linux - Computer is slower on faster network

07
2014-07
  • Ijustwant2learn

    I have a great and fast laptop, while using my University's wireless Internet connection.

    Once I come home and plug in the LAN connection (which has much better download / upload speeds than the university's), my whole computer becomes slower.

    Opening a tab takes much more time, loading a website etc. I used traceroute and it shows great ping times (better than university's). I am just going crazy, I think I have tried everything (changed DNS servers, still the same). What can I do?

    I use Linux by the way. My router at home is Buffalo. Also, some time ago, everything was fine, I don't remember the time it started. I tried restarting router, still the same. In addition, it is slow I guess because CPU shows 100% a lot (when opening a tab for example).

  • Answers
  • mdpc

    I believe you are mistaking response time with bandwidth. Having quick response time does NOT necessarily translate into higher speed if you do not have the bandwidth to do anything. I'll bet your ISP at home is throttling your total available bandwidth and thus you are getting the results you are seeing.

  • Ecnerwal

    Seems likely that your university network is blocking access to some botnet or virus that's on your computer, and your home network isn't...so you connect at home and (whatever it is) beats your network and computer to death.

  • rjt

    When you "plug in" into the LAN at home that sounds like an ethernet cable. Does the link light on your Buffalo indicate the speed and duplex of your connection 10? 100? 1000? Mbps? Use miitool or ethtool to see the connection status ... maybe your wired at home connection is only connecting at half-duplex.

    Is your laptop at home also slow when using wireless relatively close to your Buffalo?

    The router webpage should say how busy it is handling gateway duties. Further, may be a roommate throttled down your laptop at home?

    Is there an "always on" VPN in order to connect at school? ip route should look altogether different at school than at home.


  • Related Question

    networking - Internet very slow on one computer, but not another
  • Jimmy

    We just had internet installed the other day. I can connect just fine via wireless with my laptop, and I have no issues with speed. Some pages will say the server isn't responding. If it does manage to get some of the page, most images will be missing, or the style sheet won't download and she gets a page of unstyled text.

    I don't think it is a matter of signal strength. She has the issue both when sitting a foot from the router and when on the opposite side of the house. In both locations, the signal shows full strength, and mine works no matter where I am in the house (including right next to hers).

    I've tried restarting the router and her computer with no luck.

    Any ideas as to what may be the cause of this and what I can do to fix it?

    Additionally: I just tried plugging it straight into the router/modem. It still loads the same page quite a bit slower on her computer plugged in than mine does over wireless.


  • Related Answers
  • Django Reinhardt

    Great! Good job on plugging her computer directly into the router. As it's still slow then we can rule out wireless issues. The problem is with her computer itself. You don't say which operating system you're both using, so I'm going to assume Windows.

    Unfortunately, more than likely it is a bunch of Malware causing problems on her machine.

    Download some anti-malware software (like AdAware Free), install it on her machine, and run a scan. If you have problems installing or running a scan, her machine might be quite badly infected.

    If that's the case, try running a free online virus scan, like Trend Micro's.

    If you can't even load that site on her machine, then it's probably a really bad case, unfortunately. (Many Malware and viruses are programmed to recognize attempts to remove them or access anti-malware software.)

    If this is what happens, then post back here and I'll try to give you some more help.

    If everything comes back clean, then great. I was wrong and it's more than likely just a lot of legitimate programs taking bandwidth. To reduce the number of programs running, press Start/Windows Menu and click on Run. Type msconfig and load that program.

    In MSConfig, click on the Startup tab and unclick everything (these are a list of programs that get automatically loaded when Windows starts -- they can be started manually at any time, and so probably don't need to be loaded).

    Reboot the machine and see if any of the above has helped.

    If not, post back and I'll try to help you further.

  • ChrisF

    We had the same problem.

    After investigating I found out that the slower computer was on airplane mode (win 8).

    Once I turned it off it started to work just fine.

  • HostMyCalls Hosted PBX Service

    Here are some things you might try to speed up the slow computer:

    Go to start>Run Type Prefetch then hit enter. A window will open, then press ctrl+A. Everything in the prefetch window should turn blue highlighted. Now Press Ctrl+D. You might get a confirmation window asking if you are sure you want to delete these xxxx items. Click yes, then after they’re all gone, close that window.

    Right click the recycle bin. Select properties and then move the slider bar all the way to the left so that there is no disk space taken by it. Click Apply and then Ok.

    Now go to Start>All Programs>Accesories>System Tools>Disk Cleanup. Chose the C: drive, then click yes to any warnings/Confirmations. Check all boxes when the disk cleanup window opens.

    Go to The Start>Run>Msconfig>startup. Uncheck anything that’s not a firewall, anti-virus/spyware, sound drive, anything you need to run your computer properly, etc. Then click apply and close. It will ask to restart the computer. Go ahead and restart it.

    When it starts booting, press F8 immediately until you get a screen that has a list of options. Select safe mode. Go to Start>All Programs>Accesories>System Tools>Disk Defragment. Then Select the C: Drive to defrag. This will take a while depending upon the size of the hard drive. Do not use the computer while it is running defrag. After it completes, restart the system like you would normally. After everything loads a window will pop up saying you have used the system config tool, check the box and click ok.

    You can also check out your Internet using this link: http://www.hostmycalls.com/2010/11/23/hostmycalls-hosted-pbx-internet-cable-modem-help-guide/

  • Joe Taylor

    She isn't downloading Torrents or anything is she? I'm sure if she was you;d have spotted it by now but when I am my browsing goes down the drain. Dodgy Virgin Router is to blame.

  • Jimmy

    Well after a very frustrating couple of days and no help whatsoever from customer service, I decided to try a different router/modem. I'm fairly certain she doesn't have any malware.

    Luckily and inexplicably, a different router works just fine. It also helped speed up loading on my computer as well. I don't know if just the individual router was to blame, or the brand (Motorola).

    Now everything is cruising along at blazing speeds with nary a hiccup. Thanks for all the suggestions, though!

  • RegsaGC

    Without being an expert I blame the driver on her wireless dongle. It is the manufacturers' problem to create reliable and stable drivers that can connect to all routers and that is not always achieved. There isn't much to do about it, except buy one that connects through usb.

  • user220632

    looks like I'm a tad late but I think I got the answer: enter to your modem preferences (or router, I don't know the difference, sorry) and deactivate the IP overflooding option. Everything will be as smooth as grease over butter.

    Hope this helps!