Questions tagged [bandwidth]

The rate of data transfer. Bandwidth usually refers to Internet but it can also apply to other systems like the motherboard.

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How to limit memory access/bandwidth of processes or groups of them

I'm looking for a way to limit access to process memory. I have a system with an Intel CPU and integrated graphics. The integrated graphics card uses the RAM as video memory. Now I want to limit the ...
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What would be the best unix program to know which process is using the most bandwidth?

Zabbix is ​​warning us that the eth0 interface is having outgoing traffic of more than 800Mbp / s (from 1Gb) every day at six in the morning. I want to crontab some program that monitors from 5:50 to ...
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854 views

Limit bandwidth on a specific port in CentOS 7?

I am running CentOS 7 on my VPS and I would like to limit bandwidth on a specific port. I have looked around extensively, and out of the solutions I can find, either it's a limit placed on an ...
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38 views

Capture bandwidth usage from remote machine across time

I would like to capture the bandwidth usage to and from one specific remote machine across time on my system. iftop command is definitely one option, which gives the network usage, and has filtering , ...
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filter data going through nload ? Purpose : measure bandwidth consumption of a gateway?

I have a LinuxBox that has two functions : an internet gateway and a mail server. With nload I can monitor the traffic on the internet (WAN) interface, but that shows me both the gateway consumption ...
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48 views

How do I get the amount of internet data used throughout the day?

I need to set a cap to my internet usage and manage data usage to download things programmatically based on the amount of data I have consumed. Is there a way to find out how much internet data I ...
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Extreme slow connection to Client | CentOS 7

I have a CentOS 7 Server running on centos-release-7-6.1810.2.el7.centos.x86_64 The problem is not the Client connection, neither the Server connection is. But the connection between both is sadly ...
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391 views

How to block empty user agent

I'm using CentOS 7 on my server, and Apache2 as my web server. In AWStats in my Cpanel, I could see that I've a large bandwidth used by a bot called "empty user agent string" (see the pic attached). ...
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Seeing dead process in nethogs?

nethogs is a very useful tool to see which process(es) send/receive lots of network traffic. But as soon as the process exits, on the next display refresh nethogs no longer displays the process. Is ...
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61 views

Bandwidth utilization is more than max speed

Ethtool shows max speed is 1Gb/s. But in glances/SAR results in more than 1.7Gb/s. Can somebody clarify this... # ethtool ethX | grep -i speed Speed : 1000Mb/s there is no dropped packets till ...
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How to interpret the result of “lspci -vv” with respect to PCIe lanes and PCIe 2 vs 3 speeds?

I just came across this question and its excellent answers ("How to check how many lanes are used by the PCIe card?"). I am just looking at the output of lspci -vv for a GTX 1050ti graphics card and I ...
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Link Aggregation (Bonding) for bandwidth does not work when Link Aggregation Groups (LAG) set on smart switch

My question is: why does setting Link Aggregation Groups on the smart switch lower the bandwidth between two machines? I have finally achieved higher throughput (bandwidth) between two machines (...
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Is it possible to change the priority/nice values for an application's access to the NIC, giving precedence for bandwidth?

Is it possible to tune which applications receive the most bandwidth on a NIC, similar to the -20 to +20 Nice value but for bandwidth instead of processor-time? Transmission seems to choke out my ...
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66 views

Confirm and/or remove a possible traffic shaping setting

I have a Debian box up and running with KVM and two guest machines, which I will refer here as Tux-A and Tux-B, both bind to the same physical network card of the Host via a bridged connection. The ...
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virtual machines on LAN : speed and bandwidth questions

I would like to get some advices on VM servers. Indeed, instead of creating again and again the same VM in virtualbox, I am wondering if having a virtual machines server would not be better, but I ...
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Monitoring server bandwidth

I want to collect bandwidth usage statistics on my linux server. What I want to do, is to write a function (probably will use php exec) that will return the number of bytes, and then store it in DB. ...
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247 views

Using one PC on LAN to monitor traffic usage on other PC's on same LAN

I have a cisco epc3825 cablemodem that provides internet to a number of PC's via Wifi. I'd like to add Linux PC on the LAN to monitor traffic usage on all PC's on the same LAN. Is this possible? Would ...
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scp : -l option (bandwidth limiting) doesn't work when scp-ing from a remote server to another remote server

If I do : $ scp -l 1024 remote1:/path/to/file remote2:/path/to/destination I can see, using nload on remote1, that the bandwidth used by scp isn't limited to 1024 kbits/s like I thought. I found a ...
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474 views

Calculating the IOPS using Bandwidth

I have the write Bandwidth value received from the system and I need to calculate the write IOPS using the BW, Bandwidth = amount of data / second http://rickardnobel.se/storage-performance-iops-...
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How to measure the bandwidth of IPC

I need to do some measure about communication between two processes in my Ubuntu server. Saying that the two processes are process A and process B. A keeps sending data to B. I need to get two kinds ...
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810 views

How can I permanently associate tc qdisc commands with a particular interface?

I need to use a tc qdisc command to limit bandwidth usage on an interface created by openvpn. This works great when I run the command manually but occasionally the connection drops or restarts and ...
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Monitor MPSSH Progress, maybe PV?

Does anyone know of a good way to monitor the progress of mpssh? While making a large number of parallel connections it can take some time to complete. I'm trying to figure out a good way to monitor ...
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486 views

how to add bandwidth limit in ubuntu grive?

I use grive to sync folder with Google drive in Ubuntu, but I want to set a bandwidth limit on grive sync. I use this command for sync in 50 kbytes speed limit: grive -p /home/purval -U 50 -D 50 ...
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1k views

suspicious activity in the server?

