BBA Posted February 17, 2006 CID Share Posted February 17, 2006 I am currently running Windows XP with SP2, my ISP is RoadRunner, cable provider is BrightHouse in Central Florida, advertised speed is 5Mbps download (though I read recently that the speeds were going up to 7Mbps, but I Quote Link to comment Share on other sites More sharing options...
trogers Posted February 17, 2006 CID Share Posted February 17, 2006 "Your PC/Workstation has a 124.0 KByte buffer which limits the throughput to 7.06 Mbps. The network based flow control limits the throughput to 0.48 Mbps There were 17 packets retransmitted, 23 duplicate acks received, and 28 SACK blocks received The connection stalled 2 times due to packet loss The connection was idle 0.72 seconds (7.19%) of the time This connection is network limited 99.97% of the time. Excessive packet loss is impacting your performance, check the auto-negotiate function on your local PC and network switch" Your RWIN setting is appropriate for 5-7 Mbps bandwidth. Seems like the problem lies in signal transmission. Could be due to a bad line or faulty cable or electrical interference on signal cables, modem, router. Or if hardware drivers have been recently updated, problem may lie with faulty Nic, router or modem. Quote Link to comment Share on other sites More sharing options...
BBA Posted February 17, 2006 Author CID Share Posted February 17, 2006 Seems like the problem lies in signal transmission. Could be due to a bad line or faulty cable or electrical interference on signal cables, modem, router. Or if hardware drivers have been recently updated, problem may lie with faulty Nic, router or modem. Hardware drivers haven't been updated lately; haven't found new drivers for them. Any advice on a NIC, since I plan to buy a new one anyway, just in case it has anything to do with my speed issues. My current NIC, bought at Wal-Mart, wasn't even recognized by WinXP when I first installed it, which I thought was odd, but it worked after I formatted and reinstalled XP. As I mentioned, I had my router disconnected during my tests, so the router isn't the issue, although it was causing it to be noticibly slower, which is why it's disconnected. I have a D-Link DGL-4300 on order to replace my current Netgear router. My modem is a Toshiba, supplied by the cable provider. If replacing things I own doesn't work, I'll have them replace my modem. I'd just buy my own, but I already have one that's pretty much worthless as it doesn't work on the network here. I can try to change the cable from the wall to the modem to see if that changes anything since I have a lot of extra coaxial cables around. I can also change out the cat-5 cables to see if that helps. If it's something else, something I can't really change myself, should the cable company be able to do anything it? If I call my provider and have them run their diagnostics, is there any chance they'll actually admit to the problem being somewhere other than in my equipment? Thanks for the reply. I guess there aren't any changes I can make in any of the programming/software to make a difference? Quote Link to comment Share on other sites More sharing options...
trogers Posted February 17, 2006 CID Share Posted February 17, 2006 The TCP Analyzer shows your window registry has already been tweaked to optimum settings. Only thing on the software side is to make sure you do not have spywares or similar that may leech off part of the bandwidth. For great suggestions on hardware and cabling, our members in this forum section will be able to help: http://www.testmy.net/forum/b-7 Quote Link to comment Share on other sites More sharing options...
BBA Posted February 17, 2006 Author CID Share Posted February 17, 2006 I went into safe mode and did a virus and spyware scan. Then I restarted and enabled system restore since I shut it down before the scans. All that was before my tests were done. My scanning software includes Symantec Anti-Virus and Spy Sweeper, both of which were free from work, but i have no idea how worthy they are. I used to run adaware and spybot, and had something... bazooka something or another and I tried hijackthis. I just thought it was overkill having all of that on my computer, and I never really understood hijackthis. I'm not the most computer savvy person, so I'm open to suggestions on software. As far as I know, however, I am virus and spyware free. Thanks for the help so far. Maybe I'll eventually have speeds worth the money I'm paying the cable company. Quote Link to comment Share on other sites More sharing options...
trogers Posted February 17, 2006 CID Share Posted February 17, 2006 This is a good site to scan and clean spyware: http://www.ewido.net/en/onlinescan And here is a good source of security freewares: http://www.techsupportalert.com/best_46_free_utilities.htm Quote Link to comment Share on other sites More sharing options...
