Arch Linux

ghfujianbin

Member

Registered: 2013-11-10

Posts: 21

Firefox users: sluggishness after upgrading to the 40.0.2?

Current version of Firefox on my system is very sluggish after couple hours with many tabs open (around 20 tabs). Haven't noticed this problem with previous versions. My system is Arch Linux 64bit with 8G of RAM and an Intel Core i5 4200u cpu. Firefox uses about 2G of RAM and its cpu usage is around 20 to 30 percent.

If I have to describe the sluggishness, it's like this:

    1. Switching/closing/opening tabs takes time.
    2. The animations of above operations are not smooth at all
    3. If I move my mouse across a column of links, the corresponding css effects that are supposed to happen lag big time.
    4. Same thing with those option links under each Firefox menu, like HELP, etc. The animations lag too much.
    5. Page scrolling also lags.

I've tried removing my profile and initiate a new one and reinstall extensions which are as below:

    1. adblock plus
    2.  fastest search
    3. greasemonkey (with only one userscript: Don't track me google)
    4. https everywhere
    5. foxy proxy standard

I also tried enabling hardware acceleration, but the sluggishness still happens.

Btw, the sites I visit are not flash heavy, so I don't think it could be caused by flash.

Does this happen to anyone else? Any input is appreciated, thanks!

Potomac

Member

Registered: 2011-12-25

Posts: 556

Re: Firefox users: sluggishness after upgrading to the 40.0.2?

no problem with my configuration who is old and less powerfull than yours ( intel pentium dual core 3.33 Ghz, 4 Gb ram )

check if downgrading firefox package to the previous version solves the bug,

if you have the same problem with firefox 39 then the problem is not firefox, maybe it's a problem with your graphic card driver, or the kernel 4.6.1

Potomac

Member

Registered: 2011-12-25

Posts: 556

Re: Firefox users: sluggishness after upgrading to the 40.0.2?

maybe it's this bug :

https://bugzilla.mozilla.org/show_bug.cgi?id=1194358

the workaround : in about:config, set option "layers.offmainthreadcomposition.enabled" to false

superchango

Member

From: Tenochtitlan

Registered: 2009-01-22

Posts: 133

Re: Firefox users: sluggishness after upgrading to the 40.0.2?

I have that problem and the only addon that i have installed too from your list is "Htpps everywhere".

My setup: Archlinux 32 bits Intel Atom 1.6 Ghzs 2 Gb Ram with an inboard Intel graphic Chip. I have Firefox's hardware acceleration enabled. 

Yeah, this started with 40.0.2.

---

"Yo creo que los muertos son tiernos. ¿Nos besamos?"

ghfujianbin

Member

Registered: 2013-11-10

Posts: 21

Re: Firefox users: sluggishness after upgrading to the 40.0.2?

I have that problem and the only addon that i have installed too from your list is "Htpps everywhere".

My setup: Archlinux 32 bits Intel Atom 1.6 Ghzs 2 Gb Ram with an inboard Intel graphic Chip. I have Firefox's hardware acceleration enabled. 

Yeah, this started with 40.0.2.

I also suspect Https everywhere. Currently rocking without it. So far so good. Will report back if anything.

ghfujianbin

Member

Registered: 2013-11-10

Posts: 21

Re: Firefox users: sluggishness after upgrading to the 40.0.2?

maybe it's this bug :

https://bugzilla.mozilla.org/show_bug.cgi?id=1194358

the workaround : in about:config, set option "layers.offmainthreadcomposition.enabled" to false

Thanks for the reference. It doesn't look like he's having the same problem though. But I see someone updated the wiki stating that  "layers.offmainthreadcomposition.enabled" defaults to "true" to make basic OMTC available for Linux since version 40, so I'll test it out and report back if anything.