[SOLVED] Chromium CPU utilisation 100%+

[simonb]

I’ve got a problem with chromium CPU utilisation. Chromium runs at well over 100% CPU utilisation when using the internal screen.

PRi4b 4Gb ram, 7 inch RPi Touch screen. Latest cut of Moode.


Running the top command with just album art on the screen:

Code:

[color=#000000][size=medium]t[font=Ubuntu Mono]op - 18:26:28 up 5:46, 7 users, load average: 0.31, 0.19, 0.12[/font][/size][/color]
[color=#000000][size=medium][font=Ubuntu Mono]Tasks: 227 total, 1 running, 226 sleeping, 0 stopped, 0 zombie[/font][/size][/color]
[color=#000000][size=medium][font=Ubuntu Mono]%Cpu0 : 3.7 us, 1.0 sy, 0.0 ni, 94.3 id, 0.0 wa, 0.0 hi, 1.0 si, 0.0 st[/font][/size][/color]
[color=#000000][size=medium][font=Ubuntu Mono]%Cpu1 : 4.6 us, 0.3 sy, 0.0 ni, 94.7 id, 0.3 wa, 0.0 hi, 0.0 si, 0.0 st[/font][/size][/color]
[color=#000000][size=medium][font=Ubuntu Mono]%Cpu2 : 4.3 us, 1.0 sy, 0.0 ni, 94.7 id, 0.0 wa, 0.0 hi, 0.0 si, 0.0 st[/font][/size][/color]
[color=#000000][size=medium][font=Ubuntu Mono]%Cpu3 : 3.3 us, 1.0 sy, 0.0 ni, 95.7 id, 0.0 wa, 0.0 hi, 0.0 si, 0.0 st[/font][/size][/color]
[color=#000000][size=medium][font=Ubuntu Mono]MiB Mem : 3792.0 total, 1328.7 free, 1080.1 used, 1515.7 buff/cache[/font][/size][/color]
[color=#000000][size=medium][font=Ubuntu Mono]MiB Swap: 200.0 total, 200.0 free, 0.0 used. 2711.9 avail Mem[/font][/size][/color]

[color=#000000][size=medium][font=Ubuntu Mono]PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND[/font][/size][/color]
[color=#000000][size=medium][font=Ubuntu Mono]13391 mpd 20 0 1269816 457240 33728 S 10.3 11.8 4:31.13 mpd[/font][/size][/color]
[color=#000000][size=medium][font=Ubuntu Mono][b]19221 pi 20 0 195.5g 194524 111820 S 3.3 5.0 4:46.47 chromium[/b][/font][/size][/color]
[color=#000000][size=medium][font=Ubuntu Mono][b]19182 pi 20 0 32.6g 140684 97528 S 1.3 3.6 2:02.38 chromium[/b][/font][/size][/color]
[color=#000000][size=medium][font=Ubuntu Mono]56922 root 20 0 12356 5248 3072 R 0.7 0.1 0:00.50 top[/font][/size][/color]
[color=#000000][size=medium][font=Ubuntu Mono]1366 upmpdcli 20 0 1533604 40276 12160 S 0.3 1.0 0:25.76 upmpdcli[/font][/size][/color]
[color=#000000][size=medium][font=Ubuntu Mono]11250 pi 20 0 12312 5120 3072 S 0.3 0.1 1:21.88 top[/font][/size][/color]
[color=#000000][size=medium][font=Ubuntu Mono]11568 pi 20 0 12312 5120 3072 S 0.3 0.1 1:21.54 top[/font][/size][/color]
[color=#000000][size=medium][font=Ubuntu Mono]12214 pi 20 0 20424 8112 6272 S 0.3 0.2 0:04.41 sshd[/font][/size][/color]
[color=#000000][size=medium][font=Ubuntu Mono]12237 pi 20 0 12312 5248 3072 S 0.3 0.1 1:21.01 top[/font][/size][/color]
[color=#000000][size=medium][font=Ubuntu Mono]19040 root 20 0 315904 84864 58496 S 0.3 2.2 0:14.24 Xorg[/font][/size][/color]
[color=#000000][size=medium][font=Ubuntu Mono][b]19124 pi 20 0 32.8g 245180 198628 S 0.3 6.3 0:23.37 chromium[/b][/font][/size][/color]

With a playlist on the scree:

Code:

[color=#000000][size=medium][font=Ubuntu Mono]top - 18:36:20 up 7 min, 2 users, load average: 1.47, 1.04, 0.51[/font][/size][/color]
[color=#000000][size=medium][font=Ubuntu Mono]Tasks: 207 total, 2 running, 205 sleeping, 0 stopped, 0 zombie[/font][/size][/color]
[color=#000000][size=medium][font=Ubuntu Mono]%Cpu0 : 25.4/7.7 33[||||||||||||||||||||||||||||||||| ][/font][/size][/color]
[color=#000000][size=medium][font=Ubuntu Mono]%Cpu1 : 21.0/9.2 30[|||||||||||||||||||||||||||||| ][/font][/size][/color]
[color=#000000][size=medium][font=Ubuntu Mono]%Cpu2 : 91.6/1.3 93[||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||| ][/font][/size][/color]
[color=#000000][size=medium][font=Ubuntu Mono]%Cpu3 : 18.2/5.7 24[|||||||||||||||||||||||| ][/font][/size][/color]
[color=#000000][size=medium][font=Ubuntu Mono]MiB Mem : 3792.0 total, 2325.3 free, 785.9 used, 816.3 buff/cache[/font][/size][/color]
[color=#000000][size=medium][font=Ubuntu Mono]MiB Swap: 200.0 total, 200.0 free, 0.0 used. 3006.0 avail Mem[/font][/size][/color]

