optimized create_n_users bench and ignore out.json

.gitignore

@@ -3,5 +3,6 @@ node_modules
 bench/metrics.csv
 *.pem*
 *.pks*
+*out.json*
 .env
 test-ledger

benches/create_n_users.bench.ts

@@ -1,6 +1,6 @@
-import { Connection, Keypair, LAMPORTS_PER_SOL, PublicKey } from '@solana/web3.js';
-import * as fs from 'fs';
+import { Connection, Keypair } from '@solana/web3.js';
 import * as splToken from "@solana/spl-token";
+import * as fs from 'fs';
 import * as os from 'os';
 
 // number of users
@@ -9,45 +9,42 @@ const nbUsers = +process.argv[2];
 const url = process.argv.length > 3 ? process.argv[3] : "http://0.0.0.0:8899";
 // outfile
 const outFile = process.argv.length > 4 ? process.argv[4] : "out.json";
- 
-console.log("creating " + nbUsers + " Users on " + url + " out file " + outFile);
-function delay(ms: number) {
-    return new Promise( resolve => setTimeout(resolve, ms) );
-}
-export async function main() {
-    const connection = new Connection(url, 'confirmed');
-    let authority = Keypair.fromSecretKey(
-        Uint8Array.from(
-          JSON.parse(
-            process.env.KEYPAIR ||
-                fs.readFileSync(os.homedir() + '/.config/solana/id.json', 'utf-8'),
-          ),
-        ),
-      );
 
-    let userKps = [...Array(nbUsers)].map(_x => Keypair.generate())
-    let mint = await splToken.createMint(
+(async function main() {
+    console.log("Creating " + nbUsers + " Users on " + url + " out file " + outFile);
+    console.time('Time taken');
+
+    const connection = new Connection(url, 'confirmed');
+
+    const authority = Keypair.fromSecretKey(
+        Uint8Array.from(
+            JSON.parse(
+                process.env.KEYPAIR ||
+                fs.readFileSync(os.homedir() + '/.config/solana/id.json', 'utf-8'),
+            ),
+        ),
+    );
+
+    const userKps = Array(nbUsers).fill(0).map(() => Keypair.generate());
+
+    const mint = await splToken.createMint(
         connection,
         authority,
         authority.publicKey,
         null,
         6,
     );
-    let accounts : PublicKey[] = [];
-    for (const user of userKps) {
-        console.log("account created");
-        let account = await splToken.createAccount(
+
+    const accounts = await Promise.all(userKps.map(async user => {
+        const account = await splToken.createAccount(
             connection,
             authority,
             mint,
             user.publicKey,
-        )
-        accounts.push(account)
-        await delay(100)
-    };
+        );
+
+        console.log("Account created");
 
-    for (const account of accounts) {
-        console.log("account minted");
         await splToken.mintTo(
             connection,
             authority,
@@ -56,30 +53,27 @@ export async function main() {
             authority,
             1_000_000_000_000,
         )
-        await delay(100)
-    };
 
-    const users = userKps.map(x => {
-        const info = {
-            'publicKey' : x.publicKey.toBase58(),
-            'secretKey' : Array.from(x.secretKey)
-        };
-        return info;
-    });
+        console.log("Account minted");
+
+        return account;
+    }));
+
+    console.timeLog('Time taken');
+
+    const users = userKps.map(x => ({
+        'publicKey': x.publicKey.toBase58(),
+        'secretKey': Array.from(x.secretKey)
+    }));
 
     const data = {
-        'users' : users,
-        'tokenAccounts' : accounts,
-        'mint' : mint,
-        'minted_amount' : 1_000_000_000_000
+        'users': users,
+        'tokenAccounts': accounts,
+        'mint': mint,
+        'minted_amount': 1_000_000_000_000
     };
 
     console.log('created ' + nbUsers + ' Users and minted 10^12 tokens for mint ' + mint);
-    fs.writeFileSync(outFile, JSON.stringify(data));
-}
 
-main().then(x => {
-    console.log('finished sucessfully')
-}).catch(e => {
-    console.log('caught an error : ' + e)
-})
+    fs.writeFileSync(outFile, JSON.stringify(data));
+})()