FallowEarth Posted February 18, 2006 CID Share Posted February 18, 2006 Can you provide a traceroute? From the command prompt: tracert testmy.net Make sure that you don't have a firewall or any browser extensions running when you are performing a download speed test. You can also try clicking where it says to load without progress bar. Quote Link to comment Share on other sites More sharing options...
BBA Posted February 18, 2006 Author CID Share Posted February 18, 2006 Just for a little comparison, I disconected my PC and connected my laptop to the modem via cat-5 cable. Here's my results with the laptop (also running WinXP SP2). :::.. Download Stats ..::: Connection is:: 201 Kbps about 0.2 Mbps (tested with 386 kB) Download Speed is:: 25 kB/s Tested From:: https://testmy.net (server1) Test Time:: Fri Feb 17 21:50:56 EST 2006 Bottom Line:: 4X faster than 56K 1MB download in 40.96 sec Diagnosis: May need help : running at only 4.69 % of your hosts average (rr.com) Validation Link:: https://testmy.net/stats/id-HT6R5FAQL TCP options string = 020405b40103030401010402 MTU = 1500MTU is fully optimized for broadband. MSS = 1460Maximum useful data in each packet = 1460, which equals MSS. Default TCP Receive Window (RWIN) = 640000 RWIN Scaling (RFC1323) = 4 bits (scale factor of 8)Unscaled TCP Receive Window = 40000 For optimum performance, consider changing RWIN to a multiple of MSS.Other RWIN values that might work well with your current MTU/MSS: 513920 (MSS x 44 * scale factor of 8)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: 25600 kbps (3200 KBytes/s) @ 200msYour TCP Window limits you to: 10240 kbps (1280 KBytes/s) @ 500ms MTU Discovery (RFC1191) = ON Time to live left = 54 hopsTTL value is ok. Timestamps (RFC1323) = OFF Selective Acknowledgements (RFC2018) = ON IP type of service field (RFC1349) = 00000000 (0) WEB100 Enabled Statistics: Checking for Middleboxes . . . . . . . . . . . . . . . . . . Done running 10s outbound test (client to server) . . . . . 407.77Kb/s running 10s inbound test (server to client) . . . . . . 261.16kb/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 Information: throughput is limited by other network traffic. Good network cable(s) found Normal duplex operation found. Web100 reports the Round trip time = 135.31 msec; the Packet size = 1460 Bytes; and There were 23 packets retransmitted, 36 duplicate acks received, and 47 SACK blocks received The connection stalled 2 times due to packet loss The connection was idle 0.74 seconds (7.39%) of the time This connection is network limited 99.97% of the time. Excessive packet loss is impacting your performance, check the auto-negotiate function on your local PC and network switch 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 Client IP addresses are preserved End-to-End WEB100 Kernel Variables: Client: localhost/127.0.0.1 AckPktsIn: 151 AckPktsOut: 0 BytesRetrans: 33580 CongAvoid: 71 CongestionOverCount: 0 CongestionSignals: 10 CountRTT: 98 CurCwnd: 5840 CurMSS: 1460 CurRTO: 370 CurRwinRcvd: 640000 CurRwinSent: 16304 CurSsthresh: 2920 DSACKDups: 0 DataBytesIn: 0 DataBytesOut: 392740 DataPktsIn: 0 DataPktsOut: 269 DupAcksIn: 36 ECNEnabled: 0 FastRetran: 8 MaxCwnd: 18980 MaxMSS: 1460 MaxRTO: 470 MaxRTT: 260 MaxRwinRcvd: 640000 MaxRwinSent: 16304 MaxSsthresh: 8760 MinMSS: 1460 MinRTO: 300 MinRTT: 90 MinRwinRcvd: 40000 MinRwinSent: 16304 NagleEnabled: 1 OtherReductions: 0 PktsIn: 151 PktsOut: 269 PktsRetrans: 23 X_Rcvbuf: 103424 RcvWinScale: 7 SACKEnabled: 3 SACKsRcvd: 47 SendStall: 0 SlowStart: 28 SampleRTT: 100 SmoothedRTT: 140 X_Sndbuf: 103424 SndWinScale: 4 SndLimTimeRwin: 0 