- Does Uploading Affect Download Speed For Mac
- Does Uploading Affect Download Speed For Pc
- Does Uploading Affect My Download Speed
- Does Uploading Affect Download Speed For Iphone
- Uploading Affect Download Speeds
I have the 20,127/893 Kbps service through CenturyLink DSL. I've ran speed test and it typically reports speeds close to that.
Oct 8, 2018 - When I upload something, will my download speed be affected by this and be. Internet: Why does downloading gets slower when you upload something? Feb 20, 2019 - However, if you feel like your download or upload speed is slower than it should be. At the same time as you, your download speed can be affected. Feel like you are not achieving expected speeds, please do the following.
Except whenever I upload something substantial. Like a video file to YouTube. The upload takes forever, which I understand because of the 893 Kbps upload speed, but the entire time it is uploading the download speed grinds to a halt. It is so bad I cannot even connect to SpeedTest.net to do a speed test. The networking between other computers in the house is fine. But as long as one computer is uploading, all the computers might as well be kicked off the internet. For example, pinging Google takes 5 seconds to resolve the DNS and then the requests time out.
I called CenturyLink's support and talked to them for an hour and they said everything is fine. They had me reboot my computer and modem a few times, which of course didn't help. Finally they sent me a new (refurbished) modem to get me off the phone. It behaves the same.
So my question is if this behavior is typical of CenturyLink DSL or if something is really screwed up. Perhaps there is something I can do it fix it without spending another hour rebooting my modem while I am talking to an inept support person.
Jim McKeeth
Jim McKeethJim McKeeth
3 Answers
The TCP protocol, which most Internet traffic uses, uses a 'sliding window' scheme to provide reliability. This means it will only send new contents (slide the window) when it receives the ACK messages indicating that part or whole of the current window has been received completely. So it requires frequent ACK messages to be send in the uplink for your download traffic to go through smoothly If the ACK messages are delayed or lost, the sender may slow down transmission and/or retransmit packets that you have already received.
![Download Download](https://www.ispreview.co.uk/ispnews/data/upimages/subfolders/2011%20Statistics/2011_isp_broadband_speeds.gif)
By default, packets are transmitted by the OS in the order they are generated by the applications, so the ACK packets are interleaved with your upload traffic randomly. Your ISP (or your network device) controls your bandwidth use by delaying packets when your transmission speed exceeds the limit (aka throttling). This delay can happen on any packet including the delay-sensitive ACK packets.
To solve this problem, you'll need some kind of priority system to make sure the ACK packets are not throttled. There are paid software solutions for this. You can also achieve a similar effect if you limit the upload speed to a value below your allocated upload bandwidth. Alternatively, you can use applications that transmit files through UDP which does not require ACK messages.
billc.cnbillc.cn
You have two things going on here:
- Your uploading to a server, which is using most of your upload bandwidth and a bit of your download bandwidth to talk to the server to ensure the file is being received properly.
- Your trying to access the internet, which is using your download speed to talk from the internet, and using your upload speed to talk back to the server, to ensure the browser is receiving the files properly.
See the issue?
Your download speed is governed by many things: Line quality, level of service, location, wiring in the house, speed of the computer, upload speed, and any aberrational load on the system.
So, when you are uploading something, which is taking most of your upload bandwidth, and then try to download something from the internet, that download process doesn't have full access to your upload bandwidth, thus your DOWNLOAD speed is significantly reduced.
zackrspvzackrspv
One solution to the problem of Centurylink's C3000Z modem download speed being killed when uploading, is to disable QoS. QoS sets a priority for VoIP (traffic shaping). So if you do not have VoIP service (which I do not) disabling QoS should give you about half (28Mbps) download speed while having it enabled when uploading a file (5Mbps) killed the download speed to .02Mbps. There is a setting in QoS to prioritize the download (set QoS direction), but I could not get it to stick. So I just disabled QoS altogether.
I do expect somewhat of a hit on the download speed when uploading, but it should not be half.
I will continue to look into this, but at least I have something working now with it disabled.
Don't believe those who say that uploading should kill your download, SINCE WHEN? Asynchronous does allow for the speed of your connection to work both ways efficiently.
user928837user928837
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You may find that with different browsers, your online capabilities vary. Whether you choose Google Chrome, Firefox, Internet Explorer, Safari or another browser, your Internet speed will not be affected. However, your browsing speed can vary when you choose one browser over another.
Your download and upload speed is determined by your Internet service provider. When you order a plan with a specific Internet speed, it should not vary too much from that number.
The determinants of speed
Websites, especially ones containing large amounts of media like images, videos or Flash, require a certain amount of Internet speed. Each browser has the ability to download and display these “extras,” but some may do it faster.
Browsing speeds also vary when you open multiple tabs. While one browser might be faster with only one window up, another browser could win with multiple tabs open.
Additionally, one browser could be faster than others at loading a single URL from the address bar.
How should you decide?
Does Uploading Affect Download Speed For Mac
Ultimately, there is no clear winner of the fastest browser. Even if there was, browsers are being updated all the time and what wins this round may come up short in a few months. There are many unique features of every browser, which sometimes affect their loading speeds. There are a few websites that allow you to test each browser’s speed on your device to see which one works best for your setup.
Does Uploading Affect Download Speed For Pc
Peacekeeper.futuremark.com allows you to test a browser’s speed. You can test installed browsers on tablets, smartphones, PCs and other devices. See which one is fastest for your device so that it can be your default browser.
Does Uploading Affect My Download Speed
Html5test.com is another great website to test your browser. Go to this website to receive a score. This number reflects how well your browser supports html5 – the markup language of most websites on the Internet
Which browser to use?
Does Uploading Affect Download Speed For Iphone
You should pick your default browser based on which features you like, how easy it is for you to use and how well it performs on your machine or device.
Uploading Affect Download Speeds
Sources:
http://lifehacker.com/5976082/browser-speed-tests-chrome-24-firefox-18-internet-explorer-10-and-opera-1212