How to maximize transfer speeds over lan


Recommended Posts

Hi,

I have a PC with Intel Gig Lan and the latest drivers. That is connected to a Cisco E2000 Gig router. I have another PC also with Intel Gig Lan and is also connected to the router. Both use high speed Gig rated Ethernet Cables, only about 15' long. Both adapters, on board, are set to force 1 Gig full duplex mode.

When transferring files from one to another, even using a fast copy program such as 'Fast Copy' I see only a max of 0.2 mbps.

What are some factors to consider in this scenario to enhance the speed of this connection. I can give any additional specs where needed.

Thanks!

Also the files how big are they ? A single 10gig file or thousands of small files the latter will clog even a teamed gig connection. And have you checked to ensure you are actually connected in gigabit mode using led's or connection properties.

Try this.

use iperf to test your speed

If iperf comes up with something better than what you are seeing try a different copy method. I personally use robocopy with win 7 and 2008 r2...if you want a gui use richcopy, this is a bit buggy though but it supports a multithreaded copy which will maximize bandwidth (this works best with small files).

http://linhost.info/...erf-on-windows/

^ this!!! what does your iperf test show? BTW you should not hard code gig speeds. If it does not come up gig in auto, then something is wrong that needs to be checked before trying to hard code it to gig.

My gig tests using iperf are mid 700 mbps to low 900s

I would think you got a problem with the connection if you hard coded.

0.2 Mbps? that's sickeningly slow.

At the risk of sounding dumb, did you mean 0.2 Gbps?

NO, I checked again and 'Fast Copy' shows a max transfer rate of 0.2mbs.

What are your source and destination drives? Is either of them external USB drive?

If not, its probably faulty cable..

2nd 7200 Sata drive on sending system and same on receiving. Cables were tested several weeks ago at an old employer of mine with a Fluke Ethernet Cable Tester.

Also the files how big are they ? A single 10gig file or thousands of small files the latter will clog even a teamed gig connection. And have you checked to ensure you are actually connected in gigabit mode using led's or connection properties.

Single files at a time. Tried sizes from 100mb to 4gb. All indications, on PC and Router, show I am connected at Gigabit mode.

^ this!!! what does your iperf test show? BTW you should not hard code gig speeds. If it does not come up gig in auto, then something is wrong that needs to be checked before trying to hard code it to gig.

My gig tests using iperf are mid 700 mbps to low 900s

I would think you got a problem with the connection if you hard coded.

Ok, I will try iPerf and reset to auto negotiate. I will reply with my findings.

Hello,

Does it make a difference if you let the NICs negotiate their own speed and duplex?

Have you tried temporarily disabling any security software like an anti-virus program or a firewall in case that is introducing a slowdown?

Regards,

Aryeh Goretsky

This topic is now closed to further replies.
  • Recently Browsing   0 members

    • No registered users viewing this page.
  • Posts

    • I'm not unblocking my camera for this crapola. Sorry, Google.
    • Ummmm that is what is it supposed to do. Just turn if off in settings if you do not want it analyzing your open tabs. Chrome does the same thing with Gemini. Sarfari will do the samething after Apple's AI and even more so with the release of their 27 versions that is now powered by Googles LLM/ML models. Understanding why it is doing it and how it can help you vs jumping to some conspiracy theroy is a much better approach. As long as it can be turned off, all is good. Yes the default should be off but the a lot of people would never discover these features.
    • Just another reason (aside from many others) not to use Edge. Firefox 153.0b5 DEx64 has a similar feature added recently in prior builds that I will turn off at some point when I get around to it. It's the new "Something looks suspicious" page that pops up here and there. It cleverly hides itself between web pages that I've actually visited; as a result, you know, of selecting a web page and telling the browser where to go. The interesting thing is that it does not produce these warnings from pages that I, as the only intelligent user of the browser in my system, have ever directed the browser to open! What seems to be happening is that the browser looks at all the goofy ad links on a web page I do actually open and selects one that "looks suspicious" and then creates the "something looks suspicious" web page, which is neatly inserted, as mentioned, between web pages my RB ("real brain") has directed the browser to load in a session. The thing is, I usually look at links I am considering to follow before I ask the browser to load them, and in cases I have noticed where the link does indeed look suspicious, most of the time I will choose to not follow the link at all. Doesn't everyone do this or something similar? I am picky about what I voluntarily load... (I don't like links that start off fine, with a site designaiton that seems normal enough but then is followed by indecipherable alphanumeric strings many, many lines long, etc. I tend to reject those because they look suspicious. They may not be, but I don't care... I'll stay with Firefox, of course, if for no other reason than they usually let you turn off the junk you don't like. And because it isn't Edge... But at some point Microsoft will come to realize that putting your bookmarks on the left side is a Good Thing for a lot of people, just as Microsoft discovered when it had the bright idea of nailing the Windows taskbar to the bottom of the screen, when for decades Microsoft browsers had left that placement up to the user. They have finally reversed the obscenity of that decision. Finally.
    • Google was using the old CATPCHAs data to train their LLMs. What is the say they won't use this camera data of users to train their LLM? these companies need some strict regulations!
  • Recent Achievements

    • One Year In
      BA the Curmudgeon earned a badge
      One Year In
    • Conversation Starter
      rosiecharles earned a badge
      Conversation Starter
    • First Post
      KMilenkoski1202 earned a badge
      First Post
    • First Post
      carols23 earned a badge
      First Post
    • One Month Later
      Tom Willson earned a badge
      One Month Later
  • Popular Contributors

    1. 1
      +primortal
      513
    2. 2
      +Edouard
      259
    3. 3
      PsYcHoKiLLa
      151
    4. 4
      Steven P.
      94
    5. 5
      macoman
      66
  • Tell a friend

    Love Neowin? Tell a friend!