[color=#000000][size=medium][font=Ubuntu Mono]PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND[/font][/size][/color]
[color=#000000][size=medium][font=Ubuntu Mono][b]1743 pi 20 0 195.5g 276256 108596 R 119.2 7.1 3:20.21 chromium[/b][/font][/size][/color]
[color=#000000][size=medium][font=Ubuntu Mono][b]1699 pi 20 0 32.6g 161036 97456 S 30.5 4.1 1:23.50 chromium[/b][/font][/size][/color]
[color=#000000][size=medium][font=Ubuntu Mono]1375 mpd 20 0 832164 93060 33564 S 9.9 2.4 0:32.67 mpd[/font][/size][/color]
[color=#000000][size=medium][font=Ubuntu Mono]1504 root 20 0 315824 83712 57472 S 6.0 2.2 0:16.75 Xorg[/font][/size][/color]
[color=#000000][size=medium][font=Ubuntu Mono][b]1641 pi 20 0 32.8g 282060 196516 S 1.0 7.3 0:09.72 chromium[/b][/font][/size][/color]
[color=#000000][size=medium][font=Ubuntu Mono]307 root -2 0 0 0 0 S 0.7 0.0 0:01.63 v3d_bin[/font][/size][/color]
[color=#000000][size=medium][font=Ubuntu Mono]308 root -2 0 0 0 0 S 0.7 0.0 0:02.01 v3d_render[/font][/size][/color]

Is this normal. It's using far too much resources up.

Simon.

[TheOldPresbyope]

@simonb 

As a matter of forum etiquette, you should be posting code and/or terminal output into a code box (see the scroll-with-plus-sign icon above the edit window. Also, point releases of moOde roll out quite frequently. Terms like "latest cut" are nebulous---today we're at r9.1.2.

As for the CPU usage, I'm away from a player with official RPi 7" touchscreen attached. I seem to recall, though, that the bouncing icon---called "Equalizer(Animator)" in the Now-playing icon menu on the Preferences screen---is quite CPU-intensive with the local display enabled. If you have it on, try selecting the static "Waveform" icon instead.

Just my 2-cents worth.

Regards,
Kent

[simonb]

@simonb 

As a matter of forum etiquette, you should be posting code and/or terminal output into a code box (see the scroll-with-plus-sign icon above the edit window. Also, point releases of moOde roll out quite frequently. Terms like "latest cut" are nebulous---today we're at r9.1.2.

As for the CPU usage, I'm away from a player with official RPi 7" touchscreen attached. I seem to recall, though, that the bouncing icon---called "Equalizer(Animator)" in the Now-playing icon menu on the Preferences screen---is quite CPU-intensive with the local display enabled. If you have it on, try selecting the static "Waveform" icon instead.

Just my 2-cents worth.

Regards,
Kent

I tried the code box as you can see it doesn't format correctly. Latest cut is up to date at the time of posting. I'll try removing the animation and check. Thanks for your reply.

Si

[simonb]

@simonb 

As a matter of forum etiquette, you should be posting code and/or terminal output into a code box (see the scroll-with-plus-sign icon above the edit window. Also, point releases of moOde roll out quite frequently. Terms like "latest cut" are nebulous---today we're at r9.1.2.

As for the CPU usage, I'm away from a player with official RPi 7" touchscreen attached. I seem to recall, though, that the bouncing icon---called "Equalizer(Animator)" in the Now-playing icon menu on the Preferences screen---is quite CPU-intensive with the local display enabled. If you have it on, try selecting the static "Waveform" icon instead.

Just my 2-cents worth.

Regards,
Kent

I can confirm it's made a difference:

Code:

top - 09:35:56 up 25 min,  2 users,  load average: 0.84, 0.58, 0.37
Tasks: 210 total,   1 running, 209 sleeping,   0 stopped,   0 zombie
%Cpu(s): 16.4 us,  2.1 sy,  0.0 ni, 80.8 id,  0.1 wa,  0.0 hi,  0.6 si,  0.0 st
MiB Mem :   3792.0 total,   2145.0 free,    963.2 used,    826.7 buff/cache    
MiB Swap:    200.0 total,    200.0 free,      0.0 used.   2828.7 avail Mem

   PID USER      PR  NI    VIRT    RES    SHR S  %CPU  %MEM     TIME+ COMMAND                    
  1692 pi        20   0  195.6g 433180 122148 S  43.0  11.2   3:22.74 chromium                  
  9741 mpd       20   0  819908  78200  33408 S  10.3   2.0   1:06.28 mpd                        
  1649 pi        20   0   32.6g 146240 103692 S   8.9   3.8   0:42.40 chromium                  
  1541 root      20   0  315828  83712  57344 S   1.3   2.2   0:05.33 Xorg                      
  1591 pi        20   0   32.8g 330252 196596 S   1.3   8.5   0:16.37 chromium    

But having a long list of songs  in the playlist (2046) in this case bumps the cpu utilisation up from 11% to 43% for chromium.  Well within the acceptable limits. Thanks again for your reply Kent.

Si