Bandwidth in computing is a measure of how much data can be transferred over a medium in a given amount of time, mostly shown as MBit/s or GBit/s. It is the primary way of classifying the speed of computer networks or data buses.
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Finding the memory bandwidth of each core of my processor
Hi I am learning PETSc (a software for solving PDES' numerically in parallel) and I came this passage in the FAQ
High per-CPU memory performance is required. Each CPU (core in multi-core systems) ...
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How can I simulate a slow connection, or limit the bandwidth that Firefox can use?
Is there a way I can simulate various connection speeds from within Firefox?
I need to be able to check http://localhost with varying speeds.
I know there are standalone applications that can do ...
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0answers
9 views
Why the usage spikes?
I have a Verizon wireless account with a phone and a wireless router. I have a 2 gig data plan - I do not use much bandwidth, as I use my computer for email, web, writing, and development, much less ...
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1answer
23 views
Does the type of SATA port matter in regards to fileservers?
I want to build a dedicated home file server that will also be used for streaming numerous video files. Does the SATA bandwidth matter if I will be using 1tb 7200rpm drives? Also, would I be able to ...
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2answers
28 views
Will connecting to my external IP from my internal network flow through ISP?
I have my internal network: 192.168.0.0/24
My router is assigned the external ip: 231.123.11.12
My question is, if from one of my internal computers (192.168.0.100), I connect to the external IP, ...
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2answers
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How do I measure how much bandwidth Internet Radio hogs?
I was thinking about logging into Pandora at work like I do at home, but I'm concerned about sucking up all of the available bandwidth on the network with something that's not strictly work-related. I ...
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2answers
938 views
Something that *logs* network/traffic/bandwidth usage per process?
I have recently found NetHogs, a Linux tool for monitoring traffic per process in B/s. But I am looking for something that logs traffic per process in total B uploaded and downloaded. (Example, today ...
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3answers
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Limit Chrome's bandwidth
For web development purposes, I want to be able to throttle the bandwidth Chrome uses, especially for localhost connections.
I know that the add-on "Firefox Throttle" does that in Firefox; is there a ...
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1answer
43 views
Monitoring Internet data from modem
I'm about to get a new ADSL internet connection and the data available is split between me and two other housemates. As i am going to be the Administrator, i was wondering if there is any way to ...
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1answer
38 views
Monitor bandwidth usage per user in linux
I have "chrooted" my users in my Ubuntu Server and I need to monitor their bandwidth usage. Since they can access to a FTP, a SSH and a website runned by a chrooted PHP-FPM, I need to monitor all ...
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1answer
938 views
Bandwidth Monitoring for Linksys E4200
I have a Linksys E4200 router with about 10 computers connecting to it. I'm looking for a way to monitor bandwidth usage in real time. I am willing to install custom firmware if it can get the job ...
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1answer
2k views
How to limit max bandwidth per IP/MAC address
I have a client who would like to offer free bandwidth to his clientèle but limit the amount of downloaded bandwidth by either MAC address or IP address on a given day. Believe it or not, bandwidth is ...
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9answers
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Is there a good tool for monitoring network activity on Mac OS X?
Is there a good bit of software on Mac OS X that I can use to monitor incoming and outgoing network activity? Nothing too geeky, I just want something simple to use.
I'm on version 10.6 (Snow ...
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0answers
26 views
How does Windows schedule network traffic?
I have a scenario where multiple connections are fighting for my upstream, and any one of them capable of utilizing 100% of what is available.
I've noticed that with three concurrent uploads, one via ...
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1answer
46 views
how can one setup a bandwidth control on a local network? [closed]
I want to setup bandwidth control for our network, by using a 'main' computer as the hub to manage bandwidths of other computers connected to the same network.
Also, I have a dedicated IP with my ...
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2answers
57 views
What is it that determines a network's bandwidth?
While I understand the concept of bandwidth in an Ethernet network - the Ethernet card in my computer "transmits" packets at a certain speed so I have a 100 Mbps network.
However, what gives other ...
