[kwlug-disc] Firefox resource usage

[Mikalai Birukou]

> If you have too many tabs open taking up a lot of memory, try the 
> OneTab extension. It takes all open tabs except pinned ones and turns 
> them into a list in one tab.

How does this OneTab works internally?

If it brings all processes into one process, is there the same 
separation level between them, that acts as an additional hurdle when 
one of pages is trying to escape or collect external info.


> Jan 31, 2022, 21:17 by kb at 2bits.com:
>
>     From another thread ...
>
>     On Mon, Jan 31, 2022 at 7:03 PM Chris Frey <cdfrey at foursquare.net>
>     wrote:
>
>         On Mon, Jan 31, 2022 at 12:46:43PM -0500, Doug Moen wrote:
>         > Sounds like Debian is too slow and bloated for this
>         hardware. I bet
>         > that Plan 9 would really fly on it. Plan 9 is from the right
>         era and
>         > there's been no large scale effort to make it a thousand
>         times slower
>         > and require a thousand times as much memory, as has happened
>         with
>         > Linux distros.
>
>         This may have been in jest, but boy howdy, is it real.
>
>         I'm still running Debian Buster 10, and recently due to
>         security updates
>         and end-of-life requiring the change, Firefox was updated from
>         78.15esr
>         to 91.5esr.  Watching youtube is now a 100% CPU grinding, fan
>         blowing,
>         choppy video, sluggish UI affair on my poor Thinkpad T510.
>
>         I kinda long for that bygone era.
>
>
>     I am on a Thinkpad 450. No idea when it was made. BIOS date is
>     2018, but
>     that may be an update that the previous owner applied, or I did
>     apply it
>     after I bought it.
>
>     Model number is 20BUS6150U
>     CPU is Intel Core i5-5300U CPU @ 2.30GHz
>
>     And I am on Xubuntu 20.04 64bit, with Firefox 96.0.
>
>     I definitely had issues with Firefox's memory usage, which was a
>     problem even
>     with 12GB of RAM. Turns out the issue was too many Firefox windows
>     opened.
>     Once I bookmarked the tabs in several windows and closed them, the
>     laptop
>     never goes to swap.
>
>     Here is dstat (again)
>
>     $ dstat --noupdate -tclpydr 10 | cat
>     ----system---- --total-cpu-usage-- ---load-avg--- ---procs---
>     ---system-- -dsk/total- --io/total-
>          time     |usr sys idl wai stl| 1m   5m  15m |run blk new| int
>       csw | read  writ| read  writ
>     31-01 21:09:48|  5   1  94   0   0|0.32 0.93 1.16|  0 0 1.3| 838
>      1918 |   0    19k|   0  1.00
>     31-01 21:09:58| 12   2  86   0   0|0.42 0.93 1.16|  0 0 0.6|1559
>      3998 |   0    21k|   0  3.60
>     31-01 21:10:08| 17   3  80   0   0|0.51 0.93 1.16|2.0 0 1.4|1947
>      4579 |   0  3686B|   0  0.30
>     31-01 21:10:18| 17   3  81   0   0|0.51 0.92 1.15|  0 0 1.4|1816
>      4434 |   0    20k|   0  0.60
>     31-01 21:10:28|  5   1  94   0   0|0.43 0.89 1.14|  0 0 1.3| 891
>      2082 |   0    21k|   0  2.80
>     31-01 21:10:38|  7   1  92   0   0|0.36 0.86 1.12|5.0 0 1.1| 940
>      2489 |   0   186k|   0  7.10
>
>     Then I start Firefox
>
>     31-01 21:10:48| 44   7  49   0   0|1.03 0.98 1.16|1.0   0 3.5|3307
>        16k|   0  17k|   0  0.60
>     31-01 21:10:58| 31   4  65   0   0|0.87 0.94 1.15|2.0 0 0.8|2382  
>      12k|   0   138k|   0  8.90
>     31-01 21:11:08| 27   4  69   0   0|0.73 0.91 1.14|1.0 0 1.4|2240  
>      12k|   0    46k|   0  4.40
>     31-01 21:11:18| 35   4  61   0   0|0.78 0.91 1.13|3.0 0 1.3|2749  
>      13k|   0    62k|   0  4.50
>     31-01 21:11:28| 34   4  62   0   0|0.82 0.92 1.13|  0 0 1.2|2496  
>      13k|   0    42k|   0  5.90
>     31-01 21:11:38| 34   6  60   0   0|1.01 0.95 1.14|3.0 0 1.2|2762  
>      13k|   0   296k|   0  12.2
>
>     Yes, CPU usage goes up (idle time goes down from 81% to 61%).
>     But the fan never kicks in and the laptop remains responsive.
>     Some Javascript on some other pages do cause the fan to kick in
>     though.
>
>     I do have NoScript, and UBlock Origin. But google.com
>     <http://google.com> and gstatic.com <http://gstatic.com> are allowed.
>     --
>     Khalid M. Baheyeldin
>     2bits.com <http://2bits.com>, Inc.
>     Fast Reliable Drupal
>     Drupal performance optimization, hosting and consulting.
>     "Sooner or later, this combustible mixture of ignorance and power
>     is going to blow up in our faces." -- Dr. Carl Sagan
>
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