From 9845361153f35f6a68a82eb3a13845fddbeab026 Mon Sep 17 00:00:00 2001 From: Matt Mastracci Date: Sun, 14 May 2023 15:40:01 -0600 Subject: refactor(core): bake single-thread assumptions into spawn/spawn_blocking (#19056) MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Partially supersedes #19016. This migrates `spawn` and `spawn_blocking` to `deno_core`, and removes the requirement for `spawn` tasks to be `Send` given our single-threaded executor. While we don't need to technically do anything w/`spawn_blocking`, this allows us to have a single `JoinHandle` type that works for both cases, and allows us to more easily experiment with alternative `spawn_blocking` implementations that do not require tokio (ie: rayon). Async ops (+~35%): Before: ``` time 1310 ms rate 763358 time 1267 ms rate 789265 time 1259 ms rate 794281 time 1266 ms rate 789889 ``` After: ``` time 956 ms rate 1046025 time 954 ms rate 1048218 time 924 ms rate 1082251 time 920 ms rate 1086956 ``` HTTP serve (+~4.4%): Before: ``` Running 10s test @ http://localhost:4500 2 threads and 10 connections Thread Stats Avg Stdev Max +/- Stdev Latency 68.78us 19.77us 1.43ms 86.84% Req/Sec 68.78k 5.00k 73.84k 91.58% 1381833 requests in 10.10s, 167.36MB read Requests/sec: 136823.29 Transfer/sec: 16.57MB ``` After: ``` Running 10s test @ http://localhost:4500 2 threads and 10 connections Thread Stats Avg Stdev Max +/- Stdev Latency 63.12us 17.43us 1.11ms 85.13% Req/Sec 71.82k 3.71k 77.02k 79.21% 1443195 requests in 10.10s, 174.79MB read Requests/sec: 142921.99 Transfer/sec: 17.31MB ``` Suggested-By: alice@ryhl.io Co-authored-by: Bartek Iwańczuk --- ext/io/lib.rs | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-) (limited to 'ext/io') diff --git a/ext/io/lib.rs b/ext/io/lib.rs index 49e4ab714..6dec7c3a7 100644 --- a/ext/io/lib.rs +++ b/ext/io/lib.rs @@ -2,6 +2,7 @@ use deno_core::error::AnyError; use deno_core::op; +use deno_core::task::spawn_blocking; use deno_core::AsyncMutFuture; use deno_core::AsyncRefCell; use deno_core::AsyncResult; @@ -350,7 +351,7 @@ impl StdFileResourceInner { } } }; - let (cell_value, result) = tokio::task::spawn_blocking(move || { + let (cell_value, result) = spawn_blocking(move || { let result = action(&mut cell_value); (cell_value, result) }) @@ -372,7 +373,7 @@ impl StdFileResourceInner { // we want to restrict this to one async action at a time let _permit = self.cell_async_task_queue.acquire().await; - tokio::task::spawn_blocking(action).await.unwrap() + spawn_blocking(action).await.unwrap() } } -- cgit v1.2.3