samples: zperf: Improve TCP performance #94888
Merged
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
For TCP, CONFIG_PICOLIBC_USE_MODULE=y has a significant impact on performance. Use nucleo_h743zi board with loopback: ``` before: tcp upload: 49.35 Mbps/s after: tcp upload: 56.52 Mbps/s ``` Use nucleo_h743zi board, default config: ``` before: tcp upload: 71.3Mbps/s tcp download: 75.11 Mbps/s after: tcp upload: 75.3Mbps/s tcp download: 94.39 Mbps/s ``` Use nucleo_h743zi board, with tx async mode zephyrproject-rtos#93965: ``` before: tcp upload: 71.3Mbps/s tcp download: 75.11 Mbps/s after: tcp upload: 92.9Mbps/s tcp download: 94.5Mbps/s ``` Signed-off-by: WenBin Zhang <[email protected]>
|
pdgendt
approved these changes
Aug 24, 2025
jukkar
approved these changes
Aug 25, 2025
@keith-packard might be able to comment |
|
The results of the experiment. I'm curious too. 🤷 |
|
It's likely to be using the optimized version of various memory functions. Note that SDK 1.0 will provide -O2 and -Os versions of each library, which should avoid this effect. Still, having the option to configure how all of the code is built can make a difference. |
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment
7 participants
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Outdated suggestions cannot be applied.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.
For TCP, CONFIG_PICOLIBC_USE_MODULE=y has a significant impact on performance.
Use nucleo_h743zi board with loopback:
Use nucleo_h743zi board, default config:
Use nucleo_h743zi board, with tx async mode #93965: