Slow broadband in Ubuntu Hardy? - Speed up your internet connection
BY webmaster
11 years ago
15 comments comment
If you have noticed a drastic slowdown in your DSL internet connection after you upgraded to Ubuntu Hardy Heron (Ubuntu 8.04) then it might not be that your ISP is entirely to blame. It could be settings on your PC that is slowing things down. We had a problem in our office where Ubuntu PCs were getting only around 80Kbps as opposed to 2Mbps from Windows machines. After troubleshooting and playing with some configuration parameters we got the Ubuntu Machines up to the same level as the Windows PCs

The solution is simple. All you have to do is to open /etc/sysctl.conf and add the following to the end of the file. You might have to tweak the value 32768 (all occurrences in the following) to any power of 2 that works perfectly fine for you. We had seen several places where these values were different. 32768 was the value for which we had the best results on the BSNL bandwidth test. We use this test because we have a BSNL broadband connection. Once the file is saved you can reload these kernel parameters by running sudo sysctl -p or by simply restarting the system.
# Tweaks for faster broadband...
net.core.rmem_default = 32768
net.core.rmem_max = 32768
net.core.wmem_default = 32768
net.core.wmem_max = 32768
net.ipv4.tcp_wmem = 4096 32768 32768
net.ipv4.tcp_rmem = 4096 32768 32768
net.ipv4.tcp_mem = 32768 32768 32768
net.ipv4.tcp_rfc1337 = 1
net.ipv4.ip_no_pmtu_disc = 0
net.ipv4.tcp_sack = 1
net.ipv4.tcp_fack = 1
net.ipv4.tcp_window_scaling = 1
net.ipv4.tcp_timestamps = 1
net.ipv4.tcp_ecn = 0
net.ipv4.route.flush = 1
Although this fix was tried out in Ubuntu it is possible that this might work for other distros with comparable kernels. It looks like the DSL routers and connections are optimized for the default values used in windows. So we just tweak the values used in GNU/Linux to match the router - simple :-)



on 30th March 2007 / by webmaster
Ever since we started our pc sales and services division we have been trying to get a system with Hardware Linux Leave a reply Your email address will not be published. Required fields are marked * Cherry (not verified) access_time 09 Dec 2019 - 13:59 Is that true ? Are there many people who still use modems to dialup internet ? I was thinking of helping out with some limited internal modem support for NetBSD, but wasn’t sure what the user base is like. Anoop John (not verified) access_time 09 Dec 2019 - 13:59 Yes I have come across quite a few customers who still use dialup as the only means of accessing net. For people who just use internet to check mail, dialup is the cheapest way to go. shankar (not verified) access_time 09 Dec 2019 - 13:59 I have read your above article. I have the same problem. I want to use the new Bharatiya Operating System Solution (BOSS) which is linux based. My dial up modem of D-Link is not detected in linux/BOSS neither I can get a driver for linux. D-Link company have informed that they do not have any modem supporting linux. Please inform whether you can send it by post, cost and methods available for payment. regards, shankar Add new comment

