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docs: example of CPU core pinning

This commit is contained in:
Rob Ede 2024-06-07 16:57:03 +01:00
parent 534cfe1fda
commit c366649516
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2 changed files with 42 additions and 1 deletions

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@ -35,7 +35,6 @@ features = [
"secure-cookies",
]
[lib]
name = "actix_web"
path = "src/lib.rs"
@ -130,6 +129,7 @@ awc = { version = "3", features = ["openssl"] }
brotli = "6"
const-str = "0.5"
core_affinity = "0.8"
criterion = { version = "0.5", features = ["html_reports"] }
env_logger = "0.11"
flate2 = "1.0.13"

View file

@ -0,0 +1,41 @@
use std::{
io,
sync::{
atomic::{AtomicUsize, Ordering},
Arc,
},
thread,
};
use actix_web::{middleware, web, App, HttpServer};
async fn hello() -> &'static str {
"Hello world!"
}
#[actix_web::main]
async fn main() -> io::Result<()> {
env_logger::init_from_env(env_logger::Env::new().default_filter_or("info"));
let core_ids = core_affinity::get_core_ids().unwrap();
let n_core_ids = core_ids.len();
let next_core_id = Arc::new(AtomicUsize::new(0));
HttpServer::new(move || {
let pin = Arc::clone(&next_core_id).fetch_add(1, Ordering::AcqRel);
log::info!(
"setting CPU affinity for worker {}: pinning to core {}",
thread::current().name().unwrap(),
pin,
);
core_affinity::set_for_current(core_ids[pin]);
App::new()
.wrap(middleware::Logger::default())
.service(web::resource("/").get(hello))
})
.bind(("127.0.0.1", 8080))?
.workers(n_core_ids)
.run()
.await
}