mbrainerd Posted February 22, 2005 CID Share Posted February 22, 2005 What does this mean in bold print? WEB100 Enabled Statistics: Checking for Middleboxes . . . . . . . . . . . . . . . . . . Done running 10s outbound test (client to server) . . . . . 851.87Kb/s running 10s inbound test (server to client) . . . . . . 2.11Mb/s ------ Client System Details ------ OS data: Name = Windows XP, Architecture = x86, Version = 5.1 Java data: Vendor = Sun Microsystems Inc., Version = 1.5.0_01 ------ 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 = 116.10 msec; the Packet size = 1460 Bytes; and No packet loss was observed. This connection is receiver limited 91.93% of the time. Increasing the current receive buffer (0 KB) will improve performance enclosed is cablenut settings to. This connection is network limited 7.53% 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: 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 [66.117.105.5] but Client says [172.25.25.2] WEB100 Kernel Variables: Client: localhost/127.0.0.1 AckPktsIn: 907 AckPktsOut: 0 BytesRetrans: 0 CongAvoid: 0 CongestionOverCount: 0 CongestionSignals: 0 CountRTT: 907 CurCwnd: 32120 CurMSS: 1460 CurRTO: 316 CurRwinRcvd: 0 CurRwinSent: 5840 CurSsthresh: 2147483647 DSACKDups: 0 DataBytesIn: 0 DataBytesOut: 2749124 DataPktsIn: 0 DataPktsOut: 1818 DupAcksIn: 0 ECNEnabled: 0 FastRetran: 0 MaxCwnd: 32120 MaxMSS: 1460 MaxRTO: 325 MaxRTT: 197 MaxRwinRcvd: 0 MaxRwinSent: 5840 MaxSsthresh: 0 MinMSS: 1460 MinRTO: 302 MinRTT: 99 MinRwinRcvd: 2147483647 MinRwinSent: 5840 NagleEnabled: 1 OtherReductions: 1 PktsIn: 907 PktsOut: 1818 PktsRetrans: 0 X_Rcvbuf: 87380 SACKEnabled: 3 SACKsRcvd: 3 SendStall: 0 SlowStart: 21 SampleRTT: 109 SmoothedRTT: 113 X_Sndbuf: 81840 SndLimTimeRwin: 9312185 SndLimTimeCwnd: 730464 SndLimTimeSender: 55851 SndLimTransRwin: 2 SndLimTransCwnd: 7 SndLimTransSender: 6 SndLimBytesRwin: 2651014 SndLimBytesCwnd: 75700 SndLimBytesSender: 22410 SubsequentTimeouts: 0 SumRTT: 103393 Timeouts: 0 TimestampsEnabled: 0 WinScaleRcvd: 2147483647 WinScaleSent: 2147483647 DupAcksOut: 0 StartTimeUsec: 867901 Duration: 10103278 c2sData: 2 c2sAck: 2 s2cData: 2 s2cAck: 3 Checking for mismatch condition (cwndtime > .3) [0.07>.3], (MaxSsthresh > 0) [0>0], (PktsRetrans/sec > 2) [0>2], (estimate > 2) [97.71>2] Checking for mismatch on uplink (speed > 50 [2.17>50], (xmitspeed < 5) [0.84<5] (rwintime > .9) [0.92>.9], (loss < .01) [1.0E<.01] Checking for excessive errors condition (loss/sec > .15) [1.0E>.15], (cwndtime > .6) [0.07>.6], (loss < .01) [1.0E<.01], (MaxSsthresh > 0) [0>0] Checking for 10 Mbps link (speed < 9.5) [2.17<9.5], (speed > 3.0) [2.17>3.0] (xmitspeed < 9.5) [0.84<9.5] (loss < .01) [1.0E<.01], (link > 0) [100>0] Checking for Wireless link (sendtime = 0) [0.00=0], (speed < 5) [2.17<5] (Estimate > 50 [97.71>50], (Rwintime > 90) [0.92>.90] (RwinTrans/CwndTrans = 1) [2/7=1], (link > 0) [100>0] Checking for DSL/Cable Modem link (speed < 2) [2.17<2], (SndLimTransSender = 0) [6=0] (SendTime = 0) [0.005530623359904937=0], (link > 0) [100>0] Checking for half-duplex condition (rwintime > .95) [0.92>.95], (RwinTrans/sec > 30) [0.20>30], (SenderTrans/sec > 30) [0.60>30], OR (link <= 10) [100<=10] Checking for congestion (cwndtime > .02) [0.07>.02], (mismatch = 0) [0=0] (MaxSsthresh > 0) [0>0] bw = 97.71 based on packet size = 11Kbits, RTT = 113.99msec, and loss = 1.0E-6 The theoretical network limit is 97.71 Mbps The transmit buffer (79.0 KByte) limits the application to 5.47 Mbps Your receive buffer (0 KByte) limits the application to 0 Mbps The network based flow control limits the application to 2.14 Mbps Client Data reports link is 'T1', Client Acks report link is 'T1' Server Data reports link is 'T1', Server Acks report link is 'Ethernet' Quote Link to comment Share on other sites More sharing options...
