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Last active January 11, 2018 20:51
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Powerstat on Lenovo X1 Carbon gen5, Arch Linux, Gnome, Wayland - Firefox usage w/ and w/o WebRender (2018-01-11)
Raw
Description
This is a pretty unscientific study. I just had a browser with ~12 tabs open, including 3x gmail, slack, facebook, telegram, irccloud and a bunch of more static pages.
I placed Firefox window on half of my screen and terminal on the other. Selected the last tab (google results) and waited ~2 minutes,
until CPU was low.
Then I turned on powerstat, waited for 8 samples with Fx window not in focus, then started scrolling through each tab one after another.
I did this for about ~1min and then waited one more minute with Firefox not in focus (back on google search results).
Then I restarted the browser with WebRender on and performed the same procedure.
Raw
WebRender off
Time User Nice Sys Idle IO Run Ctxt/s IRQ/s Fork Exec Exit Watts CPU Freq GPU W
12:39:19 0.8 3.1 1.5 94.5 0.2 1 3526 478 0 0 0 5.50 0.99 GHz 0.02
12:39:29 1.3 3.4 1.8 93.2 0.3 1 3894 526 1 0 1 5.51 1.20 GHz 0.03
12:39:39 1.3 3.1 1.5 93.8 0.2 1 3540 471 5 0 4 5.50 0.97 GHz 0.03
12:39:49 1.3 3.3 2.2 93.0 0.3 1 3822 542 2 0 2 5.49 0.91 GHz 0.03
12:39:59 1.3 3.4 2.1 93.1 0.2 2 3866 581 2 0 2 5.49 1.06 GHz 0.03
12:40:09 1.3 3.1 2.1 93.3 0.2 1 3546 512 4 0 4 5.47 0.90 GHz 0.03
12:40:19 1.4 3.0 2.2 93.2 0.2 1 3543 501 0 0 0 5.47 0.95 GHz 0.03
12:40:29 1.2 3.5 2.0 93.0 0.3 2 3883 536 1 0 1 5.47 0.97 GHz 0.03
12:40:39 5.1 11.8 4.6 78.2 0.2 5 7797 1582 12 0 8 5.67 3.79 GHz 0.12
12:40:49 4.2 12.1 4.0 79.4 0.2 1 6880 1443 0 0 1 5.97 0.79 GHz 0.16
12:40:59 4.2 14.7 3.7 77.2 0.2 2 6832 1680 6 0 3 6.15 3.66 GHz 0.10
12:41:09 2.7 15.0 3.1 78.9 0.3 1 7309 1981 4 0 4 6.53 0.90 GHz 0.08
12:41:19 2.6 17.9 3.8 75.3 0.3 6 6922 3738 7 0 7 6.82 2.53 GHz 0.11
12:41:29 2.5 25.1 4.2 67.8 0.3 6 11048 4652 2 0 3 7.88 3.86 GHz 0.08
12:41:39 3.7 23.3 4.3 68.5 0.3 3 9282 5499 2 0 4 8.61 1.52 GHz 0.16
12:41:49 2.9 6.5 3.0 87.2 0.4 1 4257 1339 4 0 2 8.40 0.90 GHz 0.07
12:41:59 1.6 5.2 2.0 91.0 0.3 1 3993 967 4 0 4 8.03 0.94 GHz 0.04
12:42:09 1.7 4.6 2.2 91.2 0.4 1 3613 684 4 0 3 7.73 1.05 GHz 0.03
12:42:19 1.1 5.1 2.1 91.4 0.3 1 3722 1295 2 0 3 7.43 1.20 GHz 0.03
12:42:29 0.8 4.9 1.9 92.1 0.3 1 3404 1151 0 0 1 7.18 1.08 GHz 0.03
12:42:39 2.6 4.9 2.2 90.1 0.3 1 4328 1506 2 0 4 7.03 0.90 GHz 0.05
12:42:49 1.5 4.0 2.2 92.0 0.3 1 3554 745 3 0 1 6.84 0.92 GHz 0.03
-------- ----- ----- ----- ----- ----- ---- ------ ------ ---- ---- ---- ------ --------- ------
Average 2.1 8.2 2.7 86.7 0.3 1.9 5116.4 1473.2 3.0 0.0 2.8 6.55 1.45 GHz 0.06
GeoMean 1.9 6.2 2.5 86.3 0.2 1.5 4757.1 1080.8 0.0 0.0 0.0 6.47 1.25 GHz 0.05
StdDev 1.2 6.7 1.0 8.5 0.1 1.6 2155.9 1358.8 2.7 0.0 2.0 1.06 0.99 GHz 0.04
-------- ----- ----- ----- ----- ----- ---- ------ ------ ---- ---- ---- ------ --------- ------
Minimum 0.8 3.0 1.5 67.8 0.2 1.0 3404.5 470.8 0.0 0.0 0.0 5.47 0.79 GHz 0.02
Maximum 5.1 25.1 4.6 94.5 0.4 6.0 11048.5 5498.9 12.0 0.0 8.0 8.61 3.86 GHz 0.16
-------- ----- ----- ----- ----- ----- ---- ------ ------ ---- ---- ---- ------ --------- ------
Summary:
System: 6.55 Watts on average with standard deviation 1.06
GPU: 0.06 Watts on average with standard deviation 0.04
C-State Resident Count Latency
C10 15.292% 30105 890
C9 0.003% 32 480
C8 52.800% 234404 200
C7s 0.042% 286 124
C6 11.304% 131345 85
C3 0.734% 18459 70
C1E 1.324% 28110 10
C1 4.490% 77173 2
POLL 0.003% 135 0
C0 14.009%
Raw
WebRender on
cintra# powerstat -c -f -g
Running for 300.0 seconds (30 samples at 10.0 second intervals).
