someperson

Thanks troger.. Regarding testing my speed within my country, unfortunately, I couldn't find a NDT server hosted in my country. Anyhow, I did some ping commands to local sites that showed latency about 140 - 300 ms in average. After doing some search, I guess the problem is logistic that we reached our maximum capacity for our international internet link in KSA and waiting for the start of a new one. Meanwhile, knowing this information, is it wise to tweak my TCP, and would it work? One last thing is that I don't know how to use the attached file above, even after I did some search on the internet about (ccs) files. Any help in explaining how to use it is much appreciated Thanks in advance

Hello, This is my first post and I'm happy joining this highly informative forum, and wish getting help for my problem. I have an ADSL connection of 256 kbps download speed and not sure about the upload speed, most probably 128 kbps. I used this connection for more than 6 months. It was OK untill about 2 weeks ago when I noticed download speeds getting slow from about 30 KB/s to about 15 KB/s. A technician visited my home & measured the signal. It was very good (1600+ kbps download, 512+ kbps upload), He told me he changed some jumpers anyway in the local public telephone switch. Now, when I download any file, the download starts smoothly in about 30 KB/s for a minute or half a minute, then stops for seconds, continue again in about 23 KB/s and rises gradually till it reachs about 25 KB/s and stays in so speed with scattered stoppages for few seconds throughout the download process. Can you help me diagnosing the cause of my problem as I don't know much about networks and don't understand the stuff below: LAST SPEED TESTS :::.. Download Stats ..::: Connection is:: 204 Kbps about 0.2 Mbps (tested with 1013 kB) Download Speed is:: 25 kB/s Tested From:: https://testmy.net (server1) Test Time:: Sun Jan 29 15:23:11 UTC+0300 2006 Bottom Line:: 4X faster than 56K 1MB download in 40.96 sec Diagnosis: Looks Great : 3.55 % faster than the average for host (193.78) Validation Link:: https://testmy.net/stats/id-C0J6QZ7VF :::.. Upload Stats ..::: Connection is:: 131 Kbps about 0.1 Mbps (tested with 1013 kB) Upload Speed is:: 16 kB/s Tested From:: https://testmy.net (server1) Test Time:: Sun Jan 29 15:25:39 UTC+0300 2006 Bottom Line:: 2X faster than 56K 1MB upload in 64 sec Diagnosis: Awesome! 20% + : 98.48 % faster than the average for host (193.78) Validation Link:: https://testmy.net/stats/id-W68HSCG0A http://nitro.ucsc.edu/ showed the following results TCP/Web100 Network Diagnostic Tool v5.3.3d click START to begin Checking for Middleboxes . . . . . . . . . . . . . . . . . . Done running 10s outbound test (client to server) . . . . . 81.62Kb/s running 10s inbound test (server to client) . . . . . . 90.04kb/s Your PC is connected to a Cable/DSL modem Information: Other network traffic is congesting the link Information: The receive buffer should be 223.04 Kbytes to maximize throughput WEB100 Enabled Statistics: Checking for Middleboxes . . . . . . . . . . . . . . . . . . Done running 10s outbound test (client to server) . . . . . 81.62Kb/s running 10s inbound test (server to client) . . . . . . 90.04kb/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 = 609.07 msec; the Packet size = 1452 Bytes; and There were 4 packets retransmitted, 16 duplicate acks received, and 15 SACK blocks received The connection was idle 0 seconds (0%) of the time This connection is network limited 99.98% 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: OFF Information: Network Middlebox is modifying MSS variable Server IP addresses are preserved End-to-End Information: Network Address Translation (NAT) box is modifying the Client's IP address Server says [213.184.178.104] but Client says [10.0.0.2] WEB100 Kernel Variables: Client: localhost/127.0.0.1 AckPktsIn: 63 AckPktsOut: 0 BytesRetrans: 5808 CongAvoid: 38 CongestionOverCount: 0 CongestionSignals: 2 CountRTT: 43 CurCwnd: 11616 CurMSS: 1452 CurRTO: 910 CurRwinRcvd: 17424 CurRwinSent: 16304 CurSsthresh: 2904 DSACKDups: 0 DataBytesIn: 0 DataBytesOut: 101640 DataPktsIn: 0 DataPktsOut: 70 DupAcksIn: 16 ECNEnabled: 0 FastRetran: 2 MaxCwnd: 11616 MaxMSS: 1452 MaxRTO: 1310 MaxRTT: 650 MaxRwinRcvd: 17424 MaxRwinSent: 16304 MaxSsthresh: 2904 MinMSS: 1452 MinRTO: 910 MinRTT: 400 MinRwinRcvd: 10164 MinRwinSent: 16304 NagleEnabled: 1 OtherReductions: 0 PktsIn: 63 PktsOut: 70 PktsRetrans: 4 X_Rcvbuf: 103424 RcvWinScale: 2147483647 SACKEnabled: 3 SACKsRcvd: 15 SendStall: 0 SlowStart: 5 SampleRTT: 650 SmoothedRTT: 620 X_Sndbuf: 103424 SndWinScale: 2147483647 SndLimTimeRwin: 0 SndLimTimeCwnd: 10886524 SndLimTimeSender: 2602 SndLimTransRwin: 0 SndLimTransCwnd: 1 SndLimTransSender: 1 SndLimBytesRwin: 0 SndLimBytesCwnd: 101640 SndLimBytesSender: 0 SubsequentTimeouts: 0 SumRTT: 26190 Timeouts: 0 TimestampsEnabled: 0 WinScaleRcvd: 2147483647 WinScaleSent: 2147483647 DupAcksOut: 0 StartTimeUsec: 466815 Duration: 10892053 c2sData: 2 c2sAck: 2 s2cData: 3 s2cAck: 3 half_duplex: 0 link: 100 congestion: 1 bad_cable: 0 mismatch: 0 spd: 0.00 bw: 0.11 loss: 0.028571429 avgrtt: 609.07 waitsec: 0.00 timesec: 10.00 order: 0.2540 rwintime: 0.0000 sendtime: 0.0002 cwndtime: 0.9998 rwin: 0.1329 swin: 0.7891 cwin: 0.0886 rttsec: 0.609070 Sndbuf: 103424 aspd: 1.49319 Checking for mismatch on uplink (speed > 50 [0>50], (xmitspeed < 5) [0.08<5] (rwintime > .9) [0>.9], (loss < .01) [0.02<.01] Checking for excessive errors condition (loss/sec > .15) [0.00>.15], (cwndtime > .6) [0.99>.6], (loss < .01) [0.02<.01], (MaxSsthresh > 0) [2904>0] Checking for 10 Mbps link (speed < 9.5) [0<9.5], (speed > 3.0) [0>3.0] (xmitspeed < 9.5) [0.08<9.5] (loss < .01) [0.02<.01], (mylink > 0) [3.0>0] Checking for Wireless link (sendtime = 0) [2.0E=0], (speed < 5) [0<5] (Estimate > 50 [0.11>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) [2.0E-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) [2904>0] estimate = 0.11 based on packet size = 11Kbits, RTT = 609.07msec, and loss = 0.028571429 The theoretical network limit is 0.11 Mbps The NDT server has a 101.0 KByte buffer which limits the throughput to 1.29 Mbps Your PC/Workstation has a 17.0 KByte buffer which limits the throughput to 0.21 Mbps The network based flow control limits the throughput to 0.14 Mbps Client Data reports link is 'T1', Client Acks report link is 'T1' Server Data reports link is 'Ethernet', Server Acks report link is 'Ethernet'