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Questions tagged [network-speed]

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1answer
20 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: ...
-1
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1answer
17 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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0answers
37 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 ...
16
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6answers
5k 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 ...
0
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0answers
185 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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0answers
40 views

Slow connections affect how Nodejs app save data in Mongodb database?

I developed a Nodejs app for my organization. This app consists in three different forms to capture data based on three different topics. We are using a local mongodb database to store data. This ...
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1answer
19 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
36 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 ...
1
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0answers
62 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 ...
0
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1answer
66 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
52 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 ...
1
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1answer
39 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 ...
1
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0answers
14 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 ...
3
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2answers
299 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
188 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 ...
4
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0answers
130 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
780 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 ...
0
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0answers
68 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 ...
0
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0answers
154 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 ...
0
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2answers
443 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
110 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
269 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 ...
1
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2answers
572 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 ...
0
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0answers
67 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)....
0
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2answers
305 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 ...
1
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0answers
592 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. ...
1
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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
129 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 ...
1
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0answers
323 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
6k 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
3k 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
2k 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
71 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 ...
1
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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
2k 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
165 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 ...
0
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0answers
135 views

CPU usage of server extremely low and webpage load time high?

On a weekday at a time where very few use the optimized website on the server, the time for the page to completely load excluding 3rd party advertisements is about 0.6 seconds to 1 second. Now when a ...
0
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2answers
1k 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 ...
-1
votes
1answer
194 views

Debian Squeeze Slow SMB/Samba Write Speeds [closed]

Arch: x86_64 OS: Debian Sub-Version: Squeeze Prev Speed: 3-5MB Current Speed: 1MB Connection: WIFI WIFI Speed: 150Mbps I have been Google'in and testing for hours using the same file. I was ...
1
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2answers
210 views

Clients phone provider claiming high latency over UDP, how do I test?

A client of our uses a hosted phone solution for his 50 agent call centre. They use a hosted dialer who make the out going calls, once the connection is made the call is passed to my clients user ...
1
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2answers
1k views

Slow local area network speeds

Updated on 2014-10-09 Disclaimer This question is similar to Unexplained slow gigabit network speeds but because the latter is still unanswered after 5 years, and that I think I'm able to add more ...
0
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0answers
78 views

There's huge gap between two results for iperf

I used iperf -c FOO_NODE -t 120 -i 10 to test the network with the other node FOO_NODE, sometimes I get the result like: [ ID] Interval Transfer Bandwidth [ 3] 0.0-10.0 sec 3.75 MBytes ...
0
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0answers
192 views

Reduce Bandwidth on a cisco router (Cisco 877)

PS:Sorry for my english i'm french so i'll try to write the best as I can. I looking since a few weeks now for a command to reduce the bandwidth on a cisco router. I done try a lot off command and ...
6
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2answers
1k views

AWS - how to serve faster to oversea users

We have our infras relying on AWS in the us-east-1 region. (EC2, CloudFront, RDS, ElastiCache) We are now having more and more users from the APAC. Users start to complain about network speed to our ...
2
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1answer
229 views

Poor network performance on Server 2008 machines

I have a network consisting of about 40 Windows 7 machines (physical) and 2 servers (Virtual, ESX) which are Server 2008 Std ed (one is a SBS 2008 but they're the same 'under the hood'). Network is a ...
0
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2answers
659 views

How can I find my peak bandwidth usage over a period of time?

I am about to change Dedicated Server providers. My current provider says the uplink is 500M. The (potential) new host offers by default a 100M uplink and charges an extra $100/Month for a Gigabit ...
8
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1answer
12k views

Debugging slow transfer rate from server

I'm trying to explain this as simple but documented as possible. This is not exclusive to this server or my current ISP. I've seen the same exact issue over the years while being with different ISPs ...
0
votes
1answer
425 views

How to find vds/hosting with the best ping that I can have?

I'm living in tajikistan, and I want to purchase vps/dedicated server or at least good hosting outside of my country. One of important thing I want is to have a GOOD ping. For example ping to google....
1
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1answer
962 views

XenServer internal network speed

I have just configured a XenServer 6.2.0 (based on CentOS) host in a server with 2 high-end processors, 256 GB RAM and SSD storage. The distribution is up to date. We set up several virtual machines ...