In computer networking and computer science, bandwidth, network bandwidth, data bandwidth, or digital bandwidth is a measure of available or consumed data communication resources expressed in bits/second or multiples of it (kilobits/s, megabits/s etc.).

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Find whats using all my servers bandwidth

TLDR: how can I dig deeper into my Mac mini OSX server to determine what processes are consuming so much bandwidth, or where all the inbound traffic is coming from? Resource caching is on, all ...
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1answer
840 views

Windows DNS consumes loads of bandwidth

I have some problems with my two AD/DNS servers for my hosted Exchange setup, as they suddently began to consume large amounts of bandwidth (~10mbit each), which I think is really strange, as they are ...
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2answers
129 views

Bandwidth and Speed monitoring software [closed]

I am looking to get some advice on what you guys think would be a good fit for my requirements. My goal is to find software which would monitor internet speed (UP/DOWN), ping times and more(possibly) ...
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100 views

Virtualmin Inbound Bandwidth Monitoring

I am hoping that someone can point me in the right direction of a Virtualmin plugin or script that will allow me to actively monitor INCOMING bandwidth usage on a per virtual server basis. The built ...
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0answers
263 views

FTP transfer speeds - each file seems to be limited

I'm not sure if this is an issue, or configuration problem, or just the way it is but I am doing a large transfer of files between data centres, Washington DC -> Salt Lake City, around 14TB total, ...
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1answer
835 views

squid proxy 2.7 limit bandwidth [closed]

I have a squid 2.7 proxy and i'm letting some friends use it for fun in school etc. However since i got a bandwidth limit on my vps that is hosting the proxy I need somehow to throttle the amount of ...
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1answer
65 views

Configure trickle to add guestOS

I want to configure Trickle to prioritize my bandwidth with an installed app on ubuntu, I understand the basic config: [ssh] Priority = 1 Time-Smoothing = 0.1 Length-Smoothing = 1 [www] Priority = 2 ...
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1answer
47 views

Storing pages with only client-side code in S3 over full EC2?

Question: Would storing pages in S3 with only client-side code reduce costs in comparison to hosting them in Amazon's EC2? Background: Right now I use a cms to manage all of my pages and users for a ...
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1answer
186 views

Bandwidth * Delay Product

I'm trying to calculate the bandwidth delay product between various hosts, and reading this wiki article, I am confused. From the acticle; Residential ADSL2+: 20 Mbit/s (from DSLAM to residential ...
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1answer
160 views

Linux Router - Share bandwidth per IPs with current active connections

We have a Linux machine running as a custom router, currently utilising Shorewall. This sits between our incoming internet connection and the internal LAN. What we would like to achieve is 'fair ...
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2answers
781 views

How do I reserve bandwidth for rsync?

Currently nginx uses all my bandwidth. How do I leave some for rsync?
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3answers
38k views

How to limit bandwidth speed from a router for a devices on a network? [closed]

How to limit bandwidth speed from a router for a devices on a network ? There are several devices accessing the internet thru a wireless network. I cannot change settings directly on the ...
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2answers
436 views

afp/smb transfers caps at 2 megabytes/sec, wireless N

I wanted to transfer files between two mac computers. The network is wireless-N and both computers have wireless-N modules in them. The problem is that when I transfer files between them, via file ...
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1answer
390 views

What is the maximum supported data rate for PCIe? [closed]

Given a particular generation and link width, how can I determine what the maximum bandwidth is? I've looked across the Internet and various unofficial sources appear to disagree on the numbers. ...
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2answers
196 views

Is there a linux command/tool that will provide end-to-end bandwidth information between local and external host?

