Networking :: Removing All Bandwidth Limitations
Apr 25, 2010
I have a network camera, with a linux OS. We need it to be really precise in its timing for the specific application we want it for. But it's not!
After killing some of the garbage processes on it (and having some achievements, but not enough), it seems that there's some kind of bandwidth limiting applied on the outgoing traffic.
My question: What are all the things that should be done on a machine, running linux, to remove all the bandwidth limitations?
Notes:
1- With my very basic knowledge about traffic shaping in linux, I have made these observations:
# tc qdisc ls dev eth0
qdisc pfifo_fast 0: root bands 3 priomap 1 2 2 2 1 2 0 0 1 1 1 1 1 1 1 1
# tc qdisc del dev eth0 root
RTNETLINK answers: No such file or directory
2- I am trying to download the images from an HTTP link, and I already have about 14Mbps. I want it to reach at least 50Mbps. I can download with speeds higher than this when downloading from another PC on a windows network. So I assume this is not a problem with the cables. Also the eth0 on the camera is said to be a 100Mbps device.
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Nov 18, 2010
I created a the class like this for shaping the packets with a specified bandwidth rate.....
tc qdisc del dev eth0 root
tc qdisc add dev eth0 root handle 1: htb default 15
tc class add dev eth0 parent 1:0 classid 1:1 htb rate 750kbit ceil 750kbit
tc class add dev eth0 parent 1:1 classid 1:3 htb rate 600kbit ceil 750kbit prio 0
For Our Requirement:-
I dont want to specify the bandwidth rate strictly like this rate750kbit ceil 750kbit,based on whatever speed is coming which should allocate the bandwidth rate for particular class...I need one application for finding the upcoming bandwidth & Is any other method is there for specify the bandwidth rate in a classes.
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Oct 15, 2010
Coming to the point, as per object, I'm playing ( read also as "messing up" ) with mldonkey since last weeks and I have managed to get it working correctly on my home network ( behind router and firewall ). Next step in my development plan was to enable remote access to mldonkey web interface from any external network, like for example a friend pc. I'm aware of the "IP Access Restriction" in the mldonkey configuration file (downloads.ini) but there I can only specify an ip ( or ip-range) to allow access.
So the question is: how can I manage to disable* ip restrictions upon access, so that with a DNS-aliasing service I can access mldonkey web page virtually from anywhere?
(*) = maybe this is not the correct word but it explains the concept.
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Jul 14, 2010
I need to make some solution for my home network, I have a linux server which is: Linux Centos 5.5. So, what I need to do is to make a virtual interface for my clients which set its bandwidth up to 1Mb/s shared to them, but my real bandwidth is 2Mb/s. Also, after that, I have two questions:
1. How to set this rate limitation to that interface?
2. How to edit this interface to let it work and route the client data to my ADSL router?
I'm already generate the virtual interface using webmin managment tool, so I need to set its rate and route data.
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May 27, 2009
We have a sipmle office network set up that we also use use to connect to the internet, however of late the number of users has increased thus slowing internet access. Bandwidth upgrade is not an option thus i have to do bandwidth shaping on our linux router. The question is how do set the squid configs to allow certain IP's range a certain percentage bandwidtheg 60% and furthe divide the rest. Alternatively how can allow certain IPs to have higher bandwidth access.
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Oct 5, 2009
I am renting a VPS from[URL].They do not supply a webhosting panel for restarting/shutting down or for seeing monthly bandwidth consumtion. I am running CentOS 5.3. I was wondering if theres any programs that you can install to view monthly/daily bandwidth consumption on our server?
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Jan 4, 2011
I'm considering setting up a virtual machine running Windows, with Ubuntu 10.10 as the host OS, for those cases where I have a Windows-only program.I understand that using a VM will lose some performance, but are there other limitations to what the OS in a virtual machine can do compared to "running on bare metal"?
For example:
Can a VM play games, like Dragon Age Origins or Civilization V? (Possibly with poorer framerates and/or lower resolution, but does it play at all?) Can a VM rip DVD/Blue-ray using AnyDVD or similar Windows program? Can a VM handle new hardware that requires dedicated drivers, but the drivers are only available for the OS running inside the VM? (Ex. graphics card, digital camera, card reader for smart card authentication.) Is it possible to say anything about "general limitations" of VMs, or is this wholly dependent on the specific VM?