VanBuren Posted February 22, 2005 CID Share Posted February 22, 2005 hey mbrainerd i have no idea why it dosent report your current receive buffer as (0 KB) this is my results WEB100 Kernel Variables: Client: localhost/127.0.0.1 AckPktsIn: 3979 AckPktsOut: 0 BytesRetrans: 1460 CongAvoid: 3701 CongestionOverCount: 0 CongestionSignals: 1 CountRTT: 3975 CurCwnd: 378140 CurMSS: 1460 CurRTO: 514 CurRwinRcvd: 510696 CurRwinSent: 17920 CurSsthresh: 200020 DSACKDups: 0 DataBytesIn: 0 DataBytesOut: 11652260 DataPktsIn: 0 DataPktsOut: 7981 DupAcksIn: 3 ECNEnabled: 0 FastRetran: 1 MaxCwnd: 378140 MaxMSS: 1460 MaxRTO: 515 MaxRTT: 316 MaxRwinRcvd: 510696 MaxRwinSent: 17920 MaxSsthresh: 200020 MinMSS: 1460 MinRTO: 283 MinRTT: 83 MinRwinRcvd: 63837 MinRwinSent: 17920 NagleEnabled: 1 OtherReductions: 33 PktsIn: 3979 PktsOut: 7981 PktsRetrans: 1 X_Rcvbuf: 65536 RcvWinScale: 7 SACKEnabled: 3 SACKsRcvd: 84 SendStall: 0 SlowStart: 164 SampleRTT: 314 SmoothedRTT: 314 X_Sndbuf: 65536 SndWinScale: 3 SndLimTimeRwin: 0 SndLimTimeCwnd: 10006640 SndLimTimeSender: 8979 SndLimTransRwin: 0 SndLimTransCwnd: 1 SndLimTransSender: 1 SndLimBytesRwin: 0 SndLimBytesCwnd: 11655180 SndLimBytesSender: 0 SubsequentTimeouts: 0 SumRTT: 939082 Timeouts: 0 TimestampsEnabled: 0 WinScaleRcvd: 3 WinScaleSent: 7 DupAcksOut: 0 StartTimeUsec: 525273 Duration: 10016374 c2sData: 4 c2sAck: 3 s2cData: 3 s2cAck: 3 half_duplex: 1 link: 0 congestion: 1 bad_cable: 0 mismatch: 0 spd: -1.99 bw: 4.21 loss: 0.000125298 avgrtt: 236.25 waitsec: 0.00 timesec: 10.00 order: 0.0008 rwintime: 0.0000 sendtime: 0.0009 cwndtime: 0.9991 rwin: 3.8963 swin: 64.0000 cwin: 2.8850 rttsec: 0.236247 Sndbuf: 8388608 Checking for mismatch condition (cwndtime > .3) [0.99>.3], (MaxSsthresh > 0) [200020>0], (PktsRetrans/sec > 2) [0.1>2], (estimate > 2) [4.21>2] Checking for mismatch on uplink (speed > 50 [-1.99>50], (xmitspeed < 5) [9.38<5] (rwintime > .9) [0>.9], (loss < .01) [1.25<.01] Checking for excessive errors condition (loss/sec > .15) [1.25>.15], (cwndtime > .6) [0.99>.6], (loss < .01) [1.25<.01], (MaxSsthresh > 0) [200020>0] Checking for 10 Mbps link (speed < 9.5) [-1.99<9.5], (speed > 3.0) [-1.99>3.0] (xmitspeed < 9.5) [9.38<9.5] (loss < .01) [1.25<.01], (mylink > 0) [45.0>0] Checking for Wireless link (sendtime = 0) [9.0E=0], (speed < 5) [-1.99<5] (Estimate > 50 [4.21>50], (Rwintime > 90) [0>.90] (RwinTrans/CwndTrans = 1) [0/1=1], (mylink > 0) [45.0>0] Checking for DSL/Cable Modem link (speed < 2) [-1.99<2], (SndLimTransSender = 0) [1=0] (SendTime = 0) [9.0E-4=0], (mylink > 0) [45.0>0] Checking for half-duplex condition (rwintime > .95) [0>.95], (RwinTrans/sec > 30) [0>30], (SenderTrans/sec > 30) [0.1>30], OR (mylink <= 10) [45.0<=10] Checking for congestion (cwndtime > .02) [0.99>.02], (mismatch = 0) [0=0] (MaxSsthresh > 0) [200020>0] estimate = 4.21 based on packet size = 11Kbits, RTT = 236.25msec, and loss = 1.25298E-4 The theoretical network limit is 4.21 Mbps The NDT server has a 8192.0 KByte buffer which limits the throughput to 270.90 Mbps Your PC/Workstation has a 498.0 KByte buffer which limits the throughput to 16.49 Mbps The network based flow control limits the throughput to 12.21 Mbps Client Data reports link is 'T3', Client Acks report link is 'Ethernet' Server Data reports link is 'Ethernet', Server Acks report link is 'Ethernet' ------ Web100 Detailed Analysis ------ 45 Mbps T3/DS3 link found. Link set to Half 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 = 236.25 msec; the Packet size = 1460 Bytes; and There were 1 packets retransmitted, 3 duplicate acks received, and 84 SACK blocks received The connection was idle 0 seconds (0%) of