Use jemalloc

Cargo.toml

@@ -60,6 +60,7 @@ prometheus = "0.13.3"
 lazy_static = "1.4.0"
 dotenv = "0.15.0"
 async-channel = "1.8.0"
+jemallocator = "0.5"
 
 quinn = "0.10.2"
 quinn-proto = "0.10.5"

lite-rpc/Cargo.toml

@@ -42,6 +42,7 @@ tokio = { version = "1.28.2", features = ["full", "fs"]}
 tokio-util = "0.7"
 tokio-postgres = { version = "0.7.8", features = ["with-chrono-0_4"] }
 chrono = { workspace = true }
+jemallocator = { workspace = true }
 
 solana-lite-rpc-core = { workspace = true }
 solana-lite-rpc-services = { workspace = true }

lite-rpc/src/main.rs

@@ -54,6 +54,11 @@ use tokio::sync::mpsc;
 use tokio::sync::RwLock;
 use tokio::time::{timeout, Instant};
 
+// jemalloc seems to be better at keeping the memory footprint reasonable over
+// longer periods of time
+#[global_allocator]
+static ALLOC: jemallocator::Jemalloc = jemallocator::Jemalloc;
+
 async fn get_latest_block(
     mut block_stream: BlockStream,
     commitment_config: CommitmentConfig,