Questions tagged [bandwidth]

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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How to get Bandwidth stats from server Grafana + infulxdb [closed]

I have a requirement where I need to display Bandwidth statistics of server or container on grafana + Influx DB. I have seen some videos where we can fetch stats on SNMP enabled network device. but I ...
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124 views

How to prevent DDOS attack impact on Netlify? (downtime + bandwith usage/cost)

Situation: React app that was initially running on a VPS A few days ago, we were the target of a DDOS attack that took the site down. During the attack, we decided to migrate to Netlify. Once ...
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Is it possible to have high internet speed with low bandwidth?

I just came to understand that the bandwidth is just the difference between the highest and the lowest frequency of transmission. And i also have and understanding that higher the frequency ==> ...
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Find Bandwidth usage on app engine subdomains mappend on the same service

I have sole problem find bandwidth usage logs about different domains. This is the infrastructure: Domains mapped: example.com example2.com example3.com ... example10.com and every subdomain with ...
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How can I limit incoming/outgoing connection speeds based off IPs?

I want to limit the speed each IP can download/upload files for every application on my server to 1Mb/s Example IP 192.168.0.1 is downloading at sustained 900Kb/s through FTP server if the IP then ...
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69 views

Are we still limited by TCP Window Size when we want to fully utilize bandwidth from far away servers? [closed]

According to this website, as soon as round-trip time is increased, we lose a bit of our real-time capacity throughput to distant servers using default TCP Window size of 64KB. My network bandwidth is ...
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117 views

Should I chose higher CPU/low bandwidth or slightly slower CPU/higher bandwidth?

I have some servers that do a lot of file zipping operations. This also means that all the files have to be remotely downloaded first before being zipped and remotely uploaded, or remotely streamed to ...
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1answer
98 views

Measuring network bandwidth usage

One VM is sending data to another VM using rsync, both VMs are hosted on the same machine. I've got the task to measure the network bandwidth usage between both VMs and plot it. Plotting is easy once ...
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Does tc guarantee network bandwidth for a process or run as best effort?

I have a tc rule as follows: qdisc tbf 1: dev bwp93ce2ea9d929 root refcnt 2 rate 100Mbit burst 100Kb lat 25.0ms Is this rule guarantee network bandwidth to be 100Mbps or it'll throttle if not enough ...
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39 views

Track outgoing bandwidth usage of single IIS website on my VPS

I want to track OUTGOING bandwidth consumption from a single website in IIS to my site visitors (no internal traffic), e.g. CSS, images, HTML. The reason is that I want to know which package would be ...
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Reserve bandwidth for system (CentOs 7)

There are CentOs 7 server used like video file server. Users download video files from there. Download speed are limited. But 1 time per day server becomes unreachable and unpingable, Only reboot ...
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How to monitor the bandwidth with detailed files transfer information?

How can I know which file is transferring from instance to public internet? Is there any monitoring tools? When I am using bandwidth monitoring tool I have got whole output and input usage info but I ...
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Synology ipv6 outgoing bandwidth is very low, How to debug?

When I tested the network speed of nas (Synology 6.1), I found that the bandwidth was normal when the ipv4 address was used. But when using the ipv6 address, the incoming bandwidth is normal, but the ...
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RDP connection: comparison of the bandwidth usage of RPC and HTTP

When using remote desktop connection by Remmina, there are three options (under advanced Tab) for Gateway transport type: RPC HTTP Auto I am wondering how one can compare bandwidth impact (data / ...
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SMB maxing out bandwidth

I was wondering if there is something out there like pgbouncer but for SMB file servers? We are running a FreeNas 11.3 box and it has been running great! Ever since the shutdowns everyone is now ...
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Network Latency (mathematical) relation to bandwidth?

Let's say I have a 1Gbps bandwidth NIC. Can I mathematically derive what would my network latency be just from the bandwidth number?
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Bandwidth specification of Azure VMs

I am trying to set up Azure VMs in several regions with a guaranteed internet bandwidth of 2 Mbps. But I can't find the internet speed specification anywhere.
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How to scale Network Bandwidth for media server?