CentOS 5.x At times, I've wanted to know what general bandwidth constraints exist between my servers and an external server that I don't have control over. Is there a linux command/tool that could ...
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1answer
805 views

Iperf bidirectional bandwidth measurement

Server side: # iperf -s ------------------------------------------------------------ Server listening on TCP port 5001 TCP window size: 85.3 KByte (default) ...
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0answers
48 views

Server suffering serious speed drop

As you can see from the picture http://i.imgur.com/UpDZh.png), my server is suffering a serious drop in speed. This is intermittent and has been happening for the past 3 or 4 hours. The server has ...
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1answer
1k views

Cisco ASA: Prevent any single internal host from saturating bandwidth of outside Internet interface

We have an ASA 5510 at the edge of our network connected to a 10Mb Internet pipe. All internal IPs are private so we have external and internal interfaces. I'd like to prevent any single internal host ...
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3answers
4k views

Rsync Throttle Upload Bandwidth --bwlimit=KBPS

I am looking to throttle the upload speed of my file transfers during an rsync process. Does --bwlimit=KBPS mean it sets the internet transfer speed, or the hard drive disk write speed? ...
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2answers
285 views

RDP Over Mobile Satellite Internet

I am planning a vacation to a destination that will not allow me to have cell or Internet service. I play a role in my organization such that in an emergency situation, my availability is of some ...
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1answer
258 views

Local network speed appears to be being limited

I have a dedicated server setup that has just started causing us issues. Our immediate problem, is that last week, could log into an admin page of one of our websites just fine, now we can't. It does ...
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1answer
877 views

How to measure how much bandwidth a ssh connection is using per day?

I have an ssh connection that I run to access a remote machine. At present I use autossh to keep the pipe open 24/7. I am curious as to how much the pipe alone uses bandwidth wise. How can I measure ...
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1answer
72 views

IMAP traffic bandwidth usage

I want to find out how much of my bandwidth is related to email downloads. We use Google Apps for our email and have around 60 iMAC users donwloading email via IMAP. Our firewall is an ISA Server ...
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1answer
363 views

measuring bandwidth per-user used by ssh server-side connections on linux

I'd like to be able to measure the bandwidth used by each user by their inbound ssh connections, into a linux box. I measure most other traffic using iptables and user-matching, but inbound ssh ...
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3answers
182 views

Cisco ASA and Cisco Switches, how do I determine top senders / receivers?

I'm dealing with a high bandwidth situation and need to determine what host is sending / receiving the most data. How can I get the logs necessary that will contain this information? I'm OK with ...
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1answer
421 views

Limit scp (with sshd on centos) speed / rate

I'd like to let users download / upload files via scp to my centos 6.0 system, it's connected to lan via Gigabit ethernet, but I don't want transfers to flow at that speed. I want to limit the speed ...
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1answer
964 views

How do I calculate my bandwidth requirements?

We have a facility that needs to upload approximately 20 3MB photos per minute to Amazon S3. These are coming from 10 different machines on our local network. We need to do this continuously for 16 ...
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2answers
359 views

Does google's web crawler download binary files?

My Google-fu is failing me right now. I'm trying to figure out whether Google's web crawler downloads non-image binary files when it spiders sites. I know it downloads (and indexes) images and PDFs, ...
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1answer
834 views

Stealing internet by changing MAC address? [closed]

OK - I have a static IP - and I have been on the same provider for years - its a wired network (a cable goes directly to my network card) - and the cable is connected to a switch on a pole in the ...
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1answer
44 views

Bandwidth and RAM for our VDS [closed]

We are planning give an iframe from our server to the site which daily visitor 500k. What do you think about how much do we need system resource such as bandwidth and RAM. Thanks
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1answer
394 views

linode server bandwidth

I am ready to deploy my startup on the web so i would like to start small and get a VPS from linode as i see many good reviews and see how its going... the thing is that on their website they state: ...
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1answer
505 views

Is it possible to get the most bandwidth on a shared network?

I have configured a simple LAN using Ubuntu router. We know that if we don't impose any restriction, total bandwidth of Internet will be distributed among LAN user. If any user try to get half of ...
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3answers
716 views

Why does a wired network slow down with user increase?

