On 2020/4/27 16:54, Abby Spurdle wrote:
What's the benchmark?
I don't have any benchmark about this problem.
I (still) have Windows 10 x64.
Opening the task manager, causes the CPU to jump to over 90%.
It will drop to about 0.5% or below very quickly.
In regards to the CPU usage remaining high:
(1) Are you running R in a standard way?
TRUE. I closed all applications, and run the R using Rgui on Windows 10 x64.
(2) If (1) true, is R idle (i.e. waiting for user input)?
TRUE.
(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.
If (1) is false, it's not R's fault.
If (1) is true and (2) is false, then I don't know, that would be interesting...
If (1) and (2) are true and (3) is high, then that would be a bug in R.
If (4) is processes other than R, it's also not R's fault.
But if you provide information, someone here maybe able to offer advise...
Thanks for those suggestions.
Best,
Jinsong
On Mon, Apr 27, 2020 at 7:51 PM Jinsong Zhao <jsz...@yeah.net> wrote:
Hi there,
After calling help.start(), I noticed that CPU loading is up to about
25% (my CPU is core i5 with 4 core). In the out html page, if I click
"Packages", the CPU loading may be up to 75% or much higher. After
closing the browser, the CPU loading does not drop.
If I just use ?plot to open a specific help page, the CPU loading is not
change dramatically. However, if I click the package name (base or
graphics package in this example) in the help page to open the index
page of the corresponding package, then the CPU loading will increase to
more than 75%.
I do not know if this phenomenon could be reproduced... And I do not
know how to trace the detailed information.
Best,
Jinsonng
> sessionInfo()
R version 4.0.0 (2020-04-24)
Platform: x86_64-w64-mingw32/x64 (64-bit)
Running under: Windows 10 x64 (build 18363)
Matrix products: default
locale:
[1] LC_COLLATE=Chinese (Simplified)_China.936
[2] LC_CTYPE=Chinese (Simplified)_China.936
[3] LC_MONETARY=Chinese (Simplified)_China.936
[4] LC_NUMERIC=C
[5] LC_TIME=Chinese (Simplified)_China.936
attached base packages:
[1] stats graphics grDevices utils datasets methods base
loaded via a namespace (and not attached):
[1] compiler_4.0.0 tools_4.0.0
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