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2answers
71 views
Can I use multiple vpn connections to increase bandwidth
There is wifi network in our college and it only connected to local server so if we want to use internet we have to connect to a vpn server using our specific user/pass the problem is bandwidth is ...
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0answers
38 views
Lower bandwidth on Linux than on Windows behind same wireless router
UPDATE: When I connected via an Ethernet cable directly running from my Linux laptop to my wireless router, I get the correct bandwdith (~10 Mbits/s). It's only when I connect wirelessly that my ...
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Determining contributors to elapsed time during a network request
The situation:
There is a remote server.
I am running a client program that makes calls to the server and requests data.
These requests perform very slowly.
The server limits the number of results ...
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5answers
6k views
Is there a way to limit bandwidth in Linux?
I've setup a network which will have 3 users, two of them use a Windows based operating system and the other uses a Linux based one. It is a 12 MB ADSL2 connection and the idea is to distribute the ...
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8answers
36k views
Netflix streaming: how much bandwidth does it use?
Title more or less says the question. I'm thinking about getting netflix, but want to make sure that our connect is fast enough to watch movies streamed.
So: what is the bandwidth used by netflix, ...
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1answer
752 views
Throttling Bandwidth on Firefox
I currently use Firefox as my browser, and saw there was an add-on called "Firefox Throttle" that would limit my bandwidth usage for me. As I am on an overall low data cap from my ISP, I wanted to use ...
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67 views
Approximately how much upload bandwidth per unit time does Spotify use? [closed]
A lot of people complain about Spotify using their upload bandwidth to stream music for other users. I'm not interested in complaining, but I am very interested in how much bandwidth is actually being ...
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1answer
25 views
Troubleshoot ssh -X a lot less responsive than VNC
I need to work on a GUI on a remote Linux (CentOs) server (I measured with iperf a ~8Mbits/sec connection between these two machines). I always used ssh -X instead of VNC for this since:
I need to ...
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2answers
213 views
Does PCIe 3.0 x8 provide enough bandwidth for a dual QSFP 40Gbit NIC?
I'm researching dual QSFP 40GBit network cards for a work project and have a few questions regarding PCIe 3.0's theoretical max bandwidth.
I'm currently looking at a dual QSFP PCIe 3.0 x8 card on CDW ...
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1answer
211 views
Method for testing bandwidth/speed between two set points
I often work from home and wanted to see how good the connection was between the two points. I can speed test both locations of course, but that isn't necessarily representative of the actual ...
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2answers
84 views
Extended bandwidth test
I need to document the quality of an internet connection (it's crap). Download speeds frequently jump between 12kbps and 3mbps, and packet loss usually sits around 20%, though blackouts lasting up to ...
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2answers
2k views
Using tc in Linux and dummynet in FreeBSD to limit bandwidth
We have a network product that runs on Linux and needs to be tested in reduced bandwidth networks.
We have been able to use 'tc' (traffic control) in Linux and dummynet in FreeBSD to inject delay ...
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1answer
20 views
Distributing proxy server
I am searching for some sort of proxy forwarder that will keep a stack of other proxy servers and will distribute connections between them. It will accept connections as usual proxy server, but then ...
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0answers
54 views
VPN Server On Windows Server 2008 R2 Bandwidth Throttling [closed]
I have set up a PPTP VPN Server in Windows Server 2008 R2 to share the Internet access with about 10 client PC.
Is there any solution to set the bandwidth throttling separately to each client?
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2answers
133 views
Extra Bandwidth - Why Still Lag In Games?
I have two computers - one for media streaming and one for gaming. My media streaming machine streams using the Asian P2P Media Streaming software Funshion. I've capped my download/upload speed on my ...
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3answers
75 views
What drawbacks are there when using memory that is faster than what is rated by the motherboard?
With the Core i7 platform, memory speeds of up to 1600MHz are officially supported, but kits are sold with speeds of up to 2133MHz and beyond.
Are the caveats/drawbacks of using faster-than-rated ...
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Make rsync use less bandwidth?
I use rsync to backup and synchronize network shares and my computer. I have this figured out.
The problem is, when using rsync to transfer files, it uses all the bandwidth it can. I want to cap it's ...