on 04th April 2007 / by webmaster
Linux is the epitome of the FLOSS model. Linux Leave a reply Your email address will not be published. Required fields are marked * Dewey J. Corl (not verified) access_time 09 Dec 2019 - 17:57 Linux is not ready for the general public! (I am a Ubuntu user). For proof, 1. try to simply print labels on a Dymo label printer. It takes a LOT of work to get to the ease of label printing already available in Windows and Mac. 2. try syncing a modern Palm based PDA. Yes, jpilot and others will sync the main data, but pictures and midi files do not get transferred without a lot of extra setup. These are examples of applications that are not ready for the general public. Since an operating system only supports applications, Linux is not ready to be a common desktop for the general public. While we are waiting for the applications to catch up, keep up the good work!! Anoop John (not verified) access_time 09 Dec 2019 - 17:57 Dewey Yes you may be right. But these are not applications that a common man would use. A common man would use one of these applications - Internet browser, Chat Client, Email Client, Document Writer, Presentation Creator, Spreadsheet Editor, Movie Viewer, Music Player, CD/DVD Writer. Both examples you cited are more specific applications that only a small percentage of the whole population uses. It will take time before those hardware vendors identify the need from their perspective to address the Linux community. Krishnadas (not verified) access_time 09 Dec 2019 - 17:57 Dear Mr Anoop, Thank you very much for the free installation of LINUX done in my PC. I am getting immersed in the LINUX and seeing the versatility. To my surprise, I am able to read one of my old backup CD(wherein lot of my valuable file exist) done in DIRECT CD wizard (a custom cd writing software of Easy Cd creator in WIN98) which could not be read in XP. Installation of old version of easycd creator/direct cd program was not possible in XP. I thought that possible i lost all data. Very pleasant start! Srikanth N. S. (not verified) access_time 09 Dec 2019 - 17:57 Hi Anoop, My friend is thrilled with Ubuntu. One of his grouses with windows was that after OS installation, everything else is to be installed separately which is a real headache. WHereas if u install Linux, everything is installed as a package and he is thrilled to bits! Let linux installation spread in Trivandrum and your service in this direction is highly appreciated. Kepp up the good work Regards. PDA Freak (not verified) access_time 09 Dec 2019 - 17:57 Is it possible to install linux on a packardbell notebook ? Pagination Current page 1 Page 2 Page 3 Next page Next › Last page Last » Add new comment

on 20th April 2007 / by webmaster
Linux has been growing in leaps and bounds in terms of internationalization. Linux Malayalam Open Source Ubuntu Leave a reply Your email address will not be published. Required fields are marked * Ranjith Antony (not verified) access_time 09 Dec 2019 - 10:56 Everything is fine an dandy. However, to read those websites which doesn't support unicode fonts you have to install padma firefox extension . Those websites include all malayalam newspaper websites including, deepika, manorama, keralakaumudi etc. These websites only support truetype fonts. TrueTypes are glyphs matching a malayalam character but doesn't have a hex code assigned to it. They use ASCII character set but with a different glyph. Just to read malayalam, you only need to perform the first 3 steps in Peringodan's blog, in addition to the hacks thats been explained in this blog post. PS: Its so funny; a tutorial to explain how to install malayalam read and write support is written in malayalam. Thats what called a chicken and egg problem. Cherry (not verified) access_time 09 Dec 2019 - 10:56 I’d like to point out a couple of things: a) Malayalam support is not an Ubuntu thing or a Linux thing… I am running NetBSD -current on my laptop with and I can type malayalam. Learning the key combinations is very easy and intuitive… it just requires attention and commitment. I learnt it in about a week and something. b) Mangleesh support for TeX has been around for a while. The TuX group in Trivandrum and specifically A.J.Alex have worked on very good quality latex support for malayalam. See: Just to set the record. Cheers, Cherry. vimal access_time 09 Dec 2019 - 10:56 Ready to use packages to support malayalam in Ubuntu 7.10 and Debian GNU/Linux Etch is available at . Pagination Current page 1 Page 2 Next page Next › Last page Last » Add new comment
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Gokul Das (not verified)
access_time 09 Dec 2019 - 17:57

When I tried the command "sudo systl -p", I got the message:
sudo: systl: command not found

However the command sysctl is present. Please confirm this and if possible, correct it.

access_time 09 Dec 2019 - 17:57

In reply to by Gokul Das (not verified)

Dear Gokul,

It was a typo which is corrected now. You need to type "sudo sysctl -p" for this to work

Joju Joshua
Team Zyxware

Anonymous (not verified)
access_time 09 Dec 2019 - 17:57

nice article, how can i speed up the internet using asianet modem

tintu (not verified)
access_time 09 Dec 2019 - 17:57

i tried saving sysctl.conf, but it said i didnt have the rights to save as i'm not the owner


I dont know whether you still face problem with broadband.

Try typing sudo gedit sysctl.conf at terminal and enter your password and then make the changes and try saving it. It will work.