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docs: example of CPU core pinning
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2 changed files with 42 additions and 1 deletions
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@ -35,7 +35,6 @@ features = [
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"secure-cookies",
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]
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[lib]
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name = "actix_web"
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path = "src/lib.rs"
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@ -130,6 +129,7 @@ awc = { version = "3", features = ["openssl"] }
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brotli = "6"
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const-str = "0.5"
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core_affinity = "0.8"
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criterion = { version = "0.5", features = ["html_reports"] }
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env_logger = "0.11"
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flate2 = "1.0.13"
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41
actix-web/examples/worker-cpu-pin.rs
Normal file
41
actix-web/examples/worker-cpu-pin.rs
Normal file
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@ -0,0 +1,41 @@
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use std::{
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io,
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sync::{
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atomic::{AtomicUsize, Ordering},
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Arc,
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},
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thread,
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};
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use actix_web::{middleware, web, App, HttpServer};
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async fn hello() -> &'static str {
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"Hello world!"
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}
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#[actix_web::main]
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async fn main() -> io::Result<()> {
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env_logger::init_from_env(env_logger::Env::new().default_filter_or("info"));
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let core_ids = core_affinity::get_core_ids().unwrap();
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let n_core_ids = core_ids.len();
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let next_core_id = Arc::new(AtomicUsize::new(0));
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HttpServer::new(move || {
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let pin = Arc::clone(&next_core_id).fetch_add(1, Ordering::AcqRel);
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log::info!(
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"setting CPU affinity for worker {}: pinning to core {}",
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thread::current().name().unwrap(),
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pin,
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);
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core_affinity::set_for_current(core_ids[pin]);
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App::new()
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.wrap(middleware::Logger::default())
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.service(web::resource("/").get(hello))
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})
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.bind(("127.0.0.1", 8080))?
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.workers(n_core_ids)
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.run()
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.await
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}
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