chore: update benchmark doc (#4201)

* update benchmark doc * minor
apache · Feb 20, 2024 · cb654b3 · cb654b3
1 parent 643d966
commit cb654b3
Showing 1 changed file with 4 additions and 3 deletions.
diff --git a/core/benches/ops/README.md b/core/benches/ops/README.md
@@ -29,11 +29,12 @@ Notice: The default will skip all benches if the env is not set.
 Test all available backend.
 
 ```shell
-cargo bench
+cargo bench --features tests
 ```
 
-Test specific backend.
+Test specific backend, take s3 for example, first set the corresponding environment variables of s3, then:
 
 ```shell
-cargo bench fs
+OPENDAL_TEST=s3
+cargo bench --features tests
 ```