[SOLVED] High cpu usage by firefox After power failure

Bapun007 · 10-14-2016, 08:04 PM

Hey guys,
I successfully able to solve the problem , I don't exactly know what solves the problem , but i changed some values [browser.sessionhistory.max_total_viewers(1),service.sync.syncinterval(600000),network.http.pipelinin g(true),network.http.pipelining.maxoptimistic-request(8) some others] at about:config,
I also disable flash hardware acceleration and firefox hardware acceleration.
This seem to fix the problem for now.

Code:

top - 06:25:49 up 14:40,  2 users,  load average: 0.59, 0.55, 0.95
Tasks: 188 total,   1 running, 187 sleeping,   0 stopped,   0 zombie
%Cpu(s):  3.7 us,  3.2 sy,  0.0 ni, 92.7 id,  0.2 wa,  0.0 hi,  0.2 si,  0.0 st
KiB Mem :  4092756 total,   310680 free,   538616 used,  3243460 buff/cache
KiB Swap: 11720076 total, 11710408 free,     9668 used.  3042700 avail Mem 

  PID USER      PR  NI    VIRT    RES    SHR S  %CPU %MEM     TIME+ COMMAND                                                                                                 
13136 bapun     20   0 1244852 490828  96788 S   6.3 12.0  14:38.70 firefox                                                                                                 
12795 bapun     20   0    4096   2644   2336 S   4.6  0.1   1:34.89 wmpower                                                                                                 
 1296 root      20   0  200332  77032  59456 S   1.3  1.9  60:55.83 Xorg                                                                                                    
12792 bapun     20   0    7732   5044   4156 S   1.0  0.1   0:14.39 wmnd                                                                                                    
13103 bapun     20   0  104204   8852   7324 S   1.0  0.2   0:22.21 conky                                                                                                   
12809 bapun     20   0    7692   3844   2432 S   0.7  0.1   0:13.14 compton                                                                                                 
14212 bapun     20   0    3908   2488   2084 R   0.7  0.1   0:00.03 top                                                                                                     
32732 root      20   0       0      0      0 S   0.7  0.0   0:03.02 kworker/1:1                                                                                             
    7 root      20   0       0      0      0 S   0.3  0.0   5:43.30 rcu_sched                                                                                               
12810 bapun     20   0  118268  43116  36492 S   0.3  1.1   0:03.48 yakuake                                                                                                 
30902 root      20   0       0      0      0 S   0.3  0.0   0:04.02 kworker/u4:0                                                                                            
    1 root      20   0    2116   1308   1284 S   0.0  0.0   0:02.46 init                                                                                                    
    2 root      20   0       0      0      0 S   0.0  0.0   0:00.03 kthreadd                                                                                                
    3 root      20   0       0      0      0 S   0.0  0.0   0:08.62 ksoftirqd/0                                                                                             
    5 root       0 -20       0      0      0 S   0.0  0.0   0:00.00 kworker/0:0H                                                                                            
    8 root      20   0       0      0      0 S   0.0  0.0   0:00.00 rcu_bh                                                                                                  
    9 root      rt   0       0      0      0 S   0.0  0.0   0:00.47 migration/0

But it still uses high cpu for html5, which is fine for now.

Thanks all for helping , i am marking the thread solved.

bassmadrigal · 10-14-2016, 09:06 PM

If you had to disable hardware acceleration, I wonder if it screwed something up with your video card drivers... then, since both Chrome and Firefox use hardware acceleration, it might've all been offloaded to the CPU, which as we know, is incredibly slow compared to the GPU for acceleration.

Darth Vader · 10-15-2016, 12:41 AM

Quote:

Originally Posted by bassmadrigal

If you had to disable hardware acceleration, I wonder if it screwed something up with your video card drivers... then, since both Chrome and Firefox use hardware acceleration, it might've all been offloaded to the CPU, which as we know, is incredibly slow compared to the GPU for acceleration.

There I agree with you, and looks like the thread title was in fact a false flag.

In fact, looking at OP's last top, I'm amazed to not see (on his last top) some kernel daemons like kdevtmpfs, kswapd0, writeback, etc...

Also, looks like he's a fan of very lightweight things, using the WindowMaker as desktop.

Then, my bet is that he heavy "customized" his operating system and kernel, not even using (U)DEV and making a shiny "little" kernel, which does not contains the required DRM drivers.

Long story short, it is clear that his 3D acceleration does not work at all, probably from "power failure" reasons...

Bapun007 · 10-15-2016, 10:41 AM

No sir, The problem was with firefox and chrome , all other applications with 3d acceleration work fine including kde cube effects, and 3d games(counter strike,urban terror, sauerbraten).

@Darth Vader
I use standard slackware14.2 with out any customization , I use fluxbox because i dont want kde eating my system resources while I play games or do some other stupid thing

kdevtmpfs, kswapd0, writeback uses very less cpu/ram so they dont show up on top of top output