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Apr 26, 2011
I noticed that firefox sometimes uses a lot of memory. Can something like setrlimit be used to control it? I tried to use it on the command line, but it didn't work.
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Jan 13, 2011
I need to share some space on my hard disk with my wife, over our home network. I'm dualbooting Ubuntu and Windows.
My Ubuntu partition is limited to 30GB, and the Windows partition gets all the remaining disk space. Does /host suffer size limitations while being accessed through Ubuntu, or it's size is the same as the Windows partition?
EDIT: For the record, she's using Windows XP on her machine, only... no dual boot. Couldn't get her off Windows yet, but i'm still trying
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Jun 8, 2011
confirm, 32bit Linux os can utilize only upto 4gb phisical memory?
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Sep 29, 2010
What are all the limitations in Redhat enterprise linux 5.3?
How much would it cost right now?
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Jul 16, 2010
Does anyone know if there is a size limitation for shared-memory segments in RHEL AS 4?
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Dec 18, 2009
Im looking for a program to monitor the ammount of bandwidth usage per network. Ex: I have lots of networks connected to one server, and i would like to know for example how much is the average bandwitdh usage for network 172.16.2.0/24 and 172.16.5.0/24 for one hour, for example.
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Mar 22, 2010
I'm doing some simulations (using Iperf) to obtain throughputs values of a link between two gigabit ethernet cards for different delays and different drop probability (using netem) .... Now I have to do a 3minute long simulation in which during the firstnute the bandwidth is 1000Mbit/s, 500Mbit/s during the second minute and 1000Mbit/s during ththird one....Does anybody know how can i do this type simulation
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May 14, 2010
I am trying to limit bandwidth of certain ip addresses on my server. I have been doing hours of reading and not getting very far...
So far I believe the iptables command is:
And now I just need the tc command to read those marks and limit bandwidth, I have a gigabit connection and would like to limit each of these ip addresses to 10mbit in and out.
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Nov 26, 2010
Calculating the available bandwidth methods IGI/PTR,PATHLOAD,SLOPS,PACKET PAIR...
I gone through above methodogies ,when i finish one methods(IGI/PTR) i came to know,one application should run in client side and another application should run in server side (i.e,) Internet Service Provider side,
In IGI/PTR method ./ptr-client.c & ./ptr-server.c is there .,if we want available bandwidth,I Should run ./ptr-client.c (in myside)correspondingly ./ptr-server.c then only we wil get a availble bandwidth...
My need is without run any application on the server side ./ptr-server.c like that,but I should develop the application only on client side (in my routerside based on linux)..
1:whether it is possible to get the available bandwidth run application in client side only?.if possible. how i implement the code in client side( only )for getting the available bandwidth ...whether any source code is available?...
I dont want to test the speedtest.in (in GUI )
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Sep 25, 2010
I am Network Administrator in a Degree College managing around 2500 Comps. My ISP has terminated its Internet link (15 Mbps) to our Linux Server (Installed 2 NIC) from where Internet connection is extended to rest of the machines in network. I am supposed to send different bandwidth to different departments say 5 Mbps to Hostel, 2 Mbps to Staff room etc. I am new to linux and don't know anything about Bandwidth Management in linux.
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May 1, 2010
I am connected with LAN. We have many computers with different OS viz.linux, windows etc. Now I want to know the bandwidth every computer is getting and using. Is there any Ubuntu packages to monitor this?
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Mar 7, 2011
I am using SQUID 2.6 on cent os. Squid as a proxy server is working fine. I want to manage my bandwidth according to my office staff.Like for top management users may allocate 1 MB and rest of the users as 256 kb.Kindly guide me that how can I do it ?
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Apr 15, 2011
My objective is when the throughput is increase my shell script is Print a message. But the Question is how to check the bandwidth.
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Feb 6, 2011
I'm looking for some utility that will measure my network bandwidth use and report it in ways that are human readable. Specifically, I want something that I can use to stay ahead of my mobile broadband plan's usage metering.