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1answer
46 views
test isp for bandwidth throttling
As of late youtube has been slow to load like 30-45 seconds in it will pause and buffer for 2-3 min. this happens on my wifes mac , my desktop and my work laptop so im pretty sure its not a hardware ...
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2answers
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Two routers, Same Internet Speed? [closed]
Trying to do some network load balancing at home.
Current situation
One guy is using NetFlix and its killing the internet speed for everybody connected on the wireless router and its actually ...
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1answer
185 views
Would being on paltalk 8 hours a day consume a lot of bandwidth?
My household bandwidth is over 60 GB per month, and my guess is that it is so high because someone listens to palk talk audio for over 8 hours per day.
Could palk talk really use this much bandwidth?
...
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1answer
82 views
How many users could I host on a VOIP server running on my home internet connection?
I have 25 Mbps on the downstream and 2 Mbps (250 KBps) on the upstream. I imagine upload speed is most important.
For a very high quality TeamSpeak audio codec, bandwidth transfer for a single user ...
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1answer
78 views
Restrict Bandwidth by IP
Is there an easy way to restrict the bandwidth available to a specific range of IPs?
My scenario is I've recently discovered that watching movies on LoveFilm uses a lot more bandwidth than other ...
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1answer
22 views
I have a CentOS Based server. Each domain has its own entry in vhosts. How can I find out what domains are using up bandwidth?
I have a CentOS Based server. Each domain has its own entry in vhosts.
Everything is logged in /var/log/httpd/access_log.
How can I find out what domains are using up bandwidth?
It is running ...
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5answers
5k views
How do I split an internet connection into 4 equal connections?
My 4 roomates and I have a problem:
One of my roomies is downloading torrents all the time. When somebody need make a call or doing something like you tube or a quiz using the internet conection. The ...
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2answers
8k views
How much bandwith is required to stream 1080p?
I am wondering how much bandwith is required to stream a 1080p movie from for example Youtube. I am aware that there may be things such as compression that come in play here, but can anyone provide a ...
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1answer
67 views
bandwidth control during youtube upload
I am having a slow internet connection and I am looking for some solution so that I can divide the 1/5th of available bandwidth to me for youtube uploads while at the same time working with other ...
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1answer
42 views
usenet server uses more bandwidth then I can measure
So here's the situation. I just started using usenet (server Newshosting), and I am on a bit of a limited bandwidth local network so I've been trying to figure out how much bandwidth I'm actually ...
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4answers
2k views
If I have two internet connections on osx, how can I use both to increase my bandwidth?
I understand that any one connection (such as a non-p2p download) will use just one of the connections, but since most normal activity involves multiple connections at once, I can still in theory ...
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1answer
38 views
Controlling bandwith while using GPRS on Windows 7 [duplicate]
I have an issue with my windows 7 machine using a lot of bandwith while connected to the internet. I'm trying to limit the bandwith by using Opera in Turbo mode, but some other program is sucking down ...
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1answer
66 views
download a large file using multiple connections and PCs
I have three seperate computers, which I currently do not have an OS on. I also have three seperate internet connections with connection speeds of 256K, 512K and 1M. I would like to use all three of ...
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2answers
104 views
Router speed not matching my ISP speed
My ISP recently upgraded me to 150 mbps, I can only get close to this if I wire directly from the modem to my computer. If I wire through my router it maxes at 55, the router model is Linksys E1550, ...
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0answers
113 views
Bind process to network interface
I'm attempting to perform simultaneous bandwidth tests from a single machine using multiple network interfaces. None of the utilities I've found so far allow me to do this. The closest was iperf ...
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1answer
451 views
Command line: how to get instantaneous bandwidth on a port
I'm trying to get the instantaneous bandwidth usage of eth0, port 10001. I've looked into using lots of different tools, but most of these seem to have an ncurses type output which isn't suitable for ...
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1answer
944 views
Is there any alternative firmware for ZTE zxv10 w300
I am sharing a ADSL connection with my friends using a ZTE w300 wireless router. However as many people are sharing the connection when one person is downloading the bandwidth cannot be throtelled. ...
