fix(config): change default for the cpu range in nox (#2140)

* fix

* fix fmt

crates/server-config/src/defaults.rs

@@ -19,6 +19,7 @@ use std::net::IpAddr;
 use std::path::{Path, PathBuf};
 use std::time::Duration;
 
+use core_manager::CoreRange;
 use libp2p::core::Multiaddr;
 use libp2p::identity::ed25519::Keypair;
 use libp2p::identity::PublicKey;
@@ -70,6 +71,20 @@ pub fn default_system_cpu_count() -> usize {
     }
 }
 
+pub fn default_cpus_range() -> Option<CoreRange> {
+    let total = num_cpus::get_physical();
+    let left = match total {
+        c if c > 32 => 3,
+        c if c > 16 => 2,
+        c if c > 8 => 1,
+        _ => 0,
+    };
+    Some(
+        CoreRange::try_from(Vec::from_iter(left..total).as_slice())
+            .expect("Cpu range can't be empty"),
+    )
+}
+
 pub fn default_websocket_port() -> u16 {
     9999
 }

crates/server-config/src/node_config.rs

@@ -33,6 +33,7 @@ use super::defaults::*;
 #[derive(Clone, Deserialize, Serialize, Derivative)]
 #[derivative(Debug)]
 pub struct UnresolvedNodeConfig {
+    #[serde(default = "default_cpus_range")]
     pub cpus_range: Option<CoreRange>,
 
     #[serde(default = "default_system_cpu_count")]