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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Measure goodput before sending a response

My idea is to make it possible for web applications working on slower connections to fallback on alternative smaller asset versions(like images, videos, etc.). HTTP Live Streaming has similar behavior ...
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34 views

How can I find what file/user is consuming all the bandwidth on an SMB share? [on hold]

I manage a windows server (2012 R2) that has an SMB share used by people across my company. Recently, people have been complaining that the share is slow, and I'm seeing that the network bandwidth is ...
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1answer
20 views

What is “full bi-section bandwidth” on AWS

Could somebody explain the concept "full bi-section bandwidth" in the context of AWS? I've seen the term mentioned in several places (Placement Groups, VPC peering). Say, I launch four c4.8xlarge (10 ...
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13 views

FritzBox 7390: Too low download bandwidth [migrated]

A few weeks ago, I switched to a faster internet plan. Before the change, I had 6 MBit/s, now I should have 18 MBit/s. However my download has not become faster. My router is an AVM FritzBox 7390. I ...
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28 views

How do I measure total network traffic between two windows servers

At work we have a tool to measure total data in and out of a server but it doesn't have a way to show us total data transferred between specific servers. We have two Windows 2008 R2 servers. What's ...
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1answer
17 views

Scaling applications with heavy bandwidth needs

I've read 'youtube-architecture' but still do not understand one point. Assume I have a bit bigger content to deliver and one load balancer (nginx) points via reverse proxying to e.g. 10 back-end ...
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1answer
37 views

R1Soft Backup Very Slow?

Good evening Server Fault! I was recently contracted to help a company clean up and consolidate their network\server equipment, and I'm kind of stuck on one issue. I set them up with a new r1soft box ...
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1answer
35 views

Slow HTTP Throughput with NGinx

I had an issue the other day and you guys were very helpful. I've been racking my brain on this one for over a week. Basically, I have several nginx servers reverse proxying a python application ...
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1answer
23 views

Wordpress website consuming huge bandwidth on 404 pages

I am running a website on Wordpress and there is a lot of bandwidth consumption because of hits on 404. image showing the url being targeted to generate 404.. I am sure that the url ...
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1answer
50 views

Track what is causing AWS RDS to use insanely high bandwidth

We are having a high traffic (100K hit/day) Drupal news website hosted on AWS. Its behind cloudflare & 2 Load Balanced Varnish servers. For some reason the bandwidth usage is very high for RDS. ...
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1answer
75 views

Wondershaper does not work

I am using wondershaper to limit download upload speed. What it does is, it limits download but then it blocks upload. I have an 1 gbit connection and I want to limit it's download speed to 500 mbps ...
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1answer
480 views

Baidu Spider causing 3Gb of traffic a day - but I do business in China

I'm in a difficult situation, the Baidu spider is hitting my site causing about 3Gb a day worth of bandwidth. At the same time I do business in China so don't want to just block it. Has anyone else ...
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1answer
47 views

What is normal / expected Azure bandwidth

We are assisting a customer with their first Azure setup which is an Azure A3 server in Northern Europe running Windows 2012 R2, II7 and SQL along with their own application. The customer actually ...
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56 views

TP-Link AP EAP120 proper setup : SSID and 2.4GHz frequencies

We are implementing a Hotspot wifi solution at a camp site. The Buildings are 3 floors with 16 rooms in each floor. There are 16 buildings like that. Every room can have up to 10 people. So at peak ...
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1answer
26 views

How does port forwarding work as it pertains to bandwidth usage

Let's say there are two servers: Server A with a 500mbps of available bandwidth and Server B with 1gbps of available bandwidth(same vendor). If there are a port forwarding configured on Server A ...
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1answer
52 views

Commercial Dedicated vs Shared Residential Internet [duplicate]

I recently purchased a server to mess around with. I want to be able to host a few of my own sites, but my home internet is about 5Mbps up and down. I was looking into colo at my local DC and they are ...
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50 views

Is possible monitor the VPN's bandwidth with Check_MK? How?

I would like monitor the bandwidth in the VPN of Juniper SSG5 with Check_MK. Is possible? How? For the moment I am monitoring the status with the check automatic (check_mk-juniper_screenos_vpn). ...
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29 views

How could iptraf-ng be fixing throttled bandwidth?