If you had a wired network, 20 PCs hooked up to a 100 Mbit/sec switch (same onboard ethernet port speed) and you were just sending some test data round. What is the technical explanation as to why 20 ...
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173 views

Server hard disk read speed and client download speed, is there a connection? [closed]

Ok so a client's download speed is only as fast as a server's upload speed, and vice versa. Based on the answers to this post: Does upload speed depend upon download speed of the server? In other ...
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1answer
537 views

Gateway Modem loses ability to DNS lookup intermittently, often under heavy load

We're using a Bell 2Wire Gateway modem/router as our only hub (with some switches attached). Intermittently, but frequently when a large download is initiated, all computers on our LAN lose the ...
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4answers
1k views

Amazon and bandwidth limits

This question may sound weird to some of you but I have never really used cloud and above all I'm still beginner in the web development and would be really thankful if someone could answer few of my ...
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1answer
135 views

monitoring multicast stream bandwidth

I have my own application(based on VLC Library). It's used to multicast a stream from server to client via the mmsh protocol. It streams 1 file from the server to 2 clients. How can I monitor the ...
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2answers
221 views

Server bandwidth usage monitoring

I'm using ubuntu 11.04. What I would like to be able to do, is to be able to view in a browser front end, the amount of in/out network data of the PROCESSES running on my machine. Anyone know if and ...
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1answer
93 views

Social Media event Bandwidth requirements

I have an one day event in July 2012, hosting 250 attendees for a social media event. We will be uploading live video to a website, allowing the press to access the web, and some vendors will be ...
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251 views

Monitoring _current_ bandwidth used by Apache

Afternoon gents, I'm trying to monitor and graph the currently used bandwidth by Apache, I've been trying to use mod_status with /server-status and just parsing this specific row: 16.1 requests/sec ...
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2answers
5k views

Speed up rsync by running multiple instances at once?

I have to transfer a big directory to another server. My problem is that i cannot use the full bandwidth that would be available, because one concurrent tcp stream does not get as fast. Basically ...
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1answer
198 views

How should I provision for a 30,000-listener Shoutcast stream? [closed]

My client wants to run a one-off live podcast on his blog, which is popular enough to land a couple million visits per month. Am I right in imagining that ShoutCast is the best way to handle that? ...
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3answers
182 views

Can a switch consume bandwidth?

I have a network with a router and a switch. At first my ISP's optical fiber is connected with media converter input port. Than Ethernet cable (output port of Media converter) is connected with the ...
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1answer
199 views

How to throttle bandwidth speed from VPS

I was wondering if you can throttle/boost the download speed from my VPS to me, because now and often I download a database which is quite big, typically 5-7GB. My side is quite slow (typically I have ...
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1answer
94 views

Do local cURL requests count towards my network transfer limit?

I have a purchased a hosting that allows me 10 GB of monthly transfer. Will this 10 GB of transfer be affected if I make some cURL requests, from-a-script-to-a-script on the same server (in this case ...
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2answers
264 views

CentOS 5.5 x86_64 VPS - A lot of inbound traffic when idle?

I have a CentOS VPS from UKWSD and I'm getting inbound traffic that I cannot understand. The VPS was setup yesterday and I installed vnstat this morning around 10am, since then the server was ...
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1answer
406 views

Server Hacked + Huge Bandwidth Usage Spike [duplicate]

Possible Duplicate: My server's been hacked EMERGENCY I run a couple of sites on Ubuntu via Rackspace Cloud Server. My site typically uses about 3 GB of outbound bandwidth a day. Today, ...
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5answers
1k views

Technologies that allow YouTube scale distribution?

Youtube as we know, is massive. It has thousand of concurrent users streaming at least 2 megabytes per video. Obviously, that gets to be a lot of traffic... far too much for any one server. What ...
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2answers
327 views

Linux (but not Windows) downloads take all our Internet bandwidth

At the company where I work, we have a perennial problem with large downloads (not P2P, not just updates) by Linux PCs (various Ubuntus) swamping our internet connection. For whatever reason, this is ...
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2answers
3k views

Tool to monitor bandwidth utilization per traffic (tc) class on linux

Some time in the past, i came across a siple tool that showed live in a 1sec interval, in human readable format, the bandwidth utilization seperated per tc class on your linux server. Unfortunately, i ...