arr_test: reduce key_max to 10M max.

Author: prataprc

src/arr_test.rs

@@ -11,7 +11,7 @@ fn test_arr_map() {
     // let seed: u128 = 268219686229904906077089108983355143992;
     let mut rng = SmallRng::from_seed(seed.to_le_bytes());
 
-    let key_max = [1024 * 1024 * 1024, 256, 16, 1024][rng.gen::<usize>() % 4];
+    let key_max = [10 * 1024 * 1024, 256, 16, 1024][rng.gen::<usize>() % 4];
     let n_ops = [1_000, 1_000_000, 10_000_000][rng.gen::<usize>() % 3];
     let n_threads = {
         let n = [1, 2, 4, 8, 16, 32, 64, 1024][rng.gen::<usize>() % 7];