I'm facing a somewhat funny problem and need some fresh solution ideas to tackle. I've got two servers, both hosted on Hyper-V. One of them is running IPFire with its red0 interface looking straight ...
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1answer
31 views

How much bandwidth would 2 nameservers use? [duplicate]

I'm in need of 2 branded nameservers for my clients' domains. Couldn't find any information about that, but how much bandwidth and bandwidth speed would I need for those two DNS servers "just in ...
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24 views

Need advice on Apache 2.2.22 Win Server 2003, memory leak

I'm running Apache 2.2.22 on Windows Server 2003 I'm serving some tutorial videos on the webpage to some registered users. The webpage has up to 30 users at a time, I know this because of analytics. ...
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1answer
77 views

Is it possible to measure the used bandwidth per port on linux?

I am wondering if there is a way to measure bandwidth by a tcp/udp port under Linux? Means I search for a way to be able to tell, tcp/53 needs now 1MBit/s, tcp/80 needs now 4.5MBit/s. iperf is able ...
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4answers
127 views

httpd web server serving content different download rate from clients?

For our game we host its static assets on a VM that has just httpd installed and running on it (of course along some native linux things), in order to serve web content. MPM configured is worker with ...
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32 views

openvpn bandwidth and ping fluctuations

Good day all I have recently setup an OpenVPN server (which I have done in the past, a few times), this server has a 1 Gbps connection, however using a standard openvpn server/client config, ...
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3answers
122 views

LSI 9260-8i limited to max 200 MB/s (independently from the drives)

LSI MegaRAID 9260-8i controller is limited to max 200 MB/s transfer rates. The server is a HP DL180 G6, with CentOS 7 (64 bits) and we are testing 4TB SAS drives (Model: WD4001FYYG). The controller is ...
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46 views

95/5 Network Billing - cap speeds once close to using up 5%

Is anyone aware of a good way to limit overages due to 95/5 burstable billing by capping a server's bandwidth once it gets close to having large peaks more than 5% of the time during the month? I'm ...
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1answer
414 views

Azure network latency between VM and Cloud Service

We have recently setup a virtual network that consists of one virtual machine (A3) running MSSQL, and one cloud service (Medium) running a web role. Our web role will connect to the database using ...
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166 views

Sometimes unable to tune Linux TCP stack for improved high-latency performance

I have been unsuccessfully trying to apply the TCP Tuning techniques discussed at http://fasterdata.es.net/host-tuning/ As you'll see when you read through the entire question, sometimes the es.net ...
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47 views

Firewall Throughputs [closed]

I am looking at purchasing a new UTM/Firewall device for the sole purpose of bandwidth control/utilization and guest modes. I have the following terms that are troubling and I would like someone to ...
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2answers
54 views

SAN capable of 25,000 IOPS at 75kb avg. size, where will my bottleneck be?

I just want to double check my findings here, hope someone out there is able to weight in on some of this. Let's say I have a SSD storage array capable of delivering 25,200 IOPS and it is connected ...
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1answer
84 views

Is iperf valid to measure network performance?

We are investigating performance issues in one of our software deployment between our application servers (Windows) and our Redis instances (Linux). On a 10 Gbits/s link single TCP connections can ...
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25 views

Server Bandwidth issues unexplained by Stats.. what else could it be?

So hit my server bandwidth cap (shared hosting) at 4GB today and i'm absolutely baffled as to why. All my site does is serve bytes of data to a few apps (about 3-4 devices for the past few weeks ...
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1answer
70 views

Video Streming server outbound bandwidth and providers [closed]

Imagine the case of Twitter Periscope or Meerkat.The paradigm of their servers is that they recieve video from users and then stream it to a large amount of users (say > 100K for the sake of this ...
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113 views

Two network adapters for a machine to double the transfer speed [closed]

i am new to this. In my scenario, i have a desktop pc running windows 7 and planning to set up a local web server using xampp for big file transfer in the lab. The problem is that,there are 80 ...
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2answers
60 views

How to test bandwidth [closed]

I have 2 MB Internet Line. 1 real IP how to check or confirm my line is dedicated or my IP is 103.244.185.188 please help me as soon as possible. How to confirm or test my Internet Line+IP share or ...
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1answer
65 views

Ubuntu server close connections unexpectedly after multiple downloads

When I connected to Ubuntu server via SSH connection and run script which downloads a lot of images, its quitting ssh connection after few seconds with error: "Write failed: Broken pipe". Then I can ...
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2answers
423 views

How do I monitor network usage on a Windows server?

