Download speeds limited on gigabit internet connection
Categories
(Core :: Networking, defect, P3)
Tracking
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Performance Impact | medium |
People
(Reporter: mozilla, Unassigned)
References
(Blocks 1 open bug)
Details
(Keywords: perf, Whiteboard: [necko-triaged])
Attachments
(1 file)
2.15 KB,
text/plain
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Details |
Updated•9 years ago
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Updated•9 years ago
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Updated•9 years ago
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Comment 1•9 years ago
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Comment 2•8 years ago
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Comment 3•8 years ago
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Ookla Speedtest.net results comparison for Firefox 70 on both, Windows 10 1903, and Linux Mint 19.2 with multiple browsers & desktop and CLI apps.
I can confirm that I'm experiencing the same issue in Windows 10 1903 (64-bit) and Linux Mint 19.2 64-bit Cinnamon. My download speed seems to be limited to around 300 Mbps using Firefox 70.0.1 (64-bit) on Windows 10. The situations is just a little bit better on Linux Mint. I've noticed that all browsers seems to suffer some performance penalty vs the Ookla desktop app and CLI tool. The straight desktop app seems to get the best performance. Chrome and Brave get about the same, which is slightly less. Firefox's speed is pitiful vs its competition. Obviously, this will need to be rectified as we're about to enter the 10Gbase-T era. I don't see how Firefox can expect to continue without a major overhaul and speed boost.
Comment 8•5 years ago
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Same problem here Windows 7 64-bit. Firefox is limited to 300 Mbps. Chrome reaches ~920 Mbps.
Comment 9•5 years ago
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Also this problem seems only to appear over HTTPS, over HTTP the regular speed of 920 ish is achieved.
Comment 10•4 years ago
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(In reply to Loreno Heer from comment #9)
Also this problem seems only to appear over HTTPS, over HTTP the regular speed of 920 ish is achieved.
I can confirm this speed limit issue. Firefox's download speed is throttled at 250mbps for me using the latest Firefox 64-bit. And as Loreno Heer said above, it appears to only affect HTTPS sites, not HTTP. This bug has been submitted over four years ago and still not resolved. Please see the support thread I made about this bug for more info: https://support.mozilla.org/en-US/questions/1327222
Comment 11•3 years ago
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I have the same issue here.
O upgraded my internet plan to 600 Mbps (download) / 300 Mbps (upload) and Firefox is the only browser that can't reach my full speed.
Here my tests with Ookla Speedtest:
Mozilla Firefox v99.0 (64-bits)
https://www.speedtest.net/result/12994244380
(295 Mbps Down / 279 Mbps Up)
Google Chrome v100.0.4896.75 (64-bits)
https://www.speedtest.net/result/12994253267
(643 Mbps Down / 337 Mbps Up)
Microsoft Edge v100.0.1185.29 (64-bits)
https://www.speedtest.net/result/12994258092
(666 Mbps Down / 333 Mbps Up)
Ookla Speedtest App for Windows v1.15.163.0
https://www.speedtest.net/my-result/d/4ac2429b-fe40-448c-9c38-39aecf1c5952
(741 Mbps Down / 374 Mbps Up)
I have a wired connection to internet with my desktop computer.
OS: Windows 10 Pro (64-bit) 21H2 Build 19044.1620
Comment 12•3 years ago
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Me too. Windows 10, two different network cards. Chrome, Edge >900mbit. Firefox 64bit <350mbit.
A lot speed tests. I can confirm that it does not occur on http speedtests (!) for example on http://kabelspeed.telekom-dienste.de/
First I thought it was a setting of network card.
https://www.glasfaserforum.de/forum/thread/1240-nur-300mbit-von-1gbit-auf-einem-rechner-geloest/?postID=10990#post10990
If I can help in any way, providing more data.. let me know.
What's wrong with your SSL Firefox?
Updated•3 years ago
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Comment 13•3 years ago
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Redirect a needinfo that is pending on an inactive user to the triage owner.
:kershaw, since the bug has recent activity, could you have a look please?
For more information, please visit auto_nag documentation.
Updated•3 years ago
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Comment 14•3 years ago
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Just to report that the issue has been resolved in some version of Firefox between 99.0.1 and 106.0.1.
Comment 15•3 years ago
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I have meanwhile Firefox 106.0.2 and problem still persists.
https://www.wieistmeineip.de
Chrome: 692mbit / 184mbit, Ping 12ms
Firefox: 224mbit/ 158mbit, Ping 12ms
Edge: 873 mbit / 163 mbit, Ping 10ms
https://www.deutsche-glasfaser.de/internet/speedtest
Chrome: 919mbit /515mbit, Ping 10ms
Firefox: 219 mbit / 226 mbit, Ping 11ms
Edge: 911 mbit / 431 mbit , Ping 11ms
https://www.speedtest.net/de
Chrome: 583 mbit / 516 mbit, Ping 8ms
Firefox: 209 mbit / 226 mbit, Ping 8ms
Edge: 891 mbit / 484 mbit, Ping 16ms
Comment 16•2 years ago
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Adam, Loreno,
Do you still see this problem?
If you do, please create a performance profile https://profiler.firefox.com/
Comment 17•2 years ago
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No change in internet speed in latest version.
Started Profiling went to speedtest.net did a test:
https://share.firefox.dev/3kBZds3
Comment 18•2 years ago
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Redirect a needinfo that is pending on an inactive user to the triage owner.
:smayya, since the bug has recent activity, could you have a look please?
For more information, please visit auto_nag documentation.
Updated•2 years ago
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Updated•2 years ago
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Comment 19•1 year ago
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Tested today with Firefox 106.02/Chrome 121 on Mac and unable to reproduce the reported issue with two referenced speed tests.
https://www.wieistmeineip.de
Chrome: 382mbit / 244mbit, Ping 108ms
Firefox: 336mbit/ 247.mbit, Ping 118ms
https://www.speedtest.net/de
Chrome: 654mbit / 771 mbit, Ping 6ms
Firefox: 680 mbit / 772 mbit, Ping 5ms
And https://www.speedtest.net
Chrome: 670mbit / 767mbit, Ping 4ms
Firefox: 674 mbit / 759mbit, Ping 5ms
Description
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