Questions tagged [network-speed]

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22 views

Analyzing my entire internet experience

I need to produce a very detailed report of my internet connection. In more direct terms, I wanna know how fast my internet connection download and upload every asset in a webpage (a text, a ...
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2answers
98 views

Slow network speed on ESXi hosts

I have been dealing with this problem for about half a year (had the luxury of time) and hadn't managed to crack it, so I finally resigned and came over here to ask for help from others not just ...
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1answer
20 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 ...
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1answer
47 views

What's the direction of speedtest download/upload? [closed]

What's the direction of download and upload in speedtest? The Server is Hong Kong STC, my local is: 12.34.156.228. When I test the speed, you can see the DOWNLOAD 28.38Mbps and UPLOAD 22.77Mbps. I ...
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1answer
57 views

Windows reporting 1Gbps but file transfer speed only 100Mbps

Things I checked: Windows adapter status confirms 1 Gbps connection on both PCs Removed other PCs connected to the network Both PCs are connected to TP-Link Archer A6 Isolated HDD speed by using ...
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0answers
17 views

openvpn clustering and throttle network speed

I am currently using Ubuntu for an OpenVPN server and it is working well. Each connected device can get an IP Address from the DHCP provided by the OpenVPN server. But for our project, is there a way ...
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1answer
74 views

Why is there a difference in speed of forward and reverse traffic over 10 G network in iperf tool

I have a 10G network setup between my two servers (say, Server1 and Server2) and I'm using iperf tool to measure the bandwidth of the network. Here are test cases that I performed, Test Case 1: (...
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0answers
80 views

Low speed download on HTTP, HTTPS, SCP, SFTP

I did install nginx on Ubuntu server for serving files over HTTPS. Their size is ~40MB. When downloading I get a very low speed, around 28 kbps. I thought that maybe my setup of HTTPS is wrong and did ...
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0answers
42 views

Slow python based web servers in digitalocean

I was using cherrypy initially under apache2. It was downloading compressed file of size ~5-6 mb in around 16 seconds Also psycopg2 (postgresql library for python) was retrieving 19 mb json field from ...
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1answer
40 views

Why is upload way faster and more alternating in speed than download on local machine

I am writing a speed test to determine browser-server connection speed (js+php but I don't think it matters). I send a bunch of data-packages in different sizes and measure the time they need to reach ...
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0answers
62 views

impact on I/O using the same NIC for backup

I have a one node Ganeti cluster with KVM hypervisor with multiple VM's, one of them is backup VM with one NIC, which runs a backup software to make backups of other VM's and my own notebook. The ...
0
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1answer
106 views

What does a “Blended IP” mean in terms of speed?

I'm getting a server colocated at a facility and they stated the internet speed will be 10 Mbps Blended IP on 100 Mbps Network Port. What does blended IP mean?
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355 views

IIS ftp and http download speed very slow

My VPS bandwidth is around 50MBps(tested with SpeedTest) but max speed of each connection when downloading a file is limited to 90-100kbps. If number of connections when downloading a file increase to ...
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0answers
218 views

socat tun device very low throughput

I was tinkering around with socat and tried to use socat for creating a TUN device for tunneling between two debian stretch servers. However, throughput seemed very low and comparing with iperf ...
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1answer
38 views

Why do my P.L.Cs (Power line converters) devide the speed by two?

If I directly connect to my 100MB router with a CAT.5e cable, I get these results : $ speedtest --simple Ping: 8.617 ms Download: 92.54 Mbit/s Upload: 93.90 Mbit/s $ ethtool eth0 Settings for eth0: ...
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1answer
19 views

Network share slow down over time

We have a Mac mini 2018 which share the content of a Raid NAS and after like 6-7 days the read/write speed of the connected user drop down, what would be a good way to investigate what is the problem ?...
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263 views

Slow file transfer speed untill network service restart in CentOS

I have a Windows Server VM which connects to my Storage VMs running CentOS in another Data Centre over SFTP and FTP. The uplink between the servers are all 10Gbps and more and both VMs are ESXi ...
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6answers
7k views

Why the discrepancy between Speedtest and Wget?