Power measurements will start in 180 seconds time.
Time User Nice Sys Idle IO Run Ctxt/s IRQ/s Fork Exec Exit Watts CPU Freq GPU W
12:28:03 2.4 3.5 2.7 91.3 0.2 1 3911 1169 4 0 3 5.74 1.05 GHz 0.03
12:28:13 2.3 3.6 2.8 90.8 0.4 4 3639 1000 1 0 0 5.75 1.04 GHz 0.03
12:28:23 2.5 3.4 2.6 91.2 0.3 2 4072 1022 4 0 5 5.77 0.81 GHz 0.03
12:28:33 2.6 3.7 3.3 90.1 0.3 2 4229 1096 4 0 3 5.77 0.90 GHz 0.03
12:28:43 2.3 3.7 2.8 90.8 0.4 1 4085 1070 3 0 2 5.76 0.90 GHz 0.03
12:28:53 2.2 3.0 2.9 91.5 0.3 1 3940 991 0 0 1 5.80 0.90 GHz 0.03
12:29:03 2.7 2.9 2.7 91.4 0.4 1 3782 990 5 0 6 5.81 0.90 GHz 0.03
12:29:13 4.0 7.1 4.1 84.5 0.3 1 6338 1782 4 0 1 5.90 0.80 GHz 0.09
12:29:23 4.7 13.3 5.7 75.9 0.3 1 9046 2482 0 0 0 6.21 1.41 GHz 0.22
12:29:33 4.2 15.7 6.2 73.7 0.2 3 10393 2765 3 0 1 6.63 0.89 GHz 0.26
12:29:43 4.4 21.4 6.1 67.8 0.3 3 10515 3228 2 0 3 7.04 0.94 GHz 0.36
12:29:53 3.8 26.4 6.5 63.0 0.2 1 12957 3989 11 0 10 7.64 2.71 GHz 0.38
12:30:03 3.3 22.9 5.3 68.4 0.2 3 10595 4632 3 0 4 7.91 0.93 GHz 0.37
12:30:13 2.7 22.3 5.3 69.5 0.3 1 9668 4494 0 0 1 8.87 0.97 GHz 0.41
12:30:23 2.6 4.0 3.5 89.7 0.3 1 4064 1265 2 0 4 8.43 0.97 GHz 0.04
12:30:33 2.2 7.7 3.2 86.6 0.4 1 4669 2704 1 0 0 8.22 0.90 GHz 0.03
12:30:43 2.2 6.0 3.4 88.1 0.3 1 4245 1552 2 0 3 7.93 0.96 GHz 0.03
12:30:53 2.5 4.1 3.1 90.1 0.3 1 4042 1106 0 0 1 7.59 0.90 GHz 0.03
12:31:03 2.5 3.9 3.1 90.2 0.3 2 4070 1137 3 0 3 7.32 0.95 GHz 0.03
12:31:13 2.6 3.8 3.1 90.2 0.4 2 4095 1144 1 0 1 7.13 0.90 GHz 0.03
12:31:23 2.7 3.1 2.8 91.1 0.2 1 4005 1005 0 0 0 6.90 0.90 GHz 0.03
^[c-------- ----- ----- ----- ----- ----- ---- ------ ------ ---- ---- ---- ------ --------- ------
Average 2.9 8.8 3.9 84.1 0.3 1.6 6017.2 1934.4 2.5 0.0 2.5 6.86 1.03 GHz 0.12
GeoMean 2.8 6.4 3.7 83.5 0.3 1.4 5430.0 1644.9 0.0 0.0 0.0 6.79 0.99 GHz 0.07
StdDev 0.8 7.7 1.3 9.5 0.1 0.9 2971.5 1200.3 2.5 0.0 2.4 1.02 0.39 GHz 0.14
-------- ----- ----- ----- ----- ----- ---- ------ ------ ---- ---- ---- ------ --------- ------
Minimum 2.2 2.9 2.6 63.0 0.2 1.0 3639.2 989.8 0.0 0.0 0.0 5.74 0.80 GHz 0.03
Maximum 4.7 26.4 6.5 91.5 0.4 4.0 12956.9 4631.6 11.0 0.0 10.0 8.87 2.71 GHz 0.41
-------- ----- ----- ----- ----- ----- ---- ------ ------ ---- ---- ---- ------ --------- ------
Summary:
System: 6.86 Watts on average with standard deviation 1.02
GPU: 0.12 Watts on average with standard deviation 0.14
C-State Resident Count Latency
C10 10.865% 24232 890
C9 0.007% 28 480
C8 55.666% 246651 200
C7s 0.047% 329 124
C6 11.529% 152833 85
C3 1.000% 30841 70
C1E 1.318% 37235 10
C1 2.548% 59589 2
POLL 0.003% 274 0
C0 17.019%
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