Opening multiple tabs is causing extreme near standstill slowness
Hi y'all :) So in order to make a long story (due to me not testing another browser first thing, rather thinking it was my internet) shorter, i have confirmed the issue is within firefox mozilla. On to the problem;
Title says it all, when i open multiple tabs either quickly or all at once, firefox grinds down to an Extreme slowness. It's bad enough that i'm going to temporarily use chrome, even though i'm a lifelong mozilla user :)
Like i wrote i have confirmed it to be specifically an issue with mozilla and i have tried a firefox reset. It began december i think.
Windows 10 250/250 mbit fiber connection
Firefox Version: 72.0.2 Versions-ID: 20200117190643 Useragent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:72.0) Gecko/20100101 Firefox/72.0 OS: Windows_NT 10.0 Bootprocess: Aktiverad Multiprocess window: 2/2 Aktiverad som standard remote processer: 10
Chosen solution
So after some further testing i'm really confused. Something OTHER than firefox seems to limit firefox access to cpu... No matter what firefox won't use my rather beefy cpu, it just muppets about around 5-10% regardless.
At first i thought it was firefox because it started in december, but now i have further testet with ESR, v72, v71, v70 and v69, same darn issue...
Which are older versions than when the issue started (if it's cpu usage related).
Excluding everything ells possible i'm left with it's win 10 update since thats the only other change, but then wouldn't more people be getting the issue? Highly confused :(
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Have you tested opening a ton of tabs in Developer Edition (FF73) (https://www.mozilla.org/en-US/firefox/developer/) or Nightly (FF74) (https://www.mozilla.org/en-US/firefox/channel/desktop/#nightly) to see if it is still present? As you said it appeared in December, right?
Modified by Eve
Hi, evhenry! Thanks for the reply the different firefox versions did not help, but when i compared them to chrome in task manager i saw something that's probably the cause but i still don't know why so would still appreciate the help :)
So opening 10 tabs in chrome as baseline:
Chrome loads in att 600mb ram usage and pumps the cpu usage to 80% for a few seconds, loading all 10 tabs in less then 10sec, ending at a little over 1000mb ram loaded when all tabs are loaded.
Firefox, now there was a small differens in load time maybe a few % between the version and the numbers i saw correlate:
So the biggest diff and probably the cause, all version of firefox use only 5-8% of the cpu. Firefox normal: loads in at about 300mb ram Beta: about 350mb ram Dev: about 400mb ram Nightly: about 500mb ram.
And after that they all stabilize att 5-8% usage while slowly loading and the ram ticking up (towards the about 1000mb same as chrome i guess).
I waited for about 2min on nightly and it had ticked up to 650 and it looked like 30-40% of the tabs were loaded in varying states.
All three browsers are in the range of 200-250mb ram on default start.
Thanks ahead :D
Chosen Solution
So after some further testing i'm really confused. Something OTHER than firefox seems to limit firefox access to cpu... No matter what firefox won't use my rather beefy cpu, it just muppets about around 5-10% regardless.
At first i thought it was firefox because it started in december, but now i have further testet with ESR, v72, v71, v70 and v69, same darn issue...
Which are older versions than when the issue started (if it's cpu usage related).
Excluding everything ells possible i'm left with it's win 10 update since thats the only other change, but then wouldn't more people be getting the issue? Highly confused :(