consomme: increase default TCP buffer sizes#3010
Merged
jstarks merged 1 commit intomicrosoft:mainfrom Mar 16, 2026
Merged
Conversation
This significantly improves TCP performance, at the cost of some memory. Future changes can be smarter about not using memory for connections that don't need it.
benhillis
approved these changes
Mar 16, 2026
Contributor
There was a problem hiding this comment.
Pull request overview
Increases the default TCP receive/transmit buffer sizing in net_consomme to improve TCP throughput, trading higher memory usage per connection for better performance.
Changes:
- Increase default
ConnectionParamsrx_buffer_sizefrom 16 KiB to 256 KiB. - Increase default
ConnectionParamstx_buffer_sizefrom 16 KiB to 256 KiB.
You can also share your feedback on Copilot code review. Take the survey.
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
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Outdated suggestions cannot be applied.This suggestion has been applied or marked resolved.Suggestions cannot be applied from pending reviews.Suggestions cannot be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.
This significantly improves TCP performance, at the cost of some memory. Future changes can be smarter about not using memory for connections that don't need it.