On 2020/4/28 3:40, Abby Spurdle wrote:
(3) If (2) true, how much CPU is R using?
0%.
(4) If (3) is zero, what processes are using the CPU the most?
In such case, almost every processes is using the CPU in a very low
percentage, i.e., 1% or below. I don't recognized those processes.
Now, I invoke help.start(), about 25% of CPU loading is used by R. Quit
from R, the CPU loading go back to idle.
Is R using 0% or 25%?
Again, if R was using 25% while showing the prompt and waiting for
user input, that would be a bug in R.
25% CPU is used by R. And R shows the prompt and waits for user input.
Here is a report of the CPU usage by Rgui from Windows command line:
C:\Users\Jinso>typeperf "\Process(Rgui)\% Processor Time" -si 5
....
"04/28/2020 13:31:05.895","-1"
"04/28/2020 13:31:10.915","0.622494"
"04/28/2020 13:31:15.925","0.000000"
"04/28/2020 13:31:20.935","0.000000"
"04/28/2020 13:31:25.945","0.000000"
"04/28/2020 13:31:30.965","2.801177"
"04/28/2020 13:31:35.975","37.418638"
"04/28/2020 13:31:40.982","100.159072"
"04/28/2020 13:31:45.987","99.887614"
"04/28/2020 13:31:50.992","99.899896"
"04/28/2020 13:31:55.999","119.270784"
"04/28/2020 13:32:01.002","299.014789"
"04/28/2020 13:32:06.007","299.666184"
"04/28/2020 13:32:11.015","294.905707"
"04/28/2020 13:32:16.019","299.755921"
"04/28/2020 13:32:21.025","299.924392"
"04/28/2020 13:32:26.030","296.594191"
"04/28/2020 13:32:31.048","298.195791"
"04/28/2020 13:32:36.054","292.362986"
"04/28/2020 13:32:41.064","292.503832"
"04/28/2020 13:32:46.068","301.650976"
...
...
At about 10", I start Rgui, the CPU usage is about 0.5~1% (The second
column number may be divided by 4).
At about 35", I call help.start() from menu of Rgui, you may notice that
CPU usage increased to about 25%.
At about 55", I click on the ``Packages'' link in the browser. The CPU
usage increased to about 70-75%, and closing browser does not have any
effects on the CPU usage of R.
Or do you mean R is using 0% and total CPU usage *temporarily*
increases 25% *while* R is running?
If so, this could be the result of some security feature...? not sure
because this is outside my area...
I just found the following feature.
If you open powershell, one can run: ps | sort -desc cpu
This could be used if you want to show people what's happening.
PS C:\Users\spurdle> ps | sort -desc cpu
Handles NPM(K) PM(K) WS(K) CPU(s) Id SI ProcessName
------- ------ ----- ----- ------ -- -- -----------
625 28 108940 111644 4,900.52 8176 0 audiodg
794 38 234888 177924 62.13 8652 19 chrome
1673 71 84372 147628 61.97 10304 19 chrome
330 25 100096 146968 55.80 1052 19 chrome
391 26 141928 181264 35.27 6884 19 chrome
291 20 46676 80472 15.25 5352 19 chrome
2351 79 58404 107276 13.33 6940 19 explorer
443 22 17916 34764 12.17 7196 19 chrome
1331 90 107628 87596 10.86 9432 19 SearchUI
671 41 56184 70320 9.94 10420 19 powershell
362 24 51984 91568 9.06 4360 19 chrome
1129 107 206988 31852 7.17 6740 19 SkypeApp
696 40 26764 45620 5.33 4348 19
Lenovo.Modern.ImController.PluginHost.Device
256 20 56860 84372 5.17 1660 19 chrome
284 18 34532 62112 5.13 1212 19 chrome
291 19 7048 16360 4.30 1476 19 chrome
Diverging, I can't figure out how to permanently stop Lenovo and Skype
processes, or why chrome (and edge) need so many copies of
themselves...
Anyway, the plan is to shift to Debian or OpenIndianna, and run
ReactOS via virtualization...
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