Update analysis insights table #33078
Open
+29
−14
Conversation
This file contains hidden or 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
Contributor
Preview links (active after the
|
janine-c
reviewed
Nov 27, 2025
Contributor
janine-c
left a comment
janine-c
left a comment
There was a problem hiding this comment.
Thanks so much for this, Henrik! I made some suggestions for readability and consistency. Take a look and feel free to take them or leave them as you see fit.
One thing I was wondering is whether you thought the table might be a little easier to navigate if we sorted them alphabetically by name within each priority group. If you'd like help with that, let me know; I have an extension I can do it with quickly 🙂
| | GC Setup | Medium | Java | Triggers when one of the following is detected - serial GC used on a multi-core machine, parallel GC on a single-core machine, more GC threads were configured than available cores, or a parallel GC was configured to run in 1 thread | | ||
| | Deadlocked Threads Detected | Medium | Java | Triggers if max number of deadlocked threads over query context is bigger than 0. | | ||
| | GC Pauses | Medium | Java | Triggers if more than 10% of time was spent in GC pauses. | | ||
| | GC Pause Peak Duration | Medium | Java | Triggers if there is a GC pause longer than 1 second. | |
Contributor
There was a problem hiding this comment.
Suggested change
| | GC Pause Peak Duration | Medium | Java | Triggers if there is a GC pause longer than 1 second. | |
I think this was a duplicate of line 72
| |------------------------------|------------|-------------------------|-------------| | ||
| | Virtual Thread Pinning | High | Java | Triggers if virtual threads were pinned to their carrier threads for a prolonged time. | | ||
| | Virtual Thread Submit Failure| High | Java | Triggers if virtual threads could not be scheduled for execution. | | ||
| | Even Loop Blocking | Medium | Node | Triggers if callbacks were running for an extended period of time on the Main Event Loop thread. | |
Contributor
There was a problem hiding this comment.
Suggested change
| | Even Loop Blocking | Medium | Node | Triggers if callbacks were running for an extended period of time on the Main Event Loop thread. | | |
| | Event Loop Blocking | Medium | Node | Triggers if callbacks were running for an extended period of time on the Main Event Loop thread. | |
| | Even Loop Blocking | Medium | Node | Triggers if callbacks were running for an extended period of time on the Main Event Loop thread. | | ||
| | Sync-over-Async Blocking | Medium | .NET | Triggers if async functions are detected in CPU samples. | | ||
| | Allocation Stall | Medium | Java | Triggers if a thread had to be paused due to insufficient available memory. | | ||
| | Explicit GC | Medium | Java | Triggers if there are System.gc() calls. | |
Contributor
There was a problem hiding this comment.
Suggested change
| | Explicit GC | Medium | Java | Triggers if there are System.gc() calls. | | |
| | Explicit GC | Medium | Java | Triggers if there are `System.gc()` calls. | |
| | Allocation Stall | Medium | Java | Triggers if a thread had to be paused due to insufficient available memory. | | ||
| | Explicit GC | Medium | Java | Triggers if there are System.gc() calls. | | ||
| | GC Pause Peak Duration | Medium | Java | Triggers if at least one GC pause took more than 1 second. | | ||
| | GC Setup | Medium | Java | Triggers when one of the following is detected - serial GC used on a multi-core machine, parallel GC on a single-core machine, more GC threads were configured than available cores, or a parallel GC was configured to run in 1 thread | |
Contributor
There was a problem hiding this comment.
Suggested change
| | GC Setup | Medium | Java | Triggers when one of the following is detected - serial GC used on a multi-core machine, parallel GC on a single-core machine, more GC threads were configured than available cores, or a parallel GC was configured to run in 1 thread | | |
| | GC Setup | Medium | Java | Triggers when one of the following is detected: serial GC used on a multi-core machine, parallel GC on a single-core machine, more GC threads configured than available cores, or parallel GC configured to run in one thread. | |
| | Sync-over-Async Blocking | Medium | .NET | Triggers if async functions are detected in CPU samples. | | ||
| | Allocation Stall | Medium | Java | Triggers if a thread had to be paused due to insufficient available memory. | | ||
| | Explicit GC | Medium | Java | Triggers if there are System.gc() calls. | | ||
| | GC Pause Peak Duration | Medium | Java | Triggers if at least one GC pause took more than 1 second. | |
Contributor
There was a problem hiding this comment.
Suggested change
| | GC Pause Peak Duration | Medium | Java | Triggers if at least one GC pause took more than 1 second. | | |
| | GC Pause Peak Duration | Medium | Java | Triggers if at least one GC pause took more than one second. | |
| | Stackdepth Setting | Medium | Java | Triggers if events were found with truncated stacktraces which may make it hard to understand profiling data. | | ||
| | Thrown Exceptions | Medium | Java | Triggers when the rate of thrown (caught and uncaught) exceptions per minute goes above a threshold (defaults to 10K) | | ||
| | VMOperation Peak Duration | Medium | Java | Triggers if a blocking VM operation (or combination of operations close in time) takes more than 2 seconds. Reports details about the operation with the highest duration. | | ||
| | Blocking VMOperations | Medium | Java | Triggers if blocking VM operations (or combination of operations close in time) takes more than 5% of a profile. | |
Contributor
There was a problem hiding this comment.