We are running a WebRTC Server to facilitate audio/video call feature on our app. But as our concurrent users keeps on increasing, we are facing network bandwidth issue. Max cap on google cloud vm ...
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How much PCI-E bandwidth can my SAS HDD array make use of?

Note: This question is real-world, but to analyse it, please note I've begun from a "theoretical" starting point of device and bus capability, which I acknowledge will not usually be at all ...
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how i can limit all(*) ip equally in linux

i am using this code.sh for limit the ip but I wanted to limit everyone equally ip * limit -d 1000kb -u 1000kb then result: google 1000Kbps, amazon 1000Kbps, any server ip 1000Kbps I searched on ufw,...
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35 views

How to use IPTables to keep a running total of the amount of data passed to and from a single IP?

I need to keep a running total of the number of bytes passed between my server and a remote server (port unspecific). I would like to keep this running total written in a file. I'm a bit new to ...
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Calculating server bandwidth and ssd reading speed

We have about 6tb of content, about 500mb per mp4 file and a bitrate of 1200 where we would need to stream to about 5000 concurrent users. I'm not very experienced on network engineering so i have ...
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How to do this load-balacing properly?

Let's say I rent 6 dedicated servers by a server provider for my website http://example.com: #1: 203.2.113.1 #2: 203.2.113.2 #3: 203.2.113.3 ... #6: 203.2.113.6 each of them having a maximum upload ...
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Does load balancing increase bandwidth?

Say that i have a server that has 1Gbit bandwidth and i serve static files.Does adding another identical server and using a load balancer(running on the first server perhaps)double the bandwidth?Or ...
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How to reduce my server's bandwidth usage?

I am running a video hosting server using Ubuntu 18.04 with nginx and server's configs are 500gb SSD, 100TB monthly bandwidth and 1gbps network. I am using nginx amplify to monitor all the traffic, ...
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How can I decide network speed of my dedicated server? [duplicate]

I have a dedicated server managed by WHM which has 100 websites. Bandwidth is 1 Gbps. I found another company which offers better CPU and RAM and HDD same price but bandwidth is 0.5 Gbps. I am not ...
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261 views

Trying to identify bandwidth usage/spike on Linux Debian VM

I am trying to identify an issue with a Linux (Debian) VM running under Hyper-V on Windows Server 2016. The issue is that, at random intervals I'm seeing massive spikes of bandwidth which is maxing ...
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i want to visualize myself about bandwidth of internet [closed]

as we know bandwidth is just a way through which data flows.20 Mbps internet means 20 mega bits per second and 40 Mbps means 40 mega bits per second.i guess 20 Mbps means 20 Mb of data is retrieved in ...
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228 views

Download speed slowdowns on Google Compute Engine file server

I did set up simple file server running on Apache (2.4) on one of my Compute Engine instances. The problem is the download speed for some people drops to radically low speeds. They do download they ...
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241 views

PHP script to calculate bandwidth per directory on a server?

I am tasked with figuring out the bandwidth used per directory on a parent directory in a linux server. We are hosting 10+ different client sites in 10+ different directories, and want to figure out ...
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max out bandwidth of old 3Gb/s SAS JBOD

I just acquired a JBOD which was made in 2011, it has 60 2TB 7.2k SATA disks but using SATA-to-SAS adapters on each disk. There are two IO modules on the enclosure, each module offer 4 SFF-8088 ports, ...
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Using trickle/trickled to limit bandwidth throughput of iperf3

I'm doing some throughput testing on some radio units that have narrow channel bandwidth settings (for example sub 250KHz bandwidth). During my testing of iperf3, I noticed that the slowest speed it ...
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528 views

How can I limit the bandwidth over an SSHFS mount?

