[Bug 1576581] Re: New Firefox release hogging CPU

[fermulator]

following the firefox PID
{{{
top - 11:46:42 up 1 day, 13:37,  3 users,  load average: 4.20, 4.02, 4.04
Threads:  64 total,   3 running,  61 sleeping,   0 stopped,   0 zombie
%Cpu(s): 20.5 us,  9.1 sy,  0.0 ni, 64.7 id,  5.6 wa,  0.0 hi,  0.0 si,  0.0 st
KiB Mem : 32777012 total,  4357160 free, 12640692 used, 15779160 buff/cache
KiB Swap:        0 total,        0 free,        0 used. 18872148 avail Mem 

  PID USER      PR  NI    VIRT    RES    SHR S %CPU %MEM     TIME+ COMMAND                                                                                                               
12094 fermula+  20   0 2886256 657056 130136 R 90.3  2.0   6:14.75 DOM Worker            <--- THIS                                                                                                  
11838 fermula+  20   0 2886256 657056 130136 R 50.3  2.0   3:21.63 Timer                                                                                                                 
11819 fermula+  20   0 2886256 657056 130136 R  5.3  2.0   1:33.61 firefox                                                                                                               
11853 fermula+  20   0 2886256 657056 130136 S  0.7  2.0   0:00.77 JS Helper                                                                                                             
11889 fermula+  20   0 2886256 657056 130136 S  0.7  2.0   0:01.42 GLXVsyncThread                                                                                                        
11890 fermula+  20   0 2886256 657056 130136 S  0.7  2.0   0:02.52 GLXVsyncThread                                                                                                        
11844 fermula+  20   0 2886256 657056 130136 S  0.3  2.0   0:00.87 JS Helper                                                                                                             
11848 fermula+  20   0 2886256 657056 130136 S  0.3  2.0   0:00.89 JS Helper                                                                                                             
11850 fermula+  20   0 2886256 657056 130136 S  0.3  2.0   0:00.95 JS Helper                                                                                                             
11880 fermula+  20   0 2886256 657056 130136 S  0.3  2.0   0:04.57 Compositor              
}}}

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Title:
  New Firefox release hogging CPU

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