zucharn Posted September 30, 2005 CID Share Posted September 30, 2005 hey, I've been having problems where I will get Extremely low dl speeds during peak hours, sort of after 6 pm eastern time. I also get bad packet loss. My operating system is windows xp professional with sp2 my isp is optimum online, advertised speed is 10000 1000 i think tweaking hasn't worked that well for me, just caused problems so I think I am screwing up somewhere, these are my test results. I ran these tests at a non-peak time for me, they get much worse at peak hours. will post peak hour ones when I get a chance. thanks in advance for advice. http://ttester.broadbandreports.com/tweak/block:2b88149?service=cable&speed=9999&os=winXP&via=normal :::.. Download Stats ..::: Connection is:: 355 Kbps about 0.4 Mbps (tested with 386 kB) Download Speed is:: 43 kB/s Tested From:: https://testmy.net/ (server2) Test Time:: Fri Sep 30 2005 15:19:42 GMT-0400 (Eastern Daylight Time) Bottom Line:: 6X faster than 56K 1MB download in 23.81 sec Diagnosis: May need help : running at only 6.06 % of your hosts average (optonline.net) Validation Link:: https://testmy.net/stats/id-KRIU1NSC9 TCP/Web100 Network Diagnostic Tool v5.3.3d click START to begin Another client is currently being served, your test will begin within 45 seconds Checking for Middleboxes . . . . . . . . . . . . . . . . . . Done running 10s outbound test (client to server) . . . . . 767.33kB/s running 10s inbound test (server to client) . . . . . . 588.77kB/s Your PC is connected to a Cable/DSL modem Information: The receive buffer should be 49.42 Kbytes to maximize throughput click START to re-test WEB100 Enabled Statistics: Checking for Middleboxes . . . . . . . . . . . . . . . . . . Done running 10s outbound test (client to server) . . . . . 767.33kB/s running 10s inbound test (server to client) . . . . . . 588.77kB/s ------ Client System Details ------ OS data: Name = Windows XP, Architecture = x86, Version = 5.1 Java data: Vendor = Sun Microsystems Inc., Version = 1.5.0_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 = 134.95 msec; the Packet size = 1460 Bytes; and There were 7 packets retransmitted, 29 duplicate acks received, and 0 SACK blocks received The connection was idle 0 seconds (0%) of the time This connection is receiver limited 13.88% of the time. Increasing the the client's receive buffer (17.0 KB) will improve performance This connection is network limited 86.08% of the time. Web100 reports TCP negotiated the optional Performance Settings to: RFC 2018 Selective Acknowledgment: OFF 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 Server says [67.81.xx.xx] but Client says [192.168.x.xx] WEB100 Kernel Variables: Client: localhost/127.0.0.1 AckPktsIn: 250 AckPktsOut: 0 BytesRetrans: 10220 CongAvoid: 131 CongestionOverCount: 0 CongestionSignals: 5 CountRTT: 214 CurCwnd: 11680 CurMSS: 1460 CurRTO: 370 CurRwinRcvd: 17520 CurRwinSent: 16304 CurSsthresh: 8760 DSACKDups: 0 DataBytesIn: 0 DataBytesOut: 747520 DataPktsIn: 0 DataPktsOut: 512 DupAcksIn: 29 ECNEnabled: 0 FastRetran: 5 MaxCwnd: 18980 MaxMSS: 1460 MaxRTO: 510 MaxRTT: 330 MaxRwinRcvd: 17520 MaxRwinSent: 16304 MaxSsthresh: 8760 MinMSS: 1460 MinRTO: 320 MinRTT: 100 MinRwinRcvd: 17520 MinRwinSent: 16304 NagleEnabled: 1 OtherReductions: 1 PktsIn: 250 PktsOut: 512 PktsRetrans: 7 X_Rcvbuf: 103424 RcvWinScale: 2147483647 SACKEnabled: 0 SACKsRcvd: 0 SendStall: 0 SlowStart: 15 SampleRTT: 190 SmoothedRTT: 140 X_Sndbuf: 103424 SndWinScale: 2147483647 SndLimTimeRwin: 1441803 SndLimTimeCwnd: 8935682 SndLimTimeSender: 2814 SndLimTransRwin: 1 SndLimTransCwnd: 2 SndLimTransSender: 1 SndLimBytesRwin: 