perf: Increase default max_fetch_prev_events to 256

src/api/server/send.rs

@@ -47,6 +47,7 @@ use service::transactions::{
 	FederationTxnState, TransactionError, TxnKey, WrappedTransactionResponse,
 };
 use tokio::sync::watch::{Receiver, Sender};
+use tracing::instrument;
 
 use crate::Ruma;
 

src/core/config/mod.rs

@@ -375,7 +375,7 @@ pub struct Config {
 	#[serde(default = "default_max_request_size")]
 	pub max_request_size: usize,
 
-	/// default: 192
+	/// default: 256
 	#[serde(default = "default_max_fetch_prev_events")]
 	pub max_fetch_prev_events: u16,
 
@@ -2549,7 +2549,7 @@ fn default_pusher_timeout() -> u64 { 60 }
 
 fn default_pusher_idle_timeout() -> u64 { 15 }
 
-fn default_max_fetch_prev_events() -> u16 { 192_u16 }
+fn default_max_fetch_prev_events() -> u16 { 256_u16 }
 
 fn default_max_concurrent_inbound_transactions() -> usize { 150 }