Questions tagged [speedtest]

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Result is different between Phoronix test suite and openssl speed

I have the result from phoronix test suite openssl 3.1.0 and openssl 3.1.0 from phoronix folder. The result is different between phoronix and openssl. I don't understand how the value is calculated. ...
Oleg's user avatar
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2 votes
1 answer
100 views

Slow download speed when not using ExpressVPN; especially for overseas, especially for single-connection. Upload not affected

I have a confusing internet speed issue. My setup I have ostensibly a 100 up / 20 down plan (FTTP on Aus NBN). I also sometimes use ExpressVPN I am also testing across my phone and my desktop for ...
tim654321's user avatar
  • 121
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0 answers
160 views

Reason for slow download speeds in scp and rsync

I am trying to download some files using scp and rsync from a remote computer. The files are ~20 MB to few GB in size. Trying to download them gives me ~20-30 KBps during the day and ~5 MBps at night (...
Guddu's user avatar
  • 171
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1 answer
164 views

Wi-Fi speed is substantially less than my router speed

I recently had my speed increased to 250Mbps by my ISP. When I checked it with a number of speed checkers using an Ethernet cable it was indeed correct. However when I tried it on Wi-Fi sitting next ...
Michael Fitzgerald's user avatar
24 votes
4 answers
7k views

Test internet speed over a period of time

I´m having issues with slow internet. I have used speedtest.net at different times of the day and week and the result tells me that I get 10-20% of the bandwidth that I pay for. My ISP tells me that ...
kodeaben's user avatar
  • 353
0 votes
2 answers
3k views

Why does a WD HDD have 12 mb/s random write speed, 24 times as fast as its random read speed?

I used CrystalDiskMark to test an HDD whose model name is WDC WD40NDZW-11A8JS1 4000,7 GB. To my surprise, it's random write speed is whooping 12 mb/s, 24 times as fast as its random read speed. Not ...
zyc's user avatar
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0 answers
406 views

OpenVPN Slows Speeds when underlying raw speed increases

We are running OpenVPN on a router to an AWS cloud server to create a tunnel. AWS has over 1Gbps bandwidth up and down. We are using OpenVPN with no encryption (cipher-none) directly from the router. ...
BostonStack's user avatar
1 vote
0 answers
84 views

How does one test the LAN speed without a server?

When I need to test the intranet speed I typically use iperf3 at both ends (server and client) to check the flow rate between them. However recently when I tried some apps in the Play Store I noticed ...
phuclv's user avatar
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2 votes
2 answers
12k views

When does it make sense to run Ookla's speedtest as a single-threaded rather than multi-threaded connection?

Ookla's speedtest gives the option of running their speed test using a single-threaded or multi-threaded connection. According to this source: Most large downloads [over the web] and streaming ...
Friedrich Bauer's user avatar
2 votes
1 answer
517 views

Why does it matter whether a connection's speed is unstable when choosing between a single- or multi-threaded connection on Ookla's speedtest?

On Ookla's speedtest--on their website or app--users have the option of picking between a single-threaded or multi-threaded connection when doing a speed test. According to this source: Some ...
Friedrich Bauer's user avatar
1 vote
0 answers
106 views

How does Google WiFi device speed test work?

I was recently using the device speed test functionality on Google Wifi (https://support.google.com/wifi/answer/7578264) and it got me wondering how this works. Ping works to arbitrary devices because ...
Ari's user avatar
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1 answer
912 views

Does download speed actually decrease when you download from a far away server, or just delayed?

On speedtest.net, if I test my download speed to my ISP server, I would get my full download speed which is normal. When I test my internet speed to servers that are 1000-2000km away, I would get only ...
user avatar
1 vote
1 answer
245 views

Two PCs, Same Network, Completely Different Internet Speeds

Unsure what has happened over the past month. I've noticed on my gaming PC the speeds I receive are much lower than what they used to be. Specs: Game PC: i9-10900k 2080ti Asus Z490-E Gaming Mobo ...
Jake's user avatar
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1 vote
2 answers
1k views

Does internet speed mean per device or per modem?

When my ISP says my internet speed is 50mbps, does that mean each device I have in my household can receive up to 50mbps at once, or does that mean the sum total all the devices is up to 50mbps? Also ...
Crazyphysicist's user avatar
1 vote
0 answers
3k views

BT broadband test widely differs from other speed tests

Having to work mostly from home due to the coronavirus pandemic, I need a good stable internet connection for meetings via Microsoft Teams or WebEx. Recently, I found that my internet connection was ...
am304's user avatar
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0 answers
43 views

Why my devices does not give me a full internet speed

I am wondering for some questions on my mind related to internet speed compared on my many different devices. I have 5G internet on my home, and according to the internet provider, the speed that I ...
Q8root's user avatar
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0 votes
1 answer
56 views

Has my ISP tweaked my modem to prioritise speed tests?

