ates Posted January 30, 2005 CID Share Posted January 30, 2005 Could you help lower re-transmitted packets? 1.Winxp sp2 2.Comcast 4mb/384kbps 3.I use DRTCP http://ttester.broadbandreports.com/tweak/block:3b89c93?service=cable&speed=4000&os=winXP&via=normal 5. :::.. Download Stats ..::: Connection is:: 3798 Kbps about 3.8 Mbps (tested with 2992 KB) Download Speed is:: 464 KB/s Tested From:: http://www.testmy.net/ Test Time:: Sun Jan 30 2005 12:08:42 GMT-0800 (Pacific Standard Time) Bottom Line:: 68X faster than 56K 1MB download in 2.21 sec Validation Link:: https://testmy.net/id-BV5LGN63T Tracing route to testmy.net [67.19.36.6] over a maximum of 30 hops: 1 1 ms 2 ms 2 ms 192.168.1.1 2 * * * Request timed out. 3 15 ms 9 ms 10 ms 12.244.22.225 4 11 ms 11 ms 9 ms 12.244.64.154 5 14 ms 14 ms 14 ms 12.119.199.25 6 19 ms 16 ms 17 ms gbr1-p20.st6wa.ip.att.net [12.123.44.146] 7 29 ms 32 ms 30 ms tbr2-cl1.sffca.ip.att.net [12.122.12.113] 8 38 ms 42 ms 40 ms tbr1-cl3.la2ca.ip.att.net [12.122.10.26] 9 73 ms 75 ms 74 ms tbr1-cl2.dlstx.ip.att.net [12.122.10.49] 10 74 ms 74 ms 75 ms gar1-p360.dlrtx.ip.att.net [12.123.196.101] 11 75 ms 74 ms 74 ms 12.119.136.14 12 74 ms 76 ms 74 ms dist-vlan31.dsr3-2.dllstx3.theplanet.com [70.85. 127.30] 13 75 ms 73 ms 74 ms dist-vlan22.dsr1-2.dllstx2.theplanet.com [70.85. 127.76] 14 75 ms 74 ms 79 ms dsr2-2-v2.dllstx4.theplanet.com [12.96.160.40] 15 80 ms 94 ms 77 ms gig1-0-2.tp-car9-2.dllstx4.theplanet.com [67.18. 116.86] 16 83 ms 76 ms 78 ms 6.67-19-36.reverse.theplanet.com [67.19.36.6] Trace complete. WEB100 Enabled Statistics: Checking for Middleboxes . . . . . . . . . . . . . . . . . . Done running 10s outbound test (client to server) . . . . . 368.39Kb/s running 10s inbound test (server to client) . . . . . . 4.14Mb/s ------ Client System Details ------ OS data: Name = Windows XP, Architecture = x86, Version = 5.1 Java data: Vendor = Sun Microsystems Inc., Version = 1.4.2_04 ------ 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 = 54.73 msec; the Packet size = 1460 Bytes; and There were 37 packets retransmitted, 159 duplicate acks received, and 186 SACK blocks received The connection was idle 0 seconds (0%) of the time This connection is network limited 99.95% 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: OFF Packet size is preserved End-to-End Server IP addresses are preserved End-to-End Thanks! Quote Link to comment Share on other sites More sharing options...
VanBuren Posted January 30, 2005 CID Share Posted January 30, 2005 hey ates and welcome to the forum try this open Dr.Tcp disable Time Stamping and change RWIN to 64240 click save reboot and do a new test VanBuren Quote Link to comment Share on other sites More sharing options...