I have a remote server and I got email about 90% consumption of bandwidth usage. So I logged in the server and checked and noticed that gnome-terminal was running in the server, which I haven't ...
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How to monitor tcp traffic between my localhost and IP adress

I would like to know how to monitor tcp traffic between my localhost and IP address keeping activities in a file. I tried iftop and tcptrack but I can not keep activities in a file. These tools don't ...
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896 views

duplicity with ssh tunneling

I'm relatively new to posting here, so please pardon infelicities. I'm trying to set up a duplicity backup through a 2-step ssh tunnel that I set up in config with one alias - call that alias "...
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Why does ddrescue not utilize full bandwidth?

I am running ddrescue from disk A to disk B. I had expected the slower of the disks would be running at full speed all the time and the other be running enough to keep up. Imagine my surprise when ...
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525 views

Remotely monitor network traffic of servers

Is it possible to remotely monitor network traffic of a server or more and log their result if necessary? The reason why I'm looking for a tool to capture my servers' network traffic, is that I was ...
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1answer
1k views

Why does this tc ingress limit command not work? (bandwidth drops off to nothing)

I'm trying to police my downstream bandwith for a given port - but it seems unless I have a gigantic limit and burst, the download stops completely IF="wlp3s0" LIMIT="100kbit" BURST="100kbit" PORT="...
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asking mercurial to show how much bandwidth it is using -

I have couple of repos. from which I pull sometimes. The default command is $ hg pull but that doesn't tell how much bandwidth is being used. I could use $sudo nethogs which is a bandwidth monitoring ...
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987 views

Using qdisc prio under htb class

I have 2 services, both operate over the same interface. Service A goal is keep high bandwidth while sending massive amount of data. Service B goal is low latency. Service B packets should always ...
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Calculating the total traffic generated by an application in a network

I have network (shown above) with the same application (Appx) running on the nodes (Linux nodes). This Appx has data to send the same copy of the Appx running in each node (i.e. each Appx generates ...
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8k views

What does the process /usr/libexec/packagekitd do?

This process keeps hogging my bandwidth: What does this process do? Is it safe to kill it? Is is safe to remove the package as a whole( to prevent it from starting up ever again) Or should I just ...
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931 views

Measure network consumption per program and month

I'm looking for a permanently-running monitor which can emit a monthly (or daily, etc) bandwidth report, in a per-program manner. Example desired output: Bandwidth consumption: last 30 days ==========...
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5k views

Monitor and limit internet bandwidth per network client

On a linux server with dhcpd that acts as the internet gateway for all clients of the LAN: how can I monitor the internet usage based on IP/MAC address, and deny internet access if a certain bandwidth ...
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414 views

Does mosh save bandwidth?

The mobile shell claims many benefits, especially with mobile connections. Many mobile plan prices scale with the amount of data transferred. So I wonder whether I can use Mosh to cut down in data ...
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1k views

How to test bandwidth and latency over ssh with X11?

I am working remotely on a machine using X11 trusted forwarding with 'ssh -Y`. How can I test the latency and bandwidth between me and the server?
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305 views

X Window Over network

What makes X Window or X11 protocol use a lot of bandwidth when used over a network (LTSP, etc.)? I've tried to read some docs but I can't find the answer
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2k views

Is there a way to throttle git while it's cloning a repo.?

Is there a way to tell git that only use so much bandwidth while cloning a repo. ? I may have multiple applications each of which demands network speeds, is there a way to tell git to do this ? I ...
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A single NIC has multiple IPs. Is it possible to throttle the speed per IP?

By "is it possible", I mean: does a solution (software, set of instructions, ..etc) already exists to accomplish this?
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2k views

Rate limit network but allow bursting per TCP connection before limiting

We have a Cisco router which allows for rate limiting (they call it policing) but permitting bursting on a per-TCP connection basis. For example, we can cap the bandwidth at 50mbit but the cap won't ...
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apt working unexpectedly on debian 8

Sometimes I'm noticing my bandwidth being all consumed although I'm not doing anything consuming, so I fire up nethogs on my wireless interface and I notice an apt process running without me starting ...
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100 views

Is there a brief way to view the top resource usage(CPU, memory or even bandwidth) of a program after its running?

I know I can use top to view the overall real-time CPU & Memory usage, and nload for overall real-time bandwidth usage. But I wish to view the maximum(or average) CPU, Memory, & bandwidth ...
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2k views

How to limit speed of file copy?

I am copying huge file from NFS mount using dd: dd if=/mnt/nfs/image.img of=/dev/sda I need to limit the speed of reading from NFS. How can I achieve it? The only precondition is to use some easy ...
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conntrack -E - traffic counter reporting

I'm currently in the process of writing small solution which would continuously receive output from conntrack -E command and along with some other stats, it would count/monitor traffic. The only ...
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1k views

record daily internet bandwidth usage

I am using internet connection with data cap. I want to record my daily internet usage in a file, is there any tool for this or perhaps you can suggest a script that would run as daemon? (I am not ...
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1k views

How to get RX and TX bytes querying iptables?

My intention is to monitor traffic from/to wan. To achieve that, i want to calculate outgoing and ingoing bytes/second, with iptables counters as data source. Unluckily, I'm not able to understand ...
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1k views

How to see the total bandwidth a process has used since it was started?

I am currently watching some process on my server and want to see how much bandwidth it has used in total since it has been started. I don't want to know its current usage, nor does nethogs / nload ...
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3k views

How to configure QoS per IP basis?

We have say 4 users in a private network connected to the Internet trough a Linux router with a public IP address that is doing network address translation (NAT). I have to configure QoS to give ...
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1k views

How to add all values in an array

I have been stuck on this for way to long now. Tried googling and couldn't find what I was looking for. I simply need to add all the values in an array.(array called packets) I have gotten to the ...