fix(validator_client): raise soft fd limit

sigp · Sep 30, 2023 · d689d0a · d689d0a
1 parent 441fc16
commit d689d0a
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Showing 3 changed files with 24 additions and 1 deletion.
diff --git a/Cargo.lock b/Cargo.lock
diff --git a/validator_client/Cargo.toml b/validator_client/Cargo.toml
@@ -62,3 +62,4 @@ malloc_utils = { workspace = true }
 sysinfo = { workspace = true }
 system_health = { path = "../common/system_health" }
 logging = { workspace = true }
+fdlimit = "0.2.1"
diff --git a/validator_client/src/lib.rs b/validator_client/src/lib.rs
@@ -46,7 +46,7 @@ use notifier::spawn_notifier;
 use parking_lot::RwLock;
 use preparation_service::{PreparationService, PreparationServiceBuilder};
 use reqwest::Certificate;
-use slog::{error, info, warn, Logger};
+use slog::{debug, error, info, warn, Logger};
 use slot_clock::SlotClock;
 use slot_clock::SystemTimeSlotClock;
 use std::fs::File;
@@ -120,6 +120,18 @@ impl<T: EthSpec> ProductionValidatorClient<T> {
     pub async fn new(context: RuntimeContext<T>, config: Config) -> Result<Self, String> {
         let log = context.log().clone();
 
+        // Attempt to raise soft fd limit. The behavior is OS specific:
+        // `linux` - raise soft fd limit to hard
+        // `macos` - raise soft fd limit to `min(kernel limit, hard fd limit)`
+        // `windows` & rest - noop
+        if let Some(limit) = fdlimit::raise_fd_limit() {
+            debug!(
+                log,
+                "Raised soft open file descriptor resource limit";
+                "new_limit" => limit
+            );
+        }
+
         info!(
             log,
             "Starting validator client";