Can it be that my ISP, Shaw, has tweaked my modem to sense when a speed test is run, and then give priority to that test? It seems that all online tests that use the Ookla's engine give same ...
boardrider's user avatar
  • 1,135
0 votes
2 answers
1k views

SSD Speed Half As Expected

I have bought a SSD recently. I have checked its speed with several software but speed is only half as expected. SSD is installed on SATA 3/6Gb/s and company informed SSD speed is about 550MB/s but ...
sajad's user avatar
  • 195
1 vote
0 answers
29 views

What's the theory of GET test of a domain?

What's the theory of speed test website's GET test? In the 17ce site: I input the domain cnblogs.com in it, and use GET request test. it will test the speed. one of the test point I click the ...
s-n-2's user avatar
  • 167
6 votes
4 answers
18k views

speedtest-cli very slow although network speed is fine

I'm encountering a strange problem here. On my local homeserver(Debian 9.9), speedtest-cli and it's python pendant are freaking slow. Since I use it to monitor my ISP connection stability, this is a ...
r4ptor's user avatar
  • 61
0 votes
0 answers
236 views

LAN speed is limited in an unexpected asymmetric way

I am paying for download/upload at 300/30 Mbps* (asterisks mean reference to the image below), which occasionally reaches peak of 350/350 Mbps** in speedtest.net measurement at the computer A, but ...
miroxlav's user avatar
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1 vote
0 answers
203 views

Why would my internet speed increase when connected through UPS?

The past few places I've lived over the years I've noticed a strange phenomenon: when I have my coaxial cable internet connection passing through the coaxial on my UPS and then into my modem, the ...
Wilson's user avatar
  • 11
2 votes
1 answer
1k views

Why is one of my devices getting gigabit internet speed but not the other if they both support it?

Today I got Fios gigabit internet. My desktop PC that has a MSI 970A-G43 Motherboard which I think is supposed to support up to 1000Mbps but I'm only getting around 300-400Mbps download and 600Mbps ...
Jorge Luque's user avatar
2 votes
0 answers
88 views

Upload speed won't increase since upgrade [closed]

Update: This problem got fixed by completely reinstalling windows. If you have similar issues, make sure you have the right LAN drivers installed and there is no software or service running behind ...
Aarivex's user avatar
  • 41
0 votes
1 answer
832 views

Strange speedtest results on different wireless devices. Why?

I have different Speedtest results on my Iphone (1st pic) and Win10 PC (2nd pic) which is odd. As one can see, IP is the same, both devices are in the same network, on the same router, and during the ...
Suncatcher's user avatar
  • 1,499
1 vote
0 answers
272 views

Hardcoding a specific server into Speedtest.net or Fast.com links

We have to measure speed on a number of similar devices, connected to various ISPs. It would be fair to test the speed against the same server, but choosing it manually each time before starting the ...
ᴍᴇʜᴏᴠ's user avatar
3 votes
1 answer
6k views

Linux tmpfs write speed slower than RAM speed

I have a HPE ProLiant DL360 Gen9 server, specs are: CPU: Intel Xeon 2 CPUs E5-2687W v3 @ 3.10GHz, 25MB L3 cache, 10 cores ea RAM: 8x 32GB PC4-17000 DDR4 2133MHz CAS-15 1.2V SDRAM DIMM (256 GB total) ...
atreyu's user avatar
  • 362
1 vote
2 answers
4k views

Different Results Among Different Speed Test Sites: What Causes This?

Out of 5 different speed test sites: http://www.bandwidthplace.com https://fast.com https://speedof.me http://.speedtest.net https://testmy.net My internet speed results vary widely: from 1-6 mbps ...
abcjme's user avatar
  • 441
2 votes
2 answers
4k views

Internet speed lower than Speedtest.net results during actual download

I am subscribed to VDSL2 with 10 Mbps Download and 1 Mbps Upload. My sync speeds on Modem's page is 11264 kbps down, 1119 kbps. On speedtest.net, I always get same result all the time at any given day;...
John Hark's user avatar
0 votes
1 answer
103 views

10/100 Mbit/s network enough to test ISP using speedtest-cli

Questions Using a device with a 10/100 Mbit/s Ethernet port can I still proof the speed of my 50 Mbit/s fibercable connection or do I need a Gbit/s connection? I so far assumed yes but a no from a ...
lony's user avatar
  • 131
19 votes
2 answers
89k views

How to determine a network cable's maximum speed?

I have some machines connected in my workplace network using Ethernet cables. I know some types of Ethernet cable can handle speeds up to 5 Gbps but I'm not sure which ones. So I want to determine the ...
Tak's user avatar
  • 531
37 votes
6 answers
11k views

Can Internet speed decrease the further away a certain (server in a) country is from you?

