How could I add support for an event modifier in perf

up vote
1
down vote

favorite

I need to account power for the kernel space, but unfortunately the k modifier are not supported for the power/energy-cores/. I have an example of what I'm trying to do below.

I'm reading the source of perf and the structure of the Kernel PMU Events, but I'm a bit lost. Is there someone familiar with the source code of perf who could share some tips of how these modifiers works in the source?

 user@dkphome:~$ sudo perf stat -a -e power/energy-cores/k -I 1000 sleep 5
 # time counts unit events
 1.000099515 <not supported> Joules power/energy-cores/k 
 2.000246523 <not supported> Joules power/energy-cores/k 
 3.000440743 <not supported> Joules power/energy-cores/k 
 4.000673143 <not supported> Joules power/energy-cores/k 
 5.000722624 <not supported> Joules power/energy-cores/k 
 user@dkphome:~$ sudo perf stat -a -e power/energy-cores/ -I 1000 sleep 5
 # time counts unit events
 1.000128209 0,19 Joules power/energy-cores/ 
 2.000257170 0,25 Joules power/energy-cores/ 
 3.000406715 0,26 Joules power/energy-cores/ 
 4.000571140 0,20 Joules power/energy-cores/ 
 5.000711815 1,01 Joules power/energy-cores/ 
 5.000882867 0,00 Joules power/energy-cores/

PS: This other question was a lot of help What are Kernel PMU event-s in perf_events list?

edited Oct 14 '17 at 16:57

asked Oct 14 '17 at 3:26

Leandro Silva

add a commentÂ |Â

up vote
1
down vote

favorite

I need to account power for the kernel space, but unfortunately the k modifier are not supported for the power/energy-cores/. I have an example of what I'm trying to do below.

 user@dkphome:~$ sudo perf stat -a -e power/energy-cores/k -I 1000 sleep 5
 # time counts unit events
 1.000099515 <not supported> Joules power/energy-cores/k 
 2.000246523 <not supported> Joules power/energy-cores/k 
 3.000440743 <not supported> Joules power/energy-cores/k 
 4.000673143 <not supported> Joules power/energy-cores/k 
 5.000722624 <not supported> Joules power/energy-cores/k 
 user@dkphome:~$ sudo perf stat -a -e power/energy-cores/ -I 1000 sleep 5
 # time counts unit events
 1.000128209 0,19 Joules power/energy-cores/ 
 2.000257170 0,25 Joules power/energy-cores/ 
 3.000406715 0,26 Joules power/energy-cores/ 
 4.000571140 0,20 Joules power/energy-cores/ 
 5.000711815 1,01 Joules power/energy-cores/ 
 5.000882867 0,00 Joules power/energy-cores/

PS: This other question was a lot of help What are Kernel PMU event-s in perf_events list?

edited Oct 14 '17 at 16:57

asked Oct 14 '17 at 3:26

Leandro Silva

add a commentÂ |Â

up vote
1
down vote

favorite

I need to account power for the kernel space, but unfortunately the k modifier are not supported for the power/energy-cores/. I have an example of what I'm trying to do below.

 user@dkphome:~$ sudo perf stat -a -e power/energy-cores/k -I 1000 sleep 5
 # time counts unit events
 1.000099515 <not supported> Joules power/energy-cores/k 
 2.000246523 <not supported> Joules power/energy-cores/k 
 3.000440743 <not supported> Joules power/energy-cores/k 
 4.000673143 <not supported> Joules power/energy-cores/k 
 5.000722624 <not supported> Joules power/energy-cores/k 
 user@dkphome:~$ sudo perf stat -a -e power/energy-cores/ -I 1000 sleep 5
 # time counts unit events
 1.000128209 0,19 Joules power/energy-cores/ 
 2.000257170 0,25 Joules power/energy-cores/ 
 3.000406715 0,26 Joules power/energy-cores/ 
 4.000571140 0,20 Joules power/energy-cores/ 
 5.000711815 1,01 Joules power/energy-cores/ 
 5.000882867 0,00 Joules power/energy-cores/

PS: This other question was a lot of help What are Kernel PMU event-s in perf_events list?

edited Oct 14 '17 at 16:57

asked Oct 14 '17 at 3:26

Leandro Silva

I need to account power for the kernel space, but unfortunately the k modifier are not supported for the power/energy-cores/. I have an example of what I'm trying to do below.

 user@dkphome:~$ sudo perf stat -a -e power/energy-cores/k -I 1000 sleep 5
 # time counts unit events
 1.000099515 <not supported> Joules power/energy-cores/k 
 2.000246523 <not supported> Joules power/energy-cores/k 
 3.000440743 <not supported> Joules power/energy-cores/k 
 4.000673143 <not supported> Joules power/energy-cores/k 
 5.000722624 <not supported> Joules power/energy-cores/k 
 user@dkphome:~$ sudo perf stat -a -e power/energy-cores/ -I 1000 sleep 5
 # time counts unit events
 1.000128209 0,19 Joules power/energy-cores/ 
 2.000257170 0,25 Joules power/energy-cores/ 
 3.000406715 0,26 Joules power/energy-cores/ 
 4.000571140 0,20 Joules power/energy-cores/ 
 5.000711815 1,01 Joules power/energy-cores/ 
 5.000882867 0,00 Joules power/energy-cores/

PS: This other question was a lot of help What are Kernel PMU event-s in perf_events list?

edited Oct 14 '17 at 16:57

asked Oct 14 '17 at 3:26

Leandro Silva

edited Oct 14 '17 at 16:57

asked Oct 14 '17 at 3:26

Leandro Silva

asked Oct 14 '17 at 3:26

Leandro Silva

asked Oct 14 '17 at 3:26

Leandro Silva

add a commentÂ |Â

active

oldest

votes

Your Answer

StackExchange.ready(function()
var channelOptions =
tags: "".split(" "),
id: "106"
;
initTagRenderer("".split(" "), "".split(" "), channelOptions);

StackExchange.using("externalEditor", function()
// Have to fire editor after snippets, if snippets enabled
if (StackExchange.settings.snippets.snippetsEnabled)
StackExchange.using("snippets", function()
createEditor();
);

else
createEditor();

);

function createEditor()
StackExchange.prepareEditor(
heartbeatType: 'answer',
convertImagesToLinks: false,
noModals: false,
showLowRepImageUploadWarning: true,
reputationToPostImages: null,
bindNavPrevention: true,
postfix: "",
onDemand: true,
discardSelector: ".discard-answer"
,immediatelyShowMarkdownHelp:true
);

);

draft saved

draft discarded

StackExchange.ready(
function ()
StackExchange.openid.initPostLogin('.new-post-login', 'https%3a%2f%2funix.stackexchange.com%2fquestions%2f398055%2fhow-could-i-add-support-for-an-event-modifier-in-perf%23new-answer', 'question_page');

);

Post as a guest

Name

active

oldest

votes

draft saved

draft discarded

draft saved

draft discarded

Post as a guest

Name

搜尋此網誌

mjhjmtu