libgit2: dispose connections in SubTransport.Close #775
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
The average SubTransport lifecycle encompass two Actions calls. Previously, it was attempted to share the same connection across both calls. That did not work as some Git Servers do not support multiple sessions from the same connection. The implementation was not fully transitioned into the "one connection per action" model, which led to connection being leaked. The transition to RW mutex was to avoid the unnecessary blocking in the goroutine at the start of the second action call. It is worth mentioning that now when the context is done, the client level resources (connection) will also be freed. This ensures that SSH connections will not outlive the subtransport. Signed-off-by: Paulo Gomes <[email protected]>
|
Testing against IAC the goroutine numbers kept at low (75-100) and healthy levels (as opposed to the previous 1500+): |
|
Hi @pjbgf , |
|
@pjbgf The patched images are working well, thanks. |
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Outdated suggestions cannot be applied.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.
The average SubTransport lifecycle encompass two Actions calls. Previously,
it was attempted to share the same connection across both calls. That did
not work as some Git Servers do not support multiple sessions from the same
connection. The implementation was not fully transitioned into the
"one connection per action" model, which led to connections being leaked.
The transition to RW mutex was to avoid the unnecessary blocking in the
goroutine at the start of the second action call.
It is worth mentioning that now when the context is done, the client level
resources (connection) will also be freed. This ensures that SSH connections
will not outlive the subtransport.
Relates to fluxcd/image-automation-controller#334