Suggested change
| | Blocking VMOperations | Medium | Java | Triggers if blocking VM operations (or combination of operations close in time) takes more than 5% of a profile. | | |
| | Blocking VMOperations | Medium | Java | Triggers if blocking VM operations (or combination of operations close in time) take more than 5% of a profile. | |
| | VMOperation Peak Duration | Medium | Java | Triggers if a blocking VM operation (or combination of operations close in time) takes more than 2 seconds. Reports details about the operation with the highest duration. | | ||
| | Blocking VMOperations | Medium | Java | Triggers if blocking VM operations (or combination of operations close in time) takes more than 5% of a profile. | | ||
| | Code Cache Size | Medium | Java | Triggers if the Code Cache was filled during a profile. | | ||
| | High Lock Contention | Low | Java, Go, Python | Triggers if there is a high ratio of time waiting on locks vs time spent on-CPU. | |
Contributor
There was a problem hiding this comment.
Suggested change
| | High Lock Contention | Low | Java, Go, Python | Triggers if there is a high ratio of time waiting on locks vs time spent on-CPU. | | |
| | High Lock Contention | Low | Java, Go, Python | Triggers if there is a high ratio of time waiting on locks to time spent on-CPU. | |
| | High Lock Contention | Low | Java, Go, Python | Triggers if there is a high ratio of time waiting on locks vs time spent on-CPU. | | ||
| | Libuv Pool Overload | Low | Node | Triggers if there were more concurrent tasks scheduled to run on the libuv thread pool than it has threads. | | ||
| | Excessive String Concatenation | Low | .NET | Triggers if there is a high ratio of CPU time spent concatenating strings. | | ||
| | Thread Pool Size | Low | Java | Triggers if a thread pool is CPU bound but is set to a size larger than the number of available cores. | |
Contributor
There was a problem hiding this comment.
Suggested change
| | Thread Pool Size | Low | Java | Triggers if a thread pool is CPU bound but is set to a size larger than the number of available cores. | | |
| | Thread Pool Size | Low | Java | Triggers if a thread pool is CPU-bound but is set to a size larger than the number of available cores. | |
| | Excessive String Concatenation | Low | .NET | Triggers if there is a high ratio of CPU time spent concatenating strings. | | ||
| | Thread Pool Size | Low | Java | Triggers if a thread pool is CPU bound but is set to a size larger than the number of available cores. | | ||
| | Head of line blocking | Low | Java | Triggers if a queue event gets stuck behind the given activity. | | ||
| | Primitive Value Boxing | Low | Java | Triggers if more than 5% of CPU time was spent doing primitive<>object value conversions. | |
Contributor
There was a problem hiding this comment.
Suggested change
| | Primitive Value Boxing | Low | Java | Triggers if more than 5% of CPU time was spent doing primitive<>object value conversions. | | |
| | Primitive Value Boxing | Low | Java | Triggers if more than 5% of CPU time was spent converting values between primitive and object values. | |
| | Head of line blocking | Low | Java | Triggers if a queue event gets stuck behind the given activity. | | ||
| | Primitive Value Boxing | Low | Java | Triggers if more than 5% of CPU time was spent doing primitive<>object value conversions. | | ||
| | Duplicated Flags | Low | Java | Triggers if duplicate flags were provided to the runtime (for example, `-Xmx2g -Xmx5g`). This is a problem as it may lead to changes not having the expected effect. | | ||
| | Command Line Options Check | Low | Java | Triggers if undocumented, deprecated or non-recommended option flags were detected. | |
Contributor
There was a problem hiding this comment.
Suggested change
| | Command Line Options Check | Low | Java | Triggers if undocumented, deprecated or non-recommended option flags were detected. | | |
| | Command Line Options Check | Low | Java | Triggers if undocumented, deprecated, or non-recommended option flags were detected. | |
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.
What does this PR do? What is the motivation?
Updates the table of insights in the docs for the automated analysis feature with all insights currently implemented.
Merge instructions
Merge readiness:
For Datadog employees:
Your branch name MUST follow the
<name>/<description>convention and include the forward slash (/). Without this format, your pull request will not pass CI, the GitLab pipeline will not run, and you won't get a branch preview. Getting a branch preview makes it easier for us to check any issues with your PR, such as broken links.If your branch doesn't follow this format, rename it or create a new branch and PR.
[6/5/2025] Merge queue has been disabled on the documentation repo. If you have write access to the repo, the PR has been reviewed by a Documentation team member, and all of the required checks have passed, you can use the Squash and Merge button to merge the PR. If you don't have write access, or you need help, reach out in the #documentation channel in Slack.
Additional notes