one more benchmark

Author: patricebender

db-service/bench/cqn4sql/performance-benchmarks.test.js

@@ -28,6 +28,7 @@ describe('cqn4sql performance benchmarks', () => {
   runBenchmarkFor('expand recursive (depth 3)', cds.ql`SELECT from my.Genres { ID, parent { parent { parent { name }}} }`)
 
   runBenchmarkFor('exists simple', cds.ql`SELECT from my.Genres { ID } where exists parent`)
+  runBenchmarkFor('exists simple with path expression', cds.ql`SELECT from my.Genres { ID } where exists parent[parent.name = 'foo']`)
   runBenchmarkFor('exists recursive (depth 3)', cds.ql`SELECT from my.Genres { ID } where exists parent.parent.parent`)
 
   runBenchmarkFor('assoc2join simple', cds.ql`SELECT from my.Books { ID, author.name }`)

db-service/bench/cqn4sql/results/cqn4sql-benchmarks.json

@@ -1382,5 +1382,202 @@
         "sent": 138192
       }
     }
+  },
+  "8ef8958b": {
+    "date": "2025-08-27T16:09:15.187Z",
+    "benchmarks": {
+      "select simple": {
+        "average": 89536,
+        "mean": 89536,
+        "stddev": 224,
+        "min": 89314,
+        "max": 89782,
+        "total": 269236,
+        "p0_001": 89343,
+        "p0_01": 89343,
+        "p0_1": 89343,
+        "p1": 89343,
+        "p2_5": 89343,
+        "p10": 89343,
+        "p25": 89343,
+        "p50": 89343,
+        "p75": 89791,
+        "p90": 89791,
+        "p97_5": 89791,
+        "p99": 89791,
+        "p99_9": 89791,
+        "p99_99": 89791,
+        "p99_999": 89791,
+        "sent": 269236
+      },
+      "expand simple": {
+        "average": 20264,
+        "mean": 20264,
+        "stddev": 704,
+        "min": 19567,
+        "max": 20967,
+        "total": 61689,
+        "p0_001": 19567,
+        "p0_01": 19567,
+        "p0_1": 19567,
+        "p1": 19567,
+        "p2_5": 19567,
+        "p10": 19567,
+        "p25": 19567,
+        "p50": 19567,
+        "p75": 20975,
+        "p90": 20975,
+        "p97_5": 20975,
+        "p99": 20975,
+        "p99_9": 20975,
+        "p99_99": 20975,
+        "p99_999": 20975,
+        "sent": 61689
+      },
+      "expand recursive (depth 3)": {
+        "average": 8179,
+        "mean": 8179,
+        "stddev": 137,
+        "min": 8042,
+        "max": 8316,
+        "total": 24638,
+        "p0_001": 8043,
+        "p0_01": 8043,
+        "p0_1": 8043,
+        "p1": 8043,
+        "p2_5": 8043,
+        "p10": 8043,
+        "p25": 8043,
+        "p50": 8043,
+        "p75": 8319,
+        "p90": 8319,
+        "p97_5": 8319,
+        "p99": 8319,
+        "p99_9": 8319,
+        "p99_99": 8319,
+        "p99_999": 8319,
+        "sent": 24638
+      },
+      "exists simple": {
+        "average": 60560,
+        "mean": 60560,
+        "stddev": 320,
+        "min": 60246,
+        "max": 60874,
+        "total": 178901,
+        "p0_001": 60255,
+        "p0_01": 60255,
+        "p0_1": 60255,
+        "p1": 60255,
+        "p2_5": 60255,
+        "p10": 60255,
+        "p25": 60255,
+        "p50": 60255,
+        "p75": 60895,
+        "p90": 60895,
+        "p97_5": 60895,
+        "p99": 60895,
+        "p99_9": 60895,
+        "p99_99": 60895,
+        "p99_999": 60895,
+        "sent": 178901
+      },
+      "exists simple with path expression": {
+        "average": 22560,
+        "mean": 22560,
+        "stddev": 344,
+        "min": 22220,
+        "max": 22902,
+        "total": 67606,
+        "p0_001": 22223,
+        "p0_01": 22223,
+        "p0_1": 22223,
+        "p1": 22223,
+        "p2_5": 22223,
+        "p10": 22223,
+        "p25": 22223,
+        "p50": 22223,
+        "p75": 22911,
+        "p90": 22911,
+        "p97_5": 22911,
+        "p99": 22911,
+        "p99_9": 22911,
+        "p99_99": 22911,
+        "p99_999": 22911,
+        "sent": 67606
+      },
+      "exists recursive (depth 3)": {
+        "average": 41888,
+        "mean": 41888,
+        "stddev": 16,
+        "min": 41871,
+        "max": 41898,
+        "total": 127501,
+        "p0_001": 41887,
+        "p0_01": 41887,
+        "p0_1": 41887,
+        "p1": 41887,
+        "p2_5": 41887,
+        "p10": 41887,
+        "p25": 41887,
+        "p50": 41887,
+        "p75": 41919,
+        "p90": 41919,
+        "p97_5": 41919,
+        "p99": 41919,
+        "p99_9": 41919,
+        "p99_99": 41919,
+        "p99_999": 41919,
+        "sent": 127501
+      },
+      "assoc2join simple": {
+        "average": 52960,
+        "mean": 52960,
+        "stddev": 784,
+        "min": 52162,
+        "max": 53755,
+        "total": 156900,
+        "p0_001": 52191,
+        "p0_01": 52191,
+        "p0_1": 52191,
+        "p1": 52191,
+        "p2_5": 52191,
+        "p10": 52191,
+        "p25": 52191,
+        "p50": 52191,
+        "p75": 53759,
+        "p90": 53759,
+        "p97_5": 53759,
+        "p99": 53759,
+        "p99_9": 53759,
+        "p99_99": 53759,
+        "p99_999": 53759,
+        "sent": 156900
+      },
+      "assoc2join recursive (depth 3)": {
+        "average": 44128,
+        "mean": 44128,
+        "stddev": 656,
+        "min": 43473,
+        "max": 44797,
+        "total": 132577,
+        "p0_001": 43487,
+        "p0_01": 43487,
+        "p0_1": 43487,
+        "p1": 43487,
+        "p2_5": 43487,
+        "p10": 43487,
+        "p25": 43487,
+        "p50": 43487,
+        "p75": 44799,
+        "p90": 44799,
+        "p97_5": 44799,
+        "p99": 44799,
+        "p99_9": 44799,
+        "p99_99": 44799,
+        "p99_999": 44799,
+        "sent": 132577
+      }
+    }
   }
 }

db-service/bench/cqn4sql/utils/visualize-benchmarks.js

@@ -65,7 +65,8 @@ const html = `<!doctype html>
 </style>
 <h1>Perf Benchmarks (requests/second) by Commit</h1>
 <div class="meta">
-  Data: ${path.basename(dumpPath)} • Commits: ${entries.length} • Metric: requests.${metric}
+  Data: ${path.basename(dumpPath)} • Commits: ${entries.length} • Metric: requests.${metric} <br>
+  Requests per second (higher = better).
 </div>
 <div style="margin:8px 0">
   <label for="filter">Filter benchmark:</label>