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May 11, 2010
dear can someone highly gui or text base/command line tool that use as "isp bandwidth monitoring tools in linux".i do have leased line,frame relay, wireless linke,dsl too. i want to monitor what is uploading and downloading.
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Aug 17, 2010
I want to use the tc rules for bandwidth control in my lan.i have a linux router(traffic shaper).how i can limit the amount of bandwidth every user has access to per day? For example, any user can't download more than 2 gb per day(or per month).
The information about lan's users(such as a group type,userid,etc.but not any thing about time limiting per user)is in ldap directory on ldap server.the linux server uses ldap server for authentication users when the user login.
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Apr 12, 2010
You may have seen some other posts by me about my final year college project. Im implementing a web based network management website. Iv got a lot of the functionality working at this stage but one part is allocating bandwidth.
Iv got an eircom 3mb broadband connection and I want to be able to split this between users. At the moment I only have my desktop and laptop on the network. Im looking for advice on how i can allocate bandwidth with iptables and/or the tc tool in ubuntu.
My website is on an ubuntu virtual machine and written in php. Whatever about running the iptables and tc commands from php I still need to figure out the actual commands i need to use in the first place.
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May 25, 2011
I have a proxy/gateway server with X routable addresses and X clients, each connecting to his corresponding address from my server. All clients have public static IP's. I need something like the output of 'pktstat -1 -w 10 -B -i eth0 -n -P -t -T' but that would indicate the biggest'traffic hogs' from my clients.
Something like:
67.78.89.90 <-> my.public.ip.1 1344KB/s up 289KB/s down
56.67.78.89 <-> my.public.ip.2 1203KB/s up 200KB/s down
With this output, I can limit the traffic passing thru my server using a bandwidth limiter on my.public.ip.1 and my.public.ip.2. Pktstat only shows the total traffic from-to the respective IP's gathered in a 10second interval (-w 10). I would like something that would indicate the bandwidth per ip more precisely, I don't want to divide the total traffic by 10 (seconds).
Please note that this will go in a cron job. The interactive tools like iftop are useless (I would like something like a text screenshot of iftop from which I could extract the needed information).
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Jan 25, 2011
Can ubuntu be configured to reserve more bandwidth for some domains at the expense of others?
Eg you are browsing facebook and data comes faster than on a tab where you are browsing ......
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Feb 14, 2010
I recently converted and .avi file to dvd .iso and when I try to play it in my dvd player. I get this message "playback prohibited by area limitations". I was wondering what does that mean and how do I get this movie to play.
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Nov 11, 2010
We have a DSL , how can we calculate the available bandwidth so that we can shape the packet, We can assume the bandwidth to be 100mbps on the ethernet interface However, in DSL devices, the train rate(Bandwidth rate ) is varies according to different situation. How can i get the available bandwidth rate(from varies)?. Any method is there for getting the available bandwidth value....
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Nov 26, 2010
Calculating the available bandwidth methods IGI/PTR,PATHLOAD,SLOPS,PACKET PAIR...I gone through above methodogies ,when i finish one methods(IGI/PTR) i came to know,one application should run in client side and another application should run in server side (i.e,) Internet Service Provider side,In IGI/PTR method ./ptr-client.c & ./ptr-server.c is there .,if we want available bandwidth,I Should run ./ptr-client.c (in myside)correspondingly ./ptr-server.c then only we wil get a availble bandwidth...My need is without run any application on the server side ./ptr-server.c like that,but I should develop the application only on client side (in my routerside based on linux).. 1:whether it is possible to get the available bandwidth run application in client side only?.if possiblehow i implement the code in client side( only )for getting the available bandwidth ...whether any source code is available?
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Jun 8, 2011
On occasion I see my bandwidth usage using the gnome system monitor going up to 300kbit/s. I just cant figure out what is causing it. I want to know what process or program in using my network like that? I do ssh into different machines and servers, where I would really like to beable to monitor bandwidth usage. It would be very useful to know which utilities people use to see what bandwidth is being used and by which applications / programs / processes / or threads. I don't even know where to start looking. The two small programs I have found are insufficient. bmon and bwm-ng. And tools like wireshark (packet sniffers) are over kill. I would like some thing in the middle, preferably text console based.
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