8 replies to this topic

[Minstrel]

Hi group! Can't believe it's been 3 years since I've last posted in here. As I seem to remember my last post, I was complaining that my speeds from RCN were not up to specs and had given up on any success to achieve the advertised results. Well, after numerous attempts with other sources. I went back to Cablenut after finding out that there were new updates available. After getting the correct info from RCN about caps and a few attempts with j79zlr's tweak tool, I have achieved  the following results...
:::.. testmy.net test results ..:::

Download Connection is:: 14140 Kbps about 14.14 Mbps (tested with 12288 kB)
Download Speed is:: 1726 kB/s
Upload Connection is:: 393 Kbps about 0.4 Mbps (tested with 1496 kB)
Upload Speed is:: 48 kB/s
Tested From:: http://testmy.net (Main)
Test Time:: 2009/09/26 - 3:51pm
D-Validation Link:: http://testmy.net/stats/id-056HDAP4L
U-Validation Link:: http://testmy.net/stats/id-4HYGE6IMA
User Agent:: Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.9.1.3) Gecko/20090824 Firefox/3.5.3 (.NET CLR 3.5.30729) [!]

As you can imagine, I am happy with DL speeds in this range since my last post. It isn't an awesome speed, but, it is acceptable. However, the UL speed is still ridiculously slow. I am still trying to figure out why it is so poor. If anyone has any other suggestions to my issue please respond. All I can tell you is that RCN's UL ratelimit cap claims to be 800000. I have tried everything I know to increase my upload speed without success. Any input is welcomed.

[Minstrel]

Here's an update for all the RCN users out there. After using RCN's new beta speed test (http://pa.speedtest.rcn.net/newtest/) the results are much different from those here at testmy.net. According to RCN, my speeds are  "Max Download Speed: 6.97Mbps (or 55760 kbps)" and "Max Upload Speed: 1.38Mbps (or 11040 kbps)". Now, can someone please explain the discrepancy in these two location speed tests? They were only taken 5 min. apart.

[mudmanc4]

thats a good one ! usually its the other way around because the ISP tests within there network.

The link here will do some extensive tests nd give you results. please post that .   and the rest of the results in there http://ndt.anl.gov/

[Minstrel]

Sorry mudmanc4, I can't connect  to http://ndt.anl.gov/, security settings in my browser is blocking it.

[Minstrel]

Ok, I ran it in IE8, seems that my Java Runtime Environment was disabled... anyways, here's the results.

TCP/Web100 Network Diagnostic Tool v5.5.4b
click START to begin

** Starting test 1 of 1 **
Connected to: ndt.anl.gov  --  Using IPv4 address
Another client is currently being served, your test will begin within 45 seconds
Checking for Middleboxes . . . . . . . . . . . . . . . . . .  Done
checking for firewalls . . . . . . . . . . . . . . . . . . .  Done
running 10s outbound test (client-to-server [C2S]) . . . . . 761.0kb/s
running 10s inbound test (server-to-client [S2C]) . . . . . . 7.33Mb/s
Your PC is connected to a Cable/DSL modem
Information: Other network traffic is congesting the link

here's the the stat details...

WEB100 Enabled Statistics:
Checking for Middleboxes . . . . . . . . . . . . . . . . . .  Done
checking for firewalls . . . . . . . . . . . . . . . . . . .  Done
running 10s outbound test (client-to-server [C2S]) . . . . . 761.0kb/s
running 10s inbound test (server-to-client [S2C]) . . . . . . 7.33Mb/s

------  Client System Details  ------
OS data: Name = Windows XP, Architecture = x86, Version = 5.1
Java data: Vendor = Sun Microsystems Inc., Version = 1.6.0_16

------  Web100 Detailed Analysis  ------
Cable modem/DSL/T1 link found.
Link set to Full Duplex mode
Information: throughput is limited by other network traffic.
Good network cable(s) found
Normal duplex operation found.

Web100 reports the Round trip time = 79.01 msec; the Packet size = 1460 Bytes; and
There were 99 packets retransmitted, 345 duplicate acks received, and 307 SACK blocks received
The connection stalled 3 times due to packet loss
The connection was idle 0.85 seconds (8.5%) of the time
S2C throughput test: Packet queuing detected: 0.88%
This connection is sender limited 49.76% of the time.
This connection is network limited 50.23% 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

Server 'ndt.anl.gov' is probably behind a firewall. [Connection to the ephemeral port failed]
Client is probably behind a firewall. [Connection to the ephemeral port failed]
Packet size is preserved End-to-End
Server IP addresses are preserved End-to-End
Information: Network Address Translation (NAT) box is modifying the Client's IP address
Server says [216.164.xxx.xxx] but Client says [192.168.1.100]

and here's the "more details" screen...

