measure time

mass-transfer-2/src/main.rs

@@ -13,6 +13,7 @@ use solana_sdk::{
     system_instruction,
     transaction::Transaction,
 };
+use tokio::time::Instant;
 
 #[derive(Deserialize)]
 struct Cfg {
@@ -100,17 +101,20 @@ async fn main() -> Result<(), Box<dyn Error>> {
     print_balances(client.clone(), all_accounts.clone()).await?;
 
     let transfer_amount = LAMPORTS_PER_SOL / 100;
-    println!(
-        "sending {} SOL",
-        transfer_amount as f64 / LAMPORTS_PER_SOL as f64
-    );
 
+    let now = Instant::now();
     let transactions = run_batch(config.transfers.iter().map(|tr| {
         let instruction =
             system_instruction::transfer(&tr.sender.pubkey(), &tr.receiver, transfer_amount);
         let mut transaction =
             Transaction::new_with_payer(&[instruction], Some(&tr.sender.pubkey()));
         let client = client.clone();
+        println!(
+            "sending {} SOL from {} to {}",
+            transfer_amount as f64 / LAMPORTS_PER_SOL as f64,
+            tr.sender.pubkey(),
+            tr.receiver
+        );
         async move {
             let blockhash = client.get_latest_blockhash().await?;
             transaction.sign(&[&tr.sender], blockhash);
@@ -123,7 +127,7 @@ async fn main() -> Result<(), Box<dyn Error>> {
     println!("Waiting for confirmation...");
     wait_for_confirmation(client.clone(), &transactions).await?;
 
-    println!("Mass-transfer is done");
+    println!("Done in {}ms", now.elapsed().as_millis());
     print_balances(client.clone(), all_accounts).await?;
     Ok(())
 }