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add LIFO scheduling for database frontend pool workers

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Signed-off-by: Jason Volk <jason@zemos.net>
This commit is contained in:
Jason Volk 2024-12-25 06:17:18 +00:00 • committed by strawberry
parent 6458f4b195
commit 74eb30c106
3 changed files with 17 additions and 6 deletions
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6
Cargo.lock generated
View file

@ -95,8 +95,7 @@ checksum = "5f093eed78becd229346bf859eec0aa4dd7ddde0757287b2b4107a1f09c80002"
[[package]]
name = "async-channel"
version = "2.3.1"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "89b47800b0be77592da0afd425cc03468052844aff33b84e33cc696f64e77b6a"
source = "git+https://github.com/jevolk/async-channel?rev=fefa543ca5eddf21237d75776fce98b7e09e924a#fefa543ca5eddf21237d75776fce98b7e09e924a"
dependencies = [
"concurrent-queue",
"event-listener-strategy",
@ -1259,8 +1258,7 @@ dependencies = [
[[package]]
name = "event-listener"
version = "5.3.1"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "6032be9bd27023a771701cc49f9f053c751055f71efb2e0ae5c15809093675ba"
source = "git+https://github.com/jevolk/event-listener?rev=96d7e0fc026d8f708b19bc9267a382676a50354c#96d7e0fc026d8f708b19bc9267a382676a50354c"
dependencies = [
"concurrent-queue",
"parking",

8
Cargo.toml
View file

@ -529,6 +529,14 @@ rev = "ccc4fbd8238c2d5ba354e61ec17ac610af11401d"
git = "https://github.com/girlbossceo/rustyline-async"
rev = "deaeb0694e2083f53d363b648da06e10fc13900c"
# adds LIFO queue scheduling; this should be updated with PR progress.
[patch.crates-io.event-listener]
git = "https://github.com/jevolk/event-listener"
rev = "96d7e0fc026d8f708b19bc9267a382676a50354c"
[patch.crates-io.async-channel]
git = "https://github.com/jevolk/async-channel"
rev = "fefa543ca5eddf21237d75776fce98b7e09e924a"
#
# Our crates
#

9
src/database/pool.rs
View file

@ -8,7 +8,7 @@ use std::{
},
};
use async_channel::{Receiver, RecvError, Sender};
use async_channel::{Receiver, RecvError, Sched, Sender};
use conduwuit::{
debug, debug_warn, defer, err, implement,
result::DebugInspect,
@ -65,9 +65,14 @@ const QUEUE_LIMIT: (usize, usize) = (1, 2048);
#[implement(Pool)]
pub(crate) async fn new(server: &Arc<Server>) -> Result<Arc<Self>> {
const CHAN_SCHED: (Sched, Sched) = (Sched::Fifo, Sched::Lifo);
let (total_workers, queue_sizes, topology) = configure(server);
let (senders, receivers) = queue_sizes.into_iter().map(async_channel::bounded).unzip();
let (senders, receivers) = queue_sizes
.into_iter()
.map(|cap| async_channel::bounded_with_sched(cap, CHAN_SCHED))
.unzip();
let pool = Arc::new(Self {
server: server.clone(),