v0.34.0_12

src/metrics/vhost/tests.rs

@@ -63,4 +63,18 @@ mod compression_counter_tests {
         assert_eq!(view.compression_zstd, 1);
         assert_eq!(view.compression_deflate, 1);
     }
+    #[test]
+    fn cache_aligned_counters_keep_exact_values_and_separate_hot_lines() {
+        let m = VhostMetrics::default();
+        let ewma = &m.ewma_duration_us as *const _ as usize;
+        assert_eq!(ewma % 64, 0);
+        m.active.fetch_add(1, Ordering::Relaxed);
+        m.requests.fetch_add(1, Ordering::Relaxed);
+        m.complete(200, false, std::time::Duration::from_micros(100), 20, 1040);
+        assert_eq!(n(&m.completed), 1);
+        assert_eq!(n(&m.active), 0);
+        assert_eq!(n(&m.requests), 1);
+        assert_eq!(n(&m.bytes_out), 1040);
+        assert_eq!(n(&m.ewma_duration_us), 100);
+    }
 }