Is there a general rule of thumb, per how many thousands km your Internet speed can naturally decrease and by how much? Something like "10 Mbit/s per 1000 km". (I've got from this SE answer that ...
mohnstrudel's user avatar
1 vote
2 answers
12k views

How to test your router's data transfer speed? [duplicate]

I've an internet connection of 50Mbps, but on speed test on my laptop over WIFI, it shows variable speed, sometimes 20Mbps or sometimes even less than 1Mbps. So I connected WAN cable directly to my ...
sirajalam049's user avatar
0 votes
0 answers
126 views

Browser Based Speed Test vs Client Based

Update: Originally, I thought there was a difference in the browser-based speed test results because I missed the difference in units between them and my client network monitor. At first this ...
J. Adam Connor's user avatar
1 vote
1 answer
23k views

Slow download on VirtualBox Linux guest

I am running about a dozen various Linux guests under Windows 10 VirtualBox 5.1. On a guest, I have noticed that while upload speed is satisfactory (ca. 300 Mbit/s in bridged mode, that’s about the ...
Mr. Tao's user avatar
  • 478
1 vote
0 answers
102 views

WiFi Upload crashing on One PC on One network

Acer Aspire E15, MU-MIMO WiFi, Win10 x64, QCA 9377 Wireless Adaptor I ran a few speedtests with different connections, networks, and devices: Laptop 1, WiFi on home router: Upload test crashes ...
delyodobrev's user avatar
0 votes
1 answer
1k views

Slow internet speed over Ethernet

For unknown reason the internet over wired connection is extremely slow. Here's the setup: Cable modem -> Router (Netgear R7000, latest firmware) -> PCs; laptops, etc. At some point all internet ...
Sci-Tech's user avatar
1 vote
0 answers
527 views

Why my external USB 3 drive has better 4K write speed than WD Black?

Please take a look at the image below. I’m wondering why my external USB 3 2.5 drive has 4K speed write much faster than my internal WD Black 3.5 drive?
Zodler's user avatar
  • 21
2 votes
1 answer
2k views

Speedtest slow via SSH

I've got a small server at home (running Arch Linux) and I'm testing my internet speed. Using speedtest-cli directly from a terminal at the server I get DL speeds in the order of 30 Mbit/s and UL of ...
MichaelDeSanta's user avatar
-5 votes
1 answer
4k views

how do you calculate internet speed using pings? [closed]

When I try to check speed on SpeedTest.net, it says selecting best server based on pings. Does it calculate the speed using the ping request and reply packets if so how?
Geet Tendulkar's user avatar
0 votes
0 answers
2k views

Alfa AWUS036h has slow speedtest compared to my other wlan card

I am running Win10 (upgraded, not a clean install) and have two wlan cards. One of them, a qualcomm, was included in the packaging of something else when I bought my PC parts... so it is nothing ...
lucidbrot's user avatar
  • 538
0 votes
1 answer
703 views

Is traffic shaping for speed tests a legitimate approach?

VW recently got into a lot of trouble for designing a car that performed differently when being tested compared to when it was actually out on the road. This seems a bit analogous to ISPs providing ...
WBT's user avatar
  • 1,842
0 votes
1 answer
37 views

Strange Wi-Fi issue

I, along with my other two flatmates, are experiencing problems with our ISP, which basically means, he sucks. The deal, we signed, says the bandwidth should be up to 100 mbps, but it regularly slows ...
Kamil Kuczaj's user avatar
0 votes
2 answers
6k views

Why am i only getting half the advertised speed?

My ISP offers an internet speed for 20mb VDSL for 2 months and for free! So i signed up for no money charge, and a tech support came to my house to set up my new Internet, he showed and confirmed me ...
John Hark's user avatar
14 votes
2 answers
1k views

Different CPU info on Windows and Linux?

I have a (as in factory specs) 3.6 GHz AMD FM2 A8-Series A8 5600K CPU and There is at lease 0.2 GHz difference between hardware reports in Windows and Linux. I was tested on: Win7 ultimate x64 & ...
Dániel Sebestyén's user avatar
0 votes
1 answer
505 views

How to optimize LAN connection between two home computers

I'm trying to figure out how to optimize the connection between my home computers. Both have Intel CT Gigabit PCI-e network adapters using Jumbo packets, etc (both PCs are setup the same). I'm using ...
John's user avatar
  • 213
0 votes
0 answers
298 views

WIndows XP vs Windows 8 VPN speed

When connecting to a VPN using Windows XP I'm noticing my speedtest.net download rate tops out at 3-4Mbps while using Windows 8.1 I'm noticing speeds that are in excess of 15Mbps. I've even achieved ...
Andre's user avatar
  • 133
1 vote
1 answer
72 views

Benchmark performance 30% speedup in mains over battery operation?

This observation arose as I was evaluating the running time efficiency of various implementations of a prime sieve algorithm. The surprise was finding that differences between the best algorithms was ...
Assad Ebrahim's user avatar
2 votes
1 answer
594 views

I can't reach the download speed result of speedtest [closed]

I'm from the Philippines. I have a PLDT connection. My download speed at speedtest goes up to 1183kB/s but my download speed only reaches 300kB/s. Is there something wrong with my internet connection? ...
Renzo Bravo's user avatar
1 vote
0 answers
107 views

One computer on network slow - but it wasn't always?

Let me start by saying that I have a pretty good understanding of my computer and OS so I've covered the basics here. I'll give you all the details and hopefully I can get some good feedback. I'm ...
b3tac0d3's user avatar
  • 111