189800 SndLimBytesCwnd: 557720 SndLimBytesSender: 0 SubsequentTimeouts: 0 SumRTT: 28880 Timeouts: 0 TimestampsEnabled: 0 WinScaleRcvd: 2147483647 WinScaleSent: 2147483647 DupAcksOut: 0 StartTimeUsec: 645873 Duration: 10384431 c2sData: 2 c2sAck: 2 s2cData: 9 s2cAck: 2 half_duplex: 0 link: 100 congestion: 0 bad_cable: 0 mismatch: 0 spd: 0.00 bw: 0.84 loss: 0.009765625 avgrtt: 134.95 waitsec: 0.00 timesec: 10.00 order: 0.1160 rwintime: 0.1389 sendtime: 0.0003 cwndtime: 0.8608 rwin: 0.1337 swin: 0.7891 cwin: 0.1448 rttsec: 0.134953 Sndbuf: 103424 aspd: 0.80761 Checking for mismatch on uplink (speed > 50 [0>50], (xmitspeed < 5) [0.76<5] (rwintime > .9) [0.13>.9], (loss < .01) [0.00<.01] Checking for excessive errors condition (loss/sec > .15) [9.76>.15], (cwndtime > .6) [0.86>.6], (loss < .01) [0.00<.01], (MaxSsthresh > 0) [8760>0] Checking for 10 Mbps link (speed < 9.5) [0<9.5], (speed > 3.0) [0>3.0] (xmitspeed < 9.5) [0.76<9.5] (loss < .01) [0.00<.01], (mylink > 0) [3.0>0] Checking for Wireless link (sendtime = 0) [3.0E=0], (speed < 5) [0<5] (Estimate > 50 [0.84>50], (Rwintime > 90) [0.13>.90] (RwinTrans/CwndTrans = 1) [1/2=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) [0.13>.95], (RwinTrans/sec > 30) [0.1>30], (SenderTrans/sec > 30) [0.1>30], OR (mylink <= 10) [3.0<=10] Checking for congestion (cwndtime > .02) [0.86>.02], (mismatch = 0) [0=0] (MaxSsthresh > 0) [8760>0] estimate = 0.84 based on packet size = 11Kbits, RTT = 134.95msec, and loss = 0.009765625 The theoretical network limit is 0.84 Mbps The NDT server has a 101.0 KByte buffer which limits the throughput to 5.84 Mbps Your PC/Workstation has a 17.0 KByte buffer which limits the throughput to 0.99 Mbps The network based flow control limits the throughput to 1.07 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' forgot traceroute The current date is: Fri 09/30/2005 The current time is: 15:33:33.56 Microsoft Windows XP [Version 5.1.2600] Pinging testmy.net [67.18.179.85] with 32 bytes of data: Reply from 67.18.179.85: bytes=32 time=51ms TTL=50 Reply from 67.18.179.85: bytes=32 time=66ms TTL=50 Reply from 67.18.179.85: bytes=32 time=57ms TTL=50 Reply from 67.18.179.85: bytes=32 time=50ms TTL=50 Ping statistics for 67.18.179.85: Packets: Sent = 4, Received = 4, Lost = 0 (0% loss), Approximate round trip times in milli-seconds: Minimum = 50ms, Maximum = 66ms, Average = 56ms Ping Complete. Tracing route to testmy.net [67.18.179.85] over a maximum of 30 hops: 1 1 ms 1 ms 1 ms 192.168.x.x 2 20 ms 12 ms 14 ms 10.86.160.1 3 18 ms 13 ms 13 ms dstswr1-vlan2.rh.brfdnj.cv.net [67.83.242.161] 4 14 ms 12 ms 16 ms r3-ge10-2.mhe.prnynj.cv.net [67.83.242.129] 5 25 ms 12 ms 14 ms r2-srp13-0.wan.prnynj.cv.net [65.19.112.18] 6 16 ms 16 ms 17 ms r1-srp1-0.in.nycmny83.cv.net [65.19.96.53] 7 24 ms 21 ms 21 ms r1-pos1-0.in.asbnva16.cv.net [167.206.8.150] 8 * * * Request timed out. 9 22 ms 32 ms 26 ms so-4-0-0.mpr2.iad2.us.above.net [64.125.30.122] 10 33 ms 24 ms 18 ms so-4-0-0.mpr1.iad1.us.above.net [64.125.28.213] 11 61 ms 22 ms 28 ms so-0-0-0.mpr2.iad1.us.above.net [64.125.29.110] 12 23 ms 21 ms 23 ms so-1-0-0.cr2.dca2.us.above.net [64.125.28.129] 13 82 ms 49 ms 50 ms so-2-2-0.cr2.dfw2.us.above.net [64.125.29.9] 14 55 ms 50 ms 51 ms 216.200.6.237.theplanet.com [216.200.6.237] 15 62 ms 67 ms 69 ms vl31.dsr01.dllstx3.theplanet.com [70.85.127.29] 16 89 ms 64 ms 55 ms dist-vlan41.dsr2-1.dllstx4.theplanet.com [70.85.127.83] 17 53 ms 55 ms 60 ms gig1-0-1.tp-car9-1.dllstx4.theplanet.com [67.18.116.69] 18 54 ms 50 ms 65 ms 85.67-18-179.reverse.theplanet.com [67.18.179.85] Trace complete. 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