ates Posted January 30, 2005 Author CID Share Posted January 30, 2005 WEB100 Enabled Statistics: Checking for Middleboxes . . . . . . . . . . . . . . . . . . Done running 10s outbound test (client to server) . . . . . 373.55Kb/s running 10s inbound test (server to client) . . . . . . 4.09Mb/s ------ Client System Details ------ OS data: Name = Windows XP, Architecture = x86, Version = 5.1 Java data: Vendor = Sun Microsystems Inc., Version = 1.4.2_04 ------ 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 = 53.11 msec; the Packet size = 1460 Bytes; and There were 55 packets retransmitted, 236 duplicate acks received, and 259 SACK blocks received The connection stalled 1 times due to packet loss The connection was idle 0.24 seconds (2.4%) of the time This connection is receiver limited 4.44% of the time. Increasing the current receive buffer (62.0 KB) will improve performance This connection is network limited 95.51% 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: OFF Packet size is preserved End-to-End Server IP addresses are preserved End-to-End Quote Link to comment Share on other sites More sharing options...
VanBuren Posted January 30, 2005 CID Share Posted January 30, 2005 lower your RWIN in steps of 1460, so the next value is 64240-1460 = 62780 and the next 62780 - 1460 = 61320 good luck VanBuren Quote Link to comment Share on other sites More sharing options...
ates Posted January 30, 2005 Author CID Share Posted January 30, 2005 allright will do Thanks Quote Link to comment Share on other sites More sharing options...
Indestructable Posted January 30, 2005 CID Share Posted January 30, 2005 where do you guys get that web100 tool from? I forgot the address. Quote Link to comment Share on other sites More sharing options...
VanBuren Posted January 30, 2005 CID Share Posted January 30, 2005 where do you guys get that web100 tool from? I forgot the address. http://nitro.ucsc.edu/ Quote Link to comment Share on other sites More sharing options...
Indestructable Posted January 30, 2005 CID Share Posted January 30, 2005 thanks Van!!! Quote Link to comment Share on other sites More sharing options...
ates Posted January 30, 2005 Author CID Share Posted January 30, 2005 OK Van Buren I found that setting the RWIN to 29200 resulted in: WEB100 Enabled Statistics: Checking for Middleboxes . . . . . . . . . . . . . . . . . . Done running 10s outbound test (client to server) . . . . . 373.55Kb/s running 10s inbound test (server to client) . . . . . . 4.03Mb/s ------ Client System Details ------ OS data: Name = Windows XP, Architecture = x86, Version = 5.1 Java data: Vendor = Sun Microsystems Inc., Version = 1.4.2_04 ------ Web100 Detailed Analysis ------ Cable modem/DSL/T1 link found. Link set to Half Duplex mode No network congestion discovered. Good network cable(s) found Normal duplex operation found. Web100 reports the Round trip time = 53.58 msec; the Packet size = 1460 Bytes; and There were 2 packets retransmitted, 37 duplicate acks received, and 38 SACK blocks received The connection was idle 0 seconds (0%) of the time This connection is receiver limited 70.62% of the time. Increasing the current receive buffer (28.0 KB) will improve performance This connection is network limited 29.32% 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: OFF 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 But my download speeds suffer bigtime with the lower rwin. Shouldn't it be quicker with less re-transmitted packets? Is having low re-transmission a trade off for higher d/l speeds? :::.. Download Stats ..::: Connection is:: 2791 Kbps about 2.8 Mbps (tested with 2992 KB) Download Speed is:: 341 KB/s Tested From:: http://www.testmy.net/ Test Time:: Sun Jan 30 2005 13:36:58 GMT-0800 (Pacific Standard Time) Bottom Line:: 50X faster than 56K 1MB download in 3 sec Validation Link:: https://testmy.net/id-NTY53EZHU thanks! Quote Link to comment Share on other sites More sharing options...
VanBuren Posted January 30, 2005 CID Share Posted January 30, 2005 very nice its a matter of balance, if you use too low RWIN your speed will drop and if your using too big the re transmissions increase however the re transmissions its not a big problem aslong as you get the speed happy surfing and keep visiting VanBuren Quote Link to comment Share on other sites More sharing options...
ates Posted January 30, 2005 Author CID Share Posted January 30, 2005 allright cool I'd rather keep the rwin big and have more re-transmissions Thanks for the help!!! Quote Link to comment Share on other sites More sharing options...
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