Track new metrics `malloc_peak` and `malloc_current`

Move class to config-model-api to be shared with internal config server integration.

3 files changed, 78 insertions, 0 deletions

diff --git a/config-model-api/abi-spec.json b/config-model-api/abi-spec.json
index b28401f1873..6b663800b67 100644
--- a/config-model-api/abi-spec.json
+++ b/config-model-api/abi-spec.json
@@ -1420,6 +1420,31 @@
     ],
     "fields" : [ ]
   },
+  "com.yahoo.config.model.api.OnnxMemoryStats" : {
+    "superClass" : "java.lang.Record",
+    "interfaces" : [ ],
+    "attributes" : [
+      "public",
+      "final",
+      "record"
+    ],
+    "methods" : [
+      "public void <init>(long, long, long, long)",
+      "public static com.yahoo.config.model.api.OnnxMemoryStats fromJson(com.fasterxml.jackson.databind.JsonNode)",
+      "public static com.yahoo.config.model.api.OnnxMemoryStats fromJson(com.yahoo.config.application.api.ApplicationFile)",
+      "public static com.yahoo.path.Path memoryStatsFilePath(com.yahoo.path.Path)",
+      "public long peakMemoryUsage()",
+      "public com.fasterxml.jackson.databind.JsonNode toJson()",
+      "public final java.lang.String toString()",
+      "public final int hashCode()",
+      "public final boolean equals(java.lang.Object)",
+      "public long vmSize()",
+      "public long vmRss()",
+      "public long mallocPeak()",
+      "public long mallocCurrent()"
+    ],
+    "fields" : [ ]
+  },
   "com.yahoo.config.model.api.OnnxModelCost$Calculator" : {
     "superClass" : "java.lang.Object",
     "interfaces" : [ ],
diff --git a/config-model-api/src/main/java/com/yahoo/config/model/api/OnnxMemoryStats.java b/config-model-api/src/main/java/com/yahoo/config/model/api/OnnxMemoryStats.java
new file mode 100644
index 00000000000..4e660c6fe73
--- /dev/null
+++ b/config-model-api/src/main/java/com/yahoo/config/model/api/OnnxMemoryStats.java
@@ -0,0 +1,