the time This connection is network limited 99.91% 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: ON Packet size is preserved End-to-End Server IP addresses are preserved End-to-End Client IP addresses are preserved End-to-End My receivebuffer is 510699 but test reportin it as 498000 My NIC and ISP Switch run in 10 Mbps full duplex and test reporting a 45 Mbps T3/DS3 link in Half Duplex mode it dosent seem accurate Click Report Problems and send them a email and ask btw the recievebuffer is DefaultRecivewindow and TcpWindowsize in Cablenut VanBuren Quote Link to comment Share on other sites More sharing options...
mbrainerd Posted February 22, 2005 Author CID Share Posted February 22, 2005 Thanks. My speeds our good on that site thought I might be able to squeeze a little more speed. I will email them and post with what they reply.. Thanks again.. Quote Link to comment Share on other sites More sharing options...
cholla Posted February 22, 2005 CID Share Posted February 22, 2005 Hi mbrainerd : Is this the result of the NDT test done when you do the first test each time you go to the site.I have found the first test can give some wrong results.Try to do it a second & third time & see if it stays the same.I have never received the results you put in bold type.Most of the time increasing the rwin will change the receive buffer stats this test reports.I am not saying to change your receive buffer use the setting that works best for you.Just if you increase it this test will change the amount of limitation it reports.Test your rwin with the TCP Analyzer.Use window scaling & try 513920 for rwin This should give you an unscaled receive window of 64240. See if this changes the test results of the NDT test if you like to experiment.you can always change back to your origional settings. https://www.speedguide.net/index.php This is the link for the TCP Analyzer. Post the results if you try this I would like to see them I think other members would too. Cholla Quote Link to comment Share on other sites More sharing options...
mbrainerd Posted February 22, 2005 Author CID Share Posted February 22, 2005 hey cholla, no I have been their several times. if i raise my rwin anymore i get a lot of packet loss. my speeds are consistent on most test sites, but are not so staedy here at testmy. to many people testing here now. Quote Link to comment Share on other sites More sharing options...
cholla Posted February 22, 2005 CID Share Posted February 22, 2005 Hi mbrainerd : I have win 98 se so it works different than XP.With 98 if you have windoe scaling off max rwin is 65535 no matter how high it is set.With scaling on it can be set higher using a multiple of 1460 the MSS.Like 513920 Then the unscaled receive window shows 64240.This is on win 98 se.I just saw you had window scaling off in the NDT test & thought that might be the reason for the results you got.Since the test showed your RWIN to be 0.your cablenut settings show it to be 30660.The test should show that but it doesn't. So for some reason it is not detecting your Rwin. would like to know why to. I have turned in a problem report to this test site on a test I did one time they were very good about responding.You might try that & see what they say. Cholla Quote Link to comment Share on other sites More sharing options...
mbrainerd Posted February 22, 2005 Author CID Share Posted February 22, 2005 I tried the problem report and the site froze up. Will run the test again and try it again will post up as soon as i get a reply.. Quote Link to comment Share on other sites More sharing options...
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