src: TraceEventScope should mark sync duration events #42977
Closed
Conversation
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
nodejs-github-bot
added
c++
github-actions
bot
removed
the
request-ci
This comment was marked as outdated.
This comment was marked as outdated.
RaisinTen
reviewed
May 7, 2022
RaisinTen
approved these changes
May 8, 2022
RaisinTen
added
the
author ready
|
Not sure if this is the correct fix. They were implemented the way they were so that we can trace how long these various methods take to complete so we can better determine if changes introduce performance regressions. That said, they likely aren't broadly used and everything under trace events is still considered experimental and therefore breaking changes are ok. |
|
The duration events do contain the timestamps on which we can trace how long these methods take to complete, as same as async events. However, synchronous duration events also suggest that these methods are performed in one single thread for a period of time, while async events are not and can be performed intermittently. @jasnell I'm not sure what you mean by "correct fix". Do you suggest that the methods changed in this PR can be performed in different threads for a given unique id or intermittently? |
30 tasks
|
@jasnell would you mind elaborating your suggestion here? This PR has opened for 7 days but I'd still like to know your opinions before landing. Thank you. |
github-actions
bot
removed
the
request-ci
This was referenced May 12, 2022
33 tasks
28 tasks
25 tasks
|
Landed in 7035186 |
legendecas
added a commit
that referenced
this pull request
May 16, 2022
According to the chrome trace event format document, works that are performed on one single thread should be traced with sync duration events. In this way, these events can be grouped under one thread and the trace event viewer can estimate the CPU usage of that thread. PR-URL: #42977 Reviewed-By: Darshan Sen <[email protected]>
This was referenced May 17, 2022
bengl
pushed a commit
that referenced
this pull request
May 30, 2022
According to the chrome trace event format document, works that are performed on one single thread should be traced with sync duration events. In this way, these events can be grouped under one thread and the trace event viewer can estimate the CPU usage of that thread. PR-URL: #42977 Reviewed-By: Darshan Sen <[email protected]>
Merged
juanarbol
pushed a commit
that referenced
this pull request
May 31, 2022
According to the chrome trace event format document, works that are performed on one single thread should be traced with sync duration events. In this way, these events can be grouped under one thread and the trace event viewer can estimate the CPU usage of that thread. PR-URL: #42977 Reviewed-By: Darshan Sen <[email protected]>
danielleadams
pushed a commit
that referenced
this pull request
Jun 27, 2022
According to the chrome trace event format document, works that are performed on one single thread should be traced with sync duration events. In this way, these events can be grouped under one thread and the trace event viewer can estimate the CPU usage of that thread. PR-URL: #42977 Reviewed-By: Darshan Sen <[email protected]>
targos
pushed a commit
that referenced
this pull request
Jul 12, 2022
According to the chrome trace event format document, works that are performed on one single thread should be traced with sync duration events. In this way, these events can be grouped under one thread and the trace event viewer can estimate the CPU usage of that thread. PR-URL: #42977 Reviewed-By: Darshan Sen <[email protected]>
targos
pushed a commit
that referenced
this pull request
Jul 31, 2022
According to the chrome trace event format document, works that are performed on one single thread should be traced with sync duration events. In this way, these events can be grouped under one thread and the trace event viewer can estimate the CPU usage of that thread. PR-URL: #42977 Reviewed-By: Darshan Sen <[email protected]>
guangwong
pushed a commit
to noslate-project/node
that referenced
this pull request
Oct 10, 2022
According to the chrome trace event format document, works that are performed on one single thread should be traced with sync duration events. In this way, these events can be grouped under one thread and the trace event viewer can estimate the CPU usage of that thread. PR-URL: nodejs/node#42977 Reviewed-By: Darshan Sen <[email protected]>
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment
Add this suggestion to a batch that can be applied as a single commit.
This suggestion is invalid because no changes were made to the code.
Suggestions cannot be applied while the pull request is closed.
Suggestions cannot be applied while viewing a subset of changes.
Only one suggestion per line can be applied in a batch.
Add this suggestion to a batch that can be applied as a single commit.
Applying suggestions on deleted lines is not supported.
You must change the existing code in this line in order to create a valid suggestion.
Outdated suggestions cannot be applied.
This suggestion has been applied or marked resolved.
Suggestions cannot be applied from pending reviews.
Suggestions cannot be applied on multi-line comments.
Suggestions cannot be applied while the pull request is queued to merge.
Suggestion cannot be applied right now. Please check back later.
According to the chrome trace event format document, works that are performed on one single thread should be traced with sync duration events. In this way, these events can be grouped under one thread and the trace event viewer can estimate the CPU usage of that thread.
click to see screen shots
Before:
Note that there are no events recorded in the JavaScriptMainThread nor WorkerThread 1.
After:
Environment events like cleanup are correctly grouped under their thread.