WEB100 Kernel Variables:
Client: localhost/127.0.0.1
CurMSS: 1460
X_Rcvbuf: 262142
X_Sndbuf: 262142
AckPktsIn: 2204
AckPktsOut: 0
BytesRetrans: 144540
CongAvoid: 0
CongestionOverCount: 0
CongestionSignals: 3
CountRTT: 1826
CurCwnd: 97820
CurRTO: 284
CurRwinRcvd: 513920
CurRwinSent: 5888
CurSsthresh: 77380
DSACKDups: 0
DataBytesIn: 0
DataBytesOut: 9355660
DataPktsIn: 0
DataPktsOut: 6392
DupAcksIn: 345
ECNEnabled: 0
FastRetran: 3
MaxCwnd: 195640
MaxMSS: 1460
MaxRTO: 324
MaxRTT: 176
MaxRwinRcvd: 513920
MaxRwinSent: 5888
MaxSsthresh: 137240
MinMSS: 1460
MinRTO: 244
MinRTT: 44
MinRwinRcvd: 513920
MinRwinSent: 5840
NagleEnabled: 1
OtherReductions: 3
PktsIn: 2204
PktsOut: 6392
PktsRetrans: 99
RcvWinScale: 7
SACKEnabled: 3
SACKsRcvd: 307
SendStall: 0
SlowStart: 0
SampleRTT: 84
SmoothedRTT: 84
SndWinScale: 3
SndLimTimeRwin: 0
SndLimTimeCwnd: 5140457
SndLimTimeSender: 5090614
SndLimTransRwin: 0
SndLimTransCwnd: 885
SndLimTransSender: 885
SndLimBytesRwin: 0
SndLimBytesCwnd: 8746260
SndLimBytesSender: 609400
SubsequentTimeouts: 0
SumRTT: 144276
Timeouts: 3
TimestampsEnabled: 0
WinScaleRcvd: 3
WinScaleSent: 7
DupAcksOut: 0
StartTimeUsec: 786485
Duration: 10234165
c2sData: 2
c2sAck: 2
s2cData: 3
s2cAck: 3
half_duplex: 0
link: 0
congestion: 1
bad_cable: 0
mismatch: 0
spd: 7.32
bw: 6.51
loss: 0.000469337
avgrtt: 79.01
waitsec: 0.85
timesec: 10.00
order: 0.1565
rwintime: 0.0000
sendtime: 0.4976
cwndtime: 0.5024
rwin: 3.9209
swin: 2.0000
cwin: 1.4926
rttsec: 0.079012
Sndbuf: 262142
aspd: 0.00000
CWND-Limited: 501.83
minCWNDpeak: 2920
maxCWNDpeak: 194180
CWNDpeaks: 4

The theoretical network limit is 6.51 Mbps
The NDT server has a 127.0 KByte buffer which limits the throughput to 25.31 Mbps
Your PC/Workstation has a 501.0 KByte buffer which limits the throughput to 49.62 Mbps
The network based flow control limits the throughput to 18.89 Mbps

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

What do think the problem is mud...?

[Minstrel]

BTW, here's the most recent speed check...
:::.. Download Stats ..:::
Download Connection is:: 12368 Kbps about 12.4 Mbps (tested with 12288 kB)
Download Speed is:: 1510 kB/s
Tested From:: http://testmy.net/ (Main)
Test Time:: 2009/10/14 - 11:15am
Bottom Line:: 216X faster than 56K 1MB Download in 0.68 sec
Tested from a 12288 kB file and took 8.139 seconds to complete
Download Diagnosis:: Awesome! 20% + : 139.83 % faster than the average for host (rcn.com)
D-Validation Link:: http://testmy.net/stats/id-VU4ATQND1
User Agent:: Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.9.1.3) Gecko/20090824 Firefox/3.5.3 (.NET CLR 3.5.30729) [!]

And the Upload...
:::.. Upload Stats ..:::
Upload Connection is:: 749 Kbps about 0.7 Mbps (tested with 1496 kB)
Upload Speed is:: 91 kB/s
Tested From:: http://testmy.net/ (Main)
Test Time:: 2009/10/14 - 11:45am
Bottom Line:: 13X faster than 56K 1MB Upload in 11.25 sec
Tested from a 1496 kB file and took 16.369 seconds to complete
Upload Diagnosis:: Looks Great : 1.77 % faster than the average for host (rcn.com)
U-Validation Link:: http://testmy.net/stats/id-C5HU0V4J2
User Agent:: Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.9.1.3) Gecko/20090824 Firefox/3.5.3 (.NET CLR 3.5.30729) [!]

I guess I shouldn't be complaining, both speeds are above average for RCN.

[mudmanc4]

Seriously, I think you should be good to go, unless of course you know you should be getting much more on the upload, with what you have, thats actually above the average for almost any ISP, or right there with it all. !

[Minstrel]

Yeah mudmanc4, I think you're right. I shouldn't be complaining when both DL & UL is higher than average for RCN. I think I'll just shutup and be happy with what I've got. But that doesn't mean I'm going to stop "tweaking". I'll squeeze every last kbps out of this critter if it's the last thing I do!  Thanks for the help.

[mudmanc4]

Quote

Yeah mudmanc4, I think you're right. I shouldn't be complaining when both DL & UL is higher than average for RCN. I think I'll just shutup and be happy with what I've got. But that doesn't mean I'm going to stop "tweaking". I'll squeeze every last Kbps out of this critter if it's the last thing I do!  Thanks for the help.

Now thats what I'm talkin about