Hi... I just got Comcast Internet service yesterday, the 6Mbps/384Kbps plan, and by my test results, I believe I'm a little slow. Any help will be greatly appreciated.
I have a Motorola SB5101 modem.
SpeedGuide.net TCP/IP Analyzer
TCP properties for IP = ()
Browser/OS = Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:220.127.116.11) Gecko/20060111 Firefox/18.104.22.168
Notes: Read the Analyzer FAQ if the above is not your IP address.
TCP options string = 020405b4
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) = 65535
RWIN Scaling (RFC1323) = 0 bits
Unscaled TCP Receive Window = 65535
Note: TCP 1323 Options need to be enabled for RWIN over 2^16 (65535). Windows 9x might also need the MS Vtcp386 fix.
For optimum performance, consider changing RWIN to a multiple of MSS.
Other values for RWIN that might work well with your current MTU/MSS:
513920 (MSS x 44 * scale factor of
256960 (MSS x 44 * scale factor of 4)
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: 2621.4 kbps (327.675 KBytes/s) @ 200ms
Your TCP Window limits you to: 1048.56 kbps (131.07 KBytes/s) @ 500ms
MTU Discovery (RFC1191) = ON
Time to live left = 113 hops
TTL value is ok.
Timestamps (RFC1323) = OFF
Selective Acknowledgements (RFC2018) = OFF
IP type of service field (RFC1349) = 00000000 (0)
:::.. Download Stats ..:::
Connection is:: 1062 Kbps about 1.1 Mbps (tested with 5983 kB)
Download Speed is:: 130 kB/s
Tested From:: https://testmy.net (server2)
Test Time:: Sat Feb 04 2006 02:32:10 GMT-0400 (Atlantic Standard Time)
Bottom Line:: 19X faster than 56K 1MB download in 7.88 sec
Diagnosis: May need help : running at only 22.32 % of your hosts average (comcast.net)
Validation Link:: https://testmy.net/stats/id-FICQZWU75