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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Why does downloading the same file twice double the download speed?

I am testing a small home setup consisting of a Windows 10 system with a Firefox fork and a headless Android 9 device, the latter of which provides a wireless mobile hotspot with an unlimited data ...
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Multiple VLANs Same Port: Bandwidth Usage [closed]

I came across a network that looks like the following: In order to have the server access to both the public internet and internal network (but without depending on the internal router) one port of ...
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Abnormally high ssh traffic between remote linux computers

Overview I work for a group that has several remote locations running multiple OpenSUSE Linux computers. These sites will generate and transfer data back to our local server, typically less than 1 GB ...
Theo's user avatar
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3 answers
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Unusually high bandwith starting every day at exactly 4am

Every day between exactly 4am and roughly 11-12am we're having this massive increase in bandwith which is causing a very high load on our server. I'm not able to pinpoint the exact cause and I was ...
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How should I distribute outgoing traffic load from a single server to multiple servers?

I have an app running on a VPS. My server sends HTTP requests to an external API at a very high rate. This has caused me to exceed my provider's outgoing traffic limit. My search on the internet has ...
Leonardo Hysesani's user avatar
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2 answers
283 views

How to find the bottleneck of network bandwidth from local machine to Azure VM and improve it? [closed]

I create an Azure VM with SKU Standard_D1_v21 in Southeast Asia. According to this doc, the expected bandwidth is 750Mbps. However, I test the connection bandwidth from my local machine to the VM, the ...
stanleyerror's user avatar
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1 answer
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What happens on the server when a multimedia file gets downloading/playing?

I have a video-based website. It gets slow when about 1k concurrent users watch/download a video. I'm trying to debug it to see what resource is weak to increase it. I executed htop command to see ...
stack's user avatar
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why read is faster when using O_DIRECT flag?

I copied a 10GB of file in my SSD which has read bandwidth of around 3.3GB/s, benchmarked using fio command. Here is the ref: https://cloud.google.com/compute/docs/disks/benchmarking-pd-performance I ...
Abdul Wadood's user avatar
3 votes
1 answer
624 views

What granularity does memory channel interleaving occur when enabled in BIOS?

Memory channel interleaving is a method of setting a physical address area which can be enabled in BIOS, so that all memory channels are alternately used to achieve best bandwidth and latency. I want ...
Frontier_Setter's user avatar
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How to realize a user-based bandwidth throttling in VPN or Proxy server

I created my own VPN or proxy server on a rented Ubuntu server. For example it may be an OpenVPN server with Pritunl or a Wireguard server with wg-easy or wg-install or firezone installation script. ...
Monerig's user avatar
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Any way to limit bandwidth per IP in network behind linux router

I whant to limit bandwith of clients from network behind my linux based NAT gateway. My clints is connected via wifi or directly via ethernet to router and receiving their IP address from DHCP. I want ...
Spider's user avatar
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Limit bandwidth for incoming packets to specific ip and port

I have a Linux server application running on a specific IP and PORT. Incoming packets need to be manipulated and put into an nfqueue based on sources and ports, for example: iptables -t raw -A ...
seq16's user avatar
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3 answers
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How to monitor outbound bandwidth usage in Linux?

Currently I use vnstat to monitor my bandwidth usage. What I want to achieve is to get data for making the decision whether to stay in a more expensive but unlimited cable based plan, or to switch to ...
jackthehipster's user avatar
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Benchmarking AWS outbound Internet bandwidth (egress) "up to 25 Gbps"

We conducted our tests on c6gn.2xlarge AWS instances located is us-east-1 region, which are advertised in AWS documentation to have a network performance of "Up to 25 Gbps" with a baseline ...
Eric's user avatar
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Bandwidth consumption of Amazon S3 bucket mounted with S3fs on a VPS

I have : VPS server on Vultr with web server and Wordpress installed. Uploads folder is mounted on Amazon S3 bucket using s3fs. If a user downloads a 1GB file from my website will the traffic be ...
Imad Sid's user avatar
1 vote
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Is a virtual server enough for a video uploading platform or do I need a hosting like AWS and Oracle? [duplicate]

I am developing a platform where the users can upload videos, ask for videos and download the videos uploaded by other users. I have developed the platform using Java Spring Boot, Angular and MongoDB ...
A H's user avatar
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1 answer
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Two bonded 10Gb nics on an ESXi guest OS not using full bandwidth

On an ESXi guest machine, with Ubuntu 18.04 operating system, two nics connected from two difference vswitch, each of them has a separate 10Gb uplink. I made a bonded nic from these two links with ...
raitech's user avatar
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How to calculate the QuickPath Interconnect (QPI) bandwidth?

For Xeon E5-2697 v2, Intel lists: Bus Speed = 8 GT/s # of QPI Links = 2 According to Wikipedia, one must know the QPI frequency and link width to calculate the QPI bandwidth, but these don't seem to ...
MWB's user avatar
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My SMTP server transferring out Terabytes of data in a day [duplicate]

We are having an issue with one of our SMTP servers. Problem arises since 3 weeks and is transferring out terabytes of data in a day. Any Idea why is this happening, or suggestion to dig out & ...
Khalil's user avatar
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Spotify Bot Using Massive Bandwidth on NGINX Cached Server?

I have a couple of podcasts I host on my site and I've noticed a disturbing trend the last couple of months: my site's bandwidth usage has gone up by 10x, but it appears most of it was a series of ...
Timothy R. Butler's user avatar
3 votes
1 answer
2k 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 ...
ludovico's user avatar
0 votes
2 answers
1k views

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 ==> ...
Nibin's user avatar
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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 ...
tidpe's user avatar
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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 ...
Toodarday's user avatar
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2 answers
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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 ...
Matuji's user avatar
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2 votes
2 answers
345 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 ...
Edwinner's user avatar
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2 votes
1 answer
298 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 ...
user14610638's user avatar
1 vote
1 answer
158 views

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 ...
Michel Gokan Khan's user avatar
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1 answer
794 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 ...
Adam's user avatar
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1 vote
0 answers
153 views

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 ...
BigBang's user avatar
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0 answers
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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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0 votes
2 answers
338 views

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?
Always_Beginner's user avatar
3 votes
1 answer
13k views

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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0 answers
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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 ...
hardik24's user avatar
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2 votes
1 answer
878 views

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 ...
Stilez's user avatar
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1 vote
0 answers
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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,...
Escanor Nanatsu no Taizai's user avatar
1 vote
1 answer
82 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 ...
macmeyers50's user avatar
-2 votes
1 answer
149 views

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 ...
Jeff Mann's user avatar
1 vote
4 answers
92 views

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 ...
Basj's user avatar
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1 vote
2 answers
985 views

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 ...
Alex Tselikas's user avatar
0 votes
0 answers
295 views

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, ...
Ayu's user avatar
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-3 votes
1 answer
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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 ...
borayeris's user avatar
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0 votes
1 answer
866 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 ...
omega1's user avatar
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-3 votes
1 answer
28 views

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 ...
dipan gyawali's user avatar
1 vote
1 answer
2k 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 ...
Siuda's user avatar
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0 votes
1 answer
688 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 ...
Zach Smith's user avatar
1 vote
0 answers
408 views

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, ...
R.Chu's user avatar
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0 votes
1 answer
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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 ...
Aaron Hesse's user avatar
0 votes
1 answer
1k 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 ...
dippynark's user avatar
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0 votes
2 answers
1k 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 ...
Hamid Samak's user avatar

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