trogers

Hi dn0, Seems like your connection setup has a problem too: Alarm: Duplex mismatch condition exists: Host set to Full and Switch set to Half duplex

You can do a line check by performing a traceroute to you IP address. Use the traceroute box of this link. Find out at which stage number the high latency happens. http://www.dnsstuff.com/

Make sure your modem and the signal cables are not near any sound speaker and not on top of your comp tower.

Your connection shows a high latency of over 500 ms. Usual latency to the US is less than 300 ms. The causes for the slow speed could either be bad telephone line or electromagnetic interference (EMI) that is affecting your cable connection. For further read on sources of EMI go to these links: https://www.speedguide.net/read_articles.php?id=1885 https://www.speedguide.net/read_articles.php?id=117

Here are links to explain about modem and router. http://computer.howstuffworks.com/modem.htm http://computer.howstuffworks.com/router.htm Basically they are the two box-like devices that connect your computer to the wall socket. If you have these two boxes, place them a few feet apart.

Make sure your modem and router are kept a few feet apart. Yes, please redo the tests.

Try this ccs file.

Hi, Welcome to this forum. Before we can assist you we need some info on your comp's present setup. Please carry out the test below and post your results. In the second link, you need to post the reports from both STATISTICS and MORE DETAILS sections: https://www.speedguide.net/analyzer.php http://nitro.ucsc.edu/

Hi 50.Caliberpimp, Perhaps you can post a new topic so we can address your request specifically?

Are you on broadband or dial up 56K? If broadband what is your subscribed speed?

This ccs file will help.

Explanation of full and half duplex: Refers to the ability to transfer data in both directions. Full-duplex allows for data transfer in both directions simultaneously; half-duplex allows for data transfer only in one direction at the same time. Most current NICs allow for full-duplex communication, theoretically doubling their throughput (i.e. for 100BaseT - 100 Mbps in one direction and 100 Mbps in the other at the same time). Curent Cable/DSL modems are usually half-duplex.

Have you adjusted your modem/router to auto-sense for duplex?

Could you do the TCP Analyzer test again: https://www.speedguide.net/analyzer.php I think your RWIN has not been adjusted to 128480 or 256960

When speed fluctuates within minutes (and latency too), the most likely cause is electrical noise (electromagnetic interference) affecting your signals. The following thread shows a similar case to yours and the cause of the problem unique: http://www.testmy.net/forum/index.php?topic=11588.0

Ah...my mistake. Your subscribed speed is 5.0 Mbps. Your RWIN value of 65535 is set too low so your PC throughput limit is just 3.04 Mbps. Try my ccs file that I have loaded at this thread: http://www.testmy.net/forum/index.php?topic=11588.0

I do not understand! Your subscribed speed is 1.5 Mbps and your speedtest gives you 1.6 Mbps. Why do you need to tweak?

Perhaps you can read through your hardware manuals or surf to the manufacturer's website, you can find an answer.

You do not need to cancel the Cablenut settings. In the TCP Optimizer, select Custom settings and just enter the following values: Custom settings - check Modify All Network Adapters - check network adapter selection - your NIC MTU - 1500 TTL - 64 TCP Receive Window - 128480 MTU Discovery - Yes Black Hole Detect - No Selective Acks - Yes Max Duplicate ACKs - 2 TCP 1323 Options: Windows Scaling - check Timestamps - uncheck Advanced Settings tab: Max Connections per Server - 10 Max Connections per 1.0 Server - 20 LocalPriority - 5 Host Priority - 6 DNSPriority - 7 NetbtPriority - 8 Lan Browsing speedup - optimized QoS: NonBestEffortLimit - 0 ToS: DisableUserTOSSetting - 0 ToS: DefaultTOSValue - 240 MaxNegativeCacheTtl - 0 NetFailureCacheTime - 0 NegativeSOACache Time - 0 LAN Request Buffer Size - 32768 Then select "Apply Changes" and reboot to take effect You can see most of the setting values are similar to Cablenut. There is one advantage over Cablenut - you can modify your network adaptors. But Cablenut has a better and more convenient presentation.

If you can increase your RWIN to 128480 your PC throughput limit will be 6+ Mbps and your download speed will be able to reach 5.3-5.6 Mbps.

The values are according with my ccs file 1500-128480-64240.ccs

Hi FallowEarth, I am not good with hardware. Perhaps you can work with adiace to see if that is the problem.

Still the same setting of RWIN 64240 and that is why "62.0 KByte buffer which limits the throughput to 3.68 Mbps" With RWIN at 128480, Window Scaling should be turned on In Cablenut Adjuster, the 4th item from top right Tcp13230pts - 1 If Cablenut cannot make adjustments that will retains in your registry, please go to this site and download the TCP Optimizer v203 and I will help you make adjustments with it: www.speedguide.net RFC 1323 Window Scaling: OFF Your PC/Workstation has a 62.0 KByte buffer which limits the throughput to 3.68 Mbps The network based flow control limits the throughput to 2.92 Mbps

Change the other values back to 64240. Just let RWIN remain at 128480. Reboot comp and do this test again: http://nitro.ucsc.edu/ And also the speedtest for both down and up using the LARGEST file 2992 kB

Click to open the Cablenut Adjuster and it will display the existing settings in your registry. In the first item on top left, it should read DefaultReceiveWindow - 128480 If not, change the value to 128480, save to registry exit the Cablenut Adjuster and then reopen Cablenut Adjuster to check if values have bben changed. If yes, reboot comp.