I am transfering large media files to my local machine over an SSHFS mount. I am not too concerned about speed and want to provide a better QOS to other network services and so want to limit the ...
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362 views

Limit network bandwidth on fixed rate for all connections/users

I am looking for the commands in Linux to limit the rate of upload/download for all users to the fixed rate. I have three Linux commands that limit the network rate on OS. tc qdisc add dev eth0 root ...
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59 views

Lot of bandwidth consumed in Get Request to website served by Apache

Can someone help me to identify the reason for so much bandwidth consumption by our website, the webserver is Apache, and is hosted in AWS Ec2 instance along with some other websites. In a single day ...
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1answer
380 views

Using tc to decrease bandwidth to a specific destination address

I am trying to find the shortest path between two hosts H1 and H2 using Dijkstra code. Setting a condition in one of the switches on that path. the condition is: if the packet sending to H2 then ...
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Centos server bandwidth

I have dedicated server with “Basic Unmetered 1 Gbit/sec” bandwidth, I install a centos 7 on it and using Apache, I used it to make a website for sharing video files, My problem is when visitors use ...
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1k views

Link bandwidth limiting by using tc

I am a newbie network engineer. I am trying to understand the Linux command tc. I made a simple network, consisting of two hosts H1, H2 and a switch S1 connecting them by using Mininet. Then, I ...
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694 views

Upload speed to Google Cloud machine is 1.1Gbps [closed]

I use GCP VMs very often. Create and delete once chunk of work is done. I need to upload large data file every time. Consistently it uploads at 1.1Gbps average speed. Internet connection is 80Gbps (...
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199 views

Limit Google Cloud Platform instance bandwidth

On Google Cloud Platform, is there a way to limit the bandwidth allowed for a specific instance? I mean specify a limit like 10TB of traffic monthly, or something like that. Because from what I see ...
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12k views

How to start iperf3 server in UDP mode?

I would like to test UDP connectivity with iperf3 but do not know how to start it in UDP server mode. iperf3 -s only opens a TCP socket: root@srv ~# lsof -i -P | grep iperf3 iperf3 21030 ...
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60 views

mpo/mtp 12 and 100G

Does one mpo/mtp-12 fo can transmit 100G datas ? I have doubt because of this picture : It seems I need 24fo to get 100G. But I have a Cisco QSFP-100G-SR4-S module which says it can support 100G on ...
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272 views

How exactly the network bandwidth is calculated and in which layer of OSI Model? [closed]

We can see everyday our bandwidth is calculated by ISP's , Mobile Telecoms and Cloud Services. But how exactly they calculate this bandwidth? Do they count number of tcp/udp packets in layer 4? If so, ...
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876 views

Throughput limit of a raid controller

I am a bit confused about the maximal theoretical throughput of my HP P410 Controller. When using SATA drives, they are limited to 3Gb/s per physical link (about 300mb/s real speed). Does it mean ...
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138 views

Can I limit bandwidth for certain IP address, subnet or VLAN on Cisco 881?

I have a router with several workstations running on the switched ports. I need to limit their WAN bandwidth. I tried to use rate-limit on Vlan1, but it looks like it had no effect. What is the ...
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Synology and vmware with 4 way MPIO slow iSCSI speeds

I am trying to achieve high iSCSI speeds between my ESX box, and the synology NAS. I am hoping to achieve a top speed of 300-400 Mb/s. But so far all i've reached is 150 - 170 MB/s. The main test ...
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128 views

Blended Bandwidth with multiple carriers How to configure IP address

I have seen many colocation companies offering something called "Blended Bandwidth" and that makes me wonder how do they do it? Here is my example. If I would get two internet services, from ISP-A ...
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2k views

Traffic control upload don't limit bandwidth

I'm making some rule to limit the bandwidth per ip connection on my VPN server. My command works for download but doesn't for upload, I don't know what I'm doing wrong here : #!/bin/bash TC='/usr/...
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204 views

OpenVPN Traffic Control on CentOS 7

I'm trying to give my OpenVPN some bandwidth limitation. I would like for example for each user give 10Mb/s for upload and download. I tried the following answer I found (Automatically Call a Script ...
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633 views

Log/list bandwidth usage by file on NGINX?

Is it possible to produce a list or log of the bandwidth usage by file on NGINX? Something like: BANDWIDTH USAGE LAST 7 DAYS by FILE; \Project.zip 1.8 GB \Docu8ment.doc 350 MB \logo.png 238 MB \...

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