLimBytesSender: 0
SubsequentTimeouts: 0
SumRTT: 388480
Timeouts: 0
TimestampsEnabled: 0
WinScaleRcvd: 2
WinScaleSent: 7
DupAcksOut: 0
StartTimeUsec: 659258
Duration: 10880006
c2sData: 2
c2sAck: 2
s2cData: 9
s2cAck: 2
half_duplex: 0
link: 100
congestion: 0
bad_cable: 0
mismatch: 0
spd: 0.00
bw: 5.51
loss: 0.000001000
avgrtt: 2023.33
waitsec: 0.00
timesec: 10.00
order: 0.0000
rwintime: 0.3747
sendtime: 0.0002
cwndtime: 0.6251
rwin: 1.5372
swin: 64.0000
cwin: 1.5483
rttsec: 2.023333
Sndbuf: 8388608
aspd: 1.85072
Checking for mismatch on uplink
(speed > 50 [0>50], (xmitspeed < 5) [0.36<5]
(rwintime > .9) [0.37>.9], (loss < .01) [1.0E<.01]
Checking for excessive errors condition
(loss/sec > .15) [1.0E>.15], (cwndtime > .6) [0.62>.6],
(loss < .01) [1.0E<.01], (MaxSsthresh > 0) [0>0]
Checking for 10 Mbps link
(speed < 9.5) [0<9.5], (speed > 3.0) [0>3.0]
(xmitspeed < 9.5) [0.36<9.5] (loss < .01) [1.0E<.01], (mylink > 0) [3.0>0]
Checking for Wireless link
(sendtime = 0) [2.0E=0], (speed < 5) [0<5]
(Estimate > 50 [5.51>50], (Rwintime > 90) [0.37>.90]
(RwinTrans/CwndTrans = 1) [1/1=1], (mylink > 0) [3.0>0]
Checking for DSL/Cable Modem link
(speed < 2) [0<2], (SndLimTransSender = 0) [1=0]
(SendTime = 0) [2.0E-4=0], (mylink > 0) [3.0>0]
Checking for half-duplex condition
(rwintime > .95) [0.37>.95], (RwinTrans/sec > 30) [0.1>30],
(SenderTrans/sec > 30) [0.1>30], OR (mylink <= 10) [3.0<=10]
Checking for congestion
(cwndtime > .02) [0.62>.02], (mismatch = 0) [0=0]
(MaxSsthresh > 0) [0>0]
estimate = 5.51 based on packet size = 11Kbits, RTT = 2023.33msec, and loss = 1.0E-6
The theoretical network limit is 5.51 Mbps
The NDT server has a 8192.0 KByte buffer which limits the throughput to 31.63 Mbps
Your PC/Workstation has a 196.0 KByte buffer which limits the throughput to 0.75 Mbps
The network based flow control limits the throughput to 0.76 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 'T1'
-
I'm hoping someone can help me with some speed issues I'm having. I have two laptops using XP connecting to a 6mb Comcastconnection via wireless G. I've loaded cablenut and TCP optimizer on both and have the settings equal on both computers. However, one is able to connect at 7mb and the other only at 387 kbps. Upload is slow too. I can't figure out for the life of me why this one laptop is so slow. Hopefully someone can help out with some suggestions.
Here's some data:
TCP properties for IP = (xxxxxx)
Browser/OS = Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.7.12) Gecko/20050915 Firefox/1.0.7
Notes: Read the Analyzer FAQ if the above is not your IP address.
TCP options string = 020405b40103030201010402
MTU = 1500
MTU is fully optimized for broadband.
MSS = 1460
Maximum useful data in each packet = 1460, which equals MSS.
Default TCP Receive Window (RWIN) = 256960
RWIN Scaling (RFC1323) = 2 bits (scale factor of 4)
Unscaled TCP 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
128480 (MSS x 44 * scale factor of 2)
64240 (MSS x 44)
bandwidth * delay product (Note this is not a speed test):
Your TCP Window limits you to: 10278.4 kbps (1284.8 KBytes/s) @ 200ms
Your TCP Window limits you to: 4111.36 kbps (513.92 KBytes/s) @ 500ms
MTU Discovery (RFC1191) = OFF
Time to live left = 51 hops
TTL value is ok.
Timestamps (RFC1323) = OFF
Selective Acknowledgements (RFC2018) = ON
IP type of service field (RFC1349) = 00100000 (32)
Precedence (priority) = 001 (priority)
Delay = 0 (normal delay)
Throughput = 0 (normal throughput)
Reliability = 0 (normal reliability)
Cost = 0 (normal cost)
Check bit = 0 (correct, 8th checking bit must be zero)
DiffServ (RFC 2474) = CS1 001000 ( - class 1 (RFC 2474). Similar forwarding behavior to the ToS Precedence field.
More stuff:
:::.. Download Stats ..:::
Connection is:: 387 Kbps about 0.4 Mbps (tested with 748 kB)
Download Speed is:: 47 kB/s
Tested From:: https://testmy.net (server2)
Test Time:: Tue Feb 07 2006 16:38:27 GMT-0800 (Pacific Standard Time)
Bottom Line:: 7X faster than 56K 1MB download in 21.79 sec
Diagnosis: May need help : running at only 8.13 % of your hosts average (comcast.net)
Validation Link:: https://testmy.net/stats/id-TWRMQE7CP
-
6mb Plan, San Francisco Area. I did the tests two hours apart and they are pretty much the same:
::.. Download Stats ..:::
Connection is:: 7819 Kbps about 7.8 Mbps (tested with 5983 kB)
Download Speed is:: 954 kB/s
Tested From:: https://testmy.net (server2)
Test Time:: Tue Feb 07 2006 09:17:58 GMT-0800 (Pacific Standard Time)
Bottom Line:: 140X faster than 56K 1MB download in 1.07 sec
Diagnosis: Awesome! 20% + : 64.2 % faster than the average for host (comcast.net)
Validation Link:: https://testmy.net/stats/id-PSE6J95GB
:::.. Download Stats ..:::
Connection is:: 7819 Kbps about 7.8 Mbps (tested with 5983 kB)
Download Speed is:: 954 kB/s
Tested From:: https://testmy.net (server2)
Test Time:: Tue Feb 07 2006 11:18:28 GMT-0800 (Pacific Standard Time)
Bottom Line:: 140X faster than 56K 1MB download in 1.07 sec
Diagnosis: Awesome! 20% + : 64.16 % faster than the average for host (comcast.net)
Validation Link:: https://testmy.net/stats/id-Z2SHOXUF5
Comcast Speeds ONLY!!!!!!
in XFINITY (Comcast Cable Communications)
Posted
Comcast 6mb/384kpbs plan:
:::.. Download Stats ..:::
Connection is:: 8010 Kbps about 8 Mbps (tested with 5983 kB)
Download Speed is:: 978 kB/s
Tested From:: https://testmy.net (server1)
Test Time:: Mon Feb 20 2006 18:21:16 GMT-0800 (Pacific Standard Time)
Bottom Line:: 143X faster than 56K 1MB download in 1.05 sec
Diagnosis: Awesome! 20% + : 67.68 % faster than the average for host (comcast.net)
Validation Link:: https://testmy.net/stats/id-CVW06YAQG