perf: avoid multiple calls to runMicrotask #26378
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
bartlomieju
pushed a commit
that referenced
this pull request
Oct 25, 2024
Improves HTTP throughput by 8-9k rps on Linux: this patch ``` Requests/sec: 145001.69 Transfer/sec: 20.74MB ``` main ``` Requests/sec: 137866.61 Transfer/sec: 19.72MB ``` The improvements comes from the reduced number of calls to `op_run_microtask` per request. Returning `true` from a macrotask callback already calls `op_run_microtask` so the extra call was redundant. Here's `--strace-ops` output for a single request: main ``` [ 4.667] op_http_wait : CompletedAsync Async [ 4.667] op_run_microtasks : Dispatched Slow [ 4.668] op_http_try_wait : Dispatched Slow [ 4.668] op_http_try_wait : Completed Slow [ 4.668] op_http_wait : Dispatched Async [ 4.668] op_http_set_response_header : Dispatched Slow [ 4.668] op_http_set_response_header : Completed Slow [ 4.669] op_http_set_response_body_text : Dispatched Slow [ 4.669] op_http_set_response_body_text : Completed Slow [ 4.669] op_run_microtasks : Completed Slow [ 4.669] op_has_tick_scheduled : Dispatched Slow [ 4.669] op_has_tick_scheduled : Completed Slow [ 4.669] op_run_microtasks : Dispatched Slow [ 4.669] op_run_microtasks : Completed Slow [ 4.669] op_run_microtasks : Dispatched Slow [ 4.669] op_run_microtasks : Completed Slow ``` this pr ``` [ 3.726] op_http_wait : CompletedAsync Async [ 3.727] op_run_microtasks : Dispatched Slow [ 3.727] op_http_try_wait : Dispatched Slow [ 3.727] op_http_try_wait : Completed Slow [ 3.727] op_http_wait : Dispatched Async [ 3.727] op_http_set_response_header : Dispatched Slow [ 3.728] op_http_set_response_header : Completed Slow [ 3.728] op_http_set_response_body_text : Dispatched Slow [ 3.728] op_http_set_response_body_text : Completed Slow [ 3.728] op_run_microtasks : Completed Slow [ 3.728] op_run_microtasks : Dispatched Slow [ 3.728] op_run_microtasks : Completed Slow ```
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.
Improves HTTP throughput by 8-9k rps on Linux:
this patch
main
The improvements comes from the reduced number of calls to
op_run_microtaskper request. Returningtruefrom a macrotask callback already callsop_run_microtaskso the extra call was redundant.Here's
--strace-opsoutput for a single request:main
this pr