My customer complains about low internet speeds. When measured with Speedtest.net speeds are acceptable. Periodic measured downloads are 10% to 30% of the nominal speed. I cannot explain that. Some ...
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0answers
828 views

OpenVPN Connection very slow. Server located in Hong Kong, and Client Desktop is in New York

I have a OpenVPN vps server in Hong Kong. The specs is just 1 Core 2.2ghz CPU and 1GB of RAM. The connection is a 100mbit. But when I connect from my desktop in NY, my speed is only 1-2mbit only. I'm ...
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1answer
20 views

Whether the Speed Auto can have a network speed reach to the switchport top?

My Juniper EX4300 Switch ge-0/0/42 switchport configuration is bellow: admin@1409A# run show interfaces ge-0/0/42 Physical interface: ge-0/0/42, Enabled, ...
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0answers
158 views

What factor impact network speed between VM significantly?

There is question about network between different server,but i got a different situation. I have two VM in a server,and I tried to test maximum network speed between two VM. OS : CentOS VSwitch ...
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0answers
118 views

Server Promoted to Domain Controller causes high ping times

We have recently (couple of months) been having issues with our internet, after dealing with our provider who states it is not their issue yet my boss and owner of the company is certain it is ...
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1answer
71 views

Bandwidth to hosts abroad [duplicate]

I have a server with 1 Gbps uplink. Testing gives me a download/upload speed of approx 600 Mbps to servers nearby in Europe, and 100 Mbps to servers in US. I want to host a server and I need to know ...
1
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1answer
122 views

Transfer speed to network share drops

I have an older HP Proliant ML350 G6 server with 1 x Xeon E5504 (2.0 ghz) and 8 gb ram. If I copy a large file (over 2 gb) to it from a windows 10 workstation, after about 1.5 gb the transfer speed ...
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1answer
45 views

Building reliable internet speed test tools

I'm interested in building a command-line speed test tool similar to the one used here. I started using it in a cron job to automatically check and record speeds at different times when we started ...
1
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1answer
40 views

Cheapest solution to monitor gigabit internet connection performance [closed]

I want to perform speedtest-cli performance tests of the internet connection of a fibre connection which is advertised to 1Gbps at regular intervals, say every hour, for one year. I have been looking ...
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0answers
15 views

Real World Speed Test via public Web Pages

Warning: I know up front that this is a question asking both for resources and opinions. Ideally, feedback/answers could address the spirit of the question, rather than shout it down. By spirit of the ...
2
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2answers
467 views

DRBD weird speed dips

couple of weeks ago I made a test setup for DRBD on couple of servers. The speed was fixed 90MB/800Mb as per my config for initial sync. Now I have reinstalled the OS (CentOS 7.4) to do final install ...
0
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1answer
220 views

What factors affect the speed of a VPN connection?

What hardware/software factors affect the speed of a VPN connection between two computers (1 Gbps network cards) on a lan with just a 1 Gbps switch between them ? More vague : Is it possible to ...
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0answers
168 views

Not sure I really get 10 Gbit between our servers on the 10 Gbit network

We have a 3 Unix (1 Ubuntu 2 Redhat) servers connected via their 10 Gbit network cards to a 10 Gbit switch (our IT person made sure we got the correct cables). We experience some odd behaviour when ...
8
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2answers
939 views

What type of hardware is required for a Gigabit connection?

Just in case the question I am asking is unclear or hard to understand, I am basically asking whether or not the type of hardware in a machine (such as a router or server) matters when using a gigabit ...
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0answers
91 views

Fibre Optic port moving to 1000Mb/s eventhough it is not in the supported link mode

In my Fibre Optic device (Linux 2.6.27, LXT971A PHY Transceiver), connection to the port is lost intermittently. While debugging with ETHtool, the following observation was observed: Settings for ...
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0answers
307 views

Same ethernet cards, same firmware, same drivers … different Advertising Mode

I have a strange issue. Having same cards, same drivers and same updated version of ethtool on 2 different OS, (XenServer7.* and centOS7.3). if I run on centOS ethtool on the card I get: Supported ...
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2answers
693 views

What's the operation about iperf udp

I'm trying to doing some bandwidth test by run iperf on my device, My Network Max Bandwith is 100 Mbps (test by speed test CLI - https://github.com/sivel/speedtest-cli) And I ran the iperf UDP ...
1
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1answer
180 views

How to prioritize my network traffic in Azure?

I created two VMs on Azure, one at Australia East and the other at Brazil South. The two VMs are of classic model and run Ubuntu 16.04. I created endpoints on these VMs and ran a server-client program ...
0
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1answer
711 views

How do I send all traffic generated by a command through a specific interface? Or, speed test for specific interface?

I am writing a script that basically scans OpenVPN servers using the openvpn client. By scanning I mean it checks whether if the server is accepting connections or not by attempting a connection, ping ...
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2answers
1k views

Bandwidth vs Uplink Port Speed

If a dedicated server has - 1. 1Gbps uplink port speed 2. 1Mbps unmetered bandwidth Under what circumstances will bandwidth be a limiting factor for serving requests and under what circumstances ...
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0answers
70 views

inconsistent speeds from different services. Mainly speedtest.net

I have had a few dedicated servers from online.net and they have all been great. But recently I have found issues with my connections on my new server. It is a Dedibox MD SSD 2015 Gen2 (Ubuntu 16.04)....
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2answers
568 views

What's the caculation for network speed reported with sar-n DEV output?

I am confused about the network speed outputs: If the report says: sar -n DEV 1 1 Linux 2.6.18-194.el5PAE (dev-db) 03/26/2011 _i686_ (8 CPU) 01:11:13 PM IFACE rxpck/s txpck/s ...
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0answers
755 views

Outbound requests from PHP 7 (but not PHP 5) are very slow

I have both PHP 7.0 and PHP 5.6 installed on my server (it's a dedicated server with plenty of resources), and outbound requests are very slow when made through PHP 7, but not when made through PHP 5. ...
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2answers
1k views

Cisco Router or Switch Limiting Internet Speed (Huge Slowdown)

I work in a very small office where we have approximately 5 office desktops wired to the internet through what appears to be CAT5 mixed with CAT5e wiring. The wires flow in this order: Desktops > ...
1
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1answer
148 views

Why is there a 40 Gigabit Ethernet (40GbE) standard in IEEE 802.3?

I've been wondering, why is there a 40 Gigabit Ethernet standard? Is there a reason why it's 40GbE and not 50GbE or why is there any step in between from 10GbE to 100GbE? Unfortunately my own ...
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0answers
372 views

HTTPS/HTTP2 slower over network but faster locally

I was asked to setup a newer, optimised tile server that provides tiles over HTTPS (Google has disabled some map APIs when the page is not HTTPS) and it seemed to be the right thing to do to also use ...
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2answers
11k views

How to find unix eth port link speed

I have small issue with my openwrt router. I want to know link-speed in format 10M,100M, 1000M, etc. or 10BaseT .. but I can't find it in /proc or with "ip" command also "dmesg" doesn't provide ...
3
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2answers
4k views

FTP transfers slow on a long fat pipe

We've recently gotten new internet - 100Mb/s fibre - and have been complaining bitterly to our new ISP about transfer speeds to some FTP servers in the USA (300ms away). To one server in particular, ...
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1answer
4k views

Difference between 1.0 Gbps & Auto Negotiation [closed]

I am downloading a huge file and was wondering on how to boost my Ethernet speed. I found this option called "Speed & Duplex" And there were a few options. Two of them were 1) 1.0 Gbps Full ...
0
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1answer
85 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
1k 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 ...
0
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1answer
3k views

Slow local area network speed [closed]

Background: Currently I have the following devices on my home network: Router Asus RT-N16 (Latest Firmware Version:3.0.0.4.376_3754) HP MicroServer Proliant Gen 8 (Windows Server 2012 Essentials) ...
1
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1answer
200 views

Tcp connection breaking, too fast for serial?

I've been having real difficulties getting a tcp connection to work with my web server. I think the issue might have something to do with the speed or ordering of the packets as the connection seems ...