SndLimTimeCwnd: 10295394 SndLimTimeSender: 2583 SndLimTransRwin: 0 SndLimTransCwnd: 1 SndLimTransSender: 1 SndLimBytesRwin: 0 SndLimBytesCwnd: 392740 SndLimBytesSender: 0 SubsequentTimeouts: 0 SumRTT: 13260 Timeouts: 2 TimestampsEnabled: 0 WinScaleRcvd: 4 WinScaleSent: 7 DupAcksOut: 0 StartTimeUsec: 56292 Duration: 10299235 c2sData: 2 c2sAck: 2 s2cData: 9 s2cAck: 2 half_duplex: 0 link: 100 congestion: 1 bad_cable: 0 mismatch: 0 spd: 0.00 bw: 0.43 loss: 0.037174721 avgrtt: 135.31 waitsec: 0.74 timesec: 10.00 order: 0.2384 rwintime: 0.0000 sendtime: 0.0003 cwndtime: 0.9997 rwin: 4.8828 swin: 64.0000 cwin: 0.1448 rttsec: 0.135306 Sndbuf: 8388608 aspd: 1.00036 Checking for mismatch on uplink (speed > 50 [0>50], (xmitspeed < 5) [0.40<5] (rwintime > .9) [0>.9], (loss < .01) [0.03<.01] Checking for excessive errors condition (loss/sec > .15) [0.00>.15], (cwndtime > .6) [0.99>.6], (loss < .01) [0.03<.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) [0.40<9.5] (loss < .01) [0.03<.01], (mylink > 0) [3.0>0] Checking for Wireless link (sendtime = 0) [3.0E=0], (speed < 5) [0<5] (Estimate > 50 [0.43>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) [8760>0] estimate = 0.43 based on packet size = 11Kbits, RTT = 135.31msec, and loss = 0.037174721 The theoretical network limit is 0.43 Mbps The NDT server has a 8192.0 KByte buffer which limits the throughput to 473.00 Mbps Your PC/Workstation has a 625.0 KByte buffer which limits the throughput to 36.08 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' Quote Link to comment Share on other sites More sharing options...
BBA Posted February 18, 2006 Author CID Share Posted February 18, 2006 Can you provide a traceroute? From the command prompt: tracert testmy.net when I try that the window comes up and shows the progress as it hops, but once it gets to about the 17th line the window disappears. Quote Link to comment Share on other sites More sharing options...
trogers Posted February 18, 2006 CID Share Posted February 18, 2006 Results of nitro test on your laptop: "There were 23 packets retransmitted, 36 duplicate acks received, and 47 SACK blocks received The connection stalled 2 times due to packet loss The connection was idle 0.74 seconds (7.39%) of the time This connection is network limited 99.97% of the time. Excessive packet loss is impacting your performance, check the auto-negotiate function on your local PC and network switch The NDT server has a 8192.0 KByte buffer which limits the throughput to 473.00 Mbps Your PC/Workstation has a 625.0 KByte buffer which limits the throughput to 36.08 Mbps The network based flow control limits the throughput to 1.07 Mbps" Your RWIN is set way too high. Try this ccs file with cablenut and see if you get an improvement: Quote Link to comment Share on other sites More sharing options...
BBA Posted February 19, 2006 Author CID Share Posted February 19, 2006 back on my PC and BrightHouse just sent someone out to replace my modem. Here's where I'm at now... :::.. Download Stats ..::: Connection is:: 6211 Kbps about 6.2 Mbps (tested with 5983 kB) Download Speed is:: 758 kB/s Tested From:: https://testmy.net (server1) Test Time:: Sun Feb 19 14:49:11 EST 2006 Bottom Line:: 111X faster than 56K 1MB download in 1.35 sec Diagnosis: Awesome! 20% + : 44.98 % faster than the average for host (rr.com) Validation Link:: https://testmy.net/stats/id-MVS90EJBD Looks a lot better than it did before. What a difference a properly functioning modem can make. Thanks for all the help. Quote Link to comment Share on other sites More sharing options...
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