I would like to monitor server bandwidth usage. The server OS is Windows Server 2012 This should give me as result the amount of data over a certain period of time and separate it by protocol and by ...
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1answer
41 views

What to do when an open source tool requires massive bandwidth? [closed]

I've written a real-time socket API that communicates with a data provider and emits data models to connections subscribed to model events. Imagine the provider is StackExchange and the model is a ...
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1answer
261 views

RTMP load-balancing via HAProxy

I've got a little problem to solve: I need to find a way to load balance, bandwidth-wise, the incoming RTMP streams on my servers. I have 2 RTMP servers (nginx-rtmp), let's call them S1 and S2. The ...
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88 views

Bandwidth Policing on Linux gateway - not QoS

I have a linux server providing NAT to a large subnet (/16) using iptables to-destination + multiple external ip's to survive port exhaustion. I've looked at using tc / htb such as here Limiting ...
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66 views

How to troubleshoot network bandwidth limitation

Using a dedicated server with 3gbps connection streaming, server crashes at 1Gbps. Pings go from 20ms to 100-500ms, server is slow or unresponsive, streams start buffering or drop. dmesg |grep eth0 [ ...
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1answer
48 views

GPO limited by system version (Windows Server 2012)?

Windows Server 2012 I want to enable this local GPO: Where it says "Supported on: Windows 7 or computers with BITS 3.5 installed" got me confused, because Windows Server 2012 has BITS 7.6 ...
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2answers
321 views

raid controller data transfer rate

I'm going to buy an 8-port raid controller for which the declared data trasfer rate is "Up to 6Gb/s per port". The declared connectors are "Two mini-SAS SFF8088". The maximum number of supported ...
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12 views

turn server hardware configuration [duplicate]

I want to deploy TURN server on CentOS 6.0 which can handle 5000 audio video connections at a time. Can any buddy give me minimum hardware requirement for it? Specifically number of CPU, RAM and ...
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1answer
100 views

Locating bandwidth bottleneck

I am using FFMPEG to encode a video stream that is sent to a server at EC2 through ELB. I was only able to get about 2Mbps/15fps throughput to the EC2 instance. Through process of elimination, I ...
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0answers
136 views

How to limit bandwidth from inside OpenVZ container without tc?

As the title says I would like to know if it is possible to limit bandwidth (download and upload) of OpenVZ container (from inside it) without use of tc or any additional kernel driver (VPS provider ...
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1answer
220 views

What's the catch for unlimited bandwidth for VPS? [closed]

I need to choose some VPS packages, so I started to google a lot of VPS companies. Typically, a VPS package should have a limited bandwidth(or say traffic, data transfer), such as 2TB, 3TB, etc. Then ...
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258 views

Squid delay pools delay_parameters bandwidth

I can not understand the documentation about delay_parameters params in squid. delay_pools 1 delay_class 1 4 delay_parameters 1 -1/-1 -1/-1 -1/-1 600/8000 What is the difference between the first ...
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1answer
64 views

Troubleshooting poor point to point (over internet) bandwidth between two machines

My problem started out as poor bandwidth between a 64 bit Win 7 Home OpenVPN server in location A (Northern Europe) and a Win 7 or Linux Client in location B (Southern Europe). Location A has FTTC ...
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1answer
75 views

NFS Server “outbound” bandwidth consumption

I need to understand about something in NFS (Server). Let say i have: Two Different Clouds (One Server on each) One NFS Server One Apache Server (as the NFS Client) with a NFS Mounted Directory ...
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2answers
238 views

Why does a traceroute from one location to another and vice versa show different paths?

I have recently be plagued by low download speeds from my server and was curious, so I ran a traceroute. (I have removed the end IP and the start IP). I achieve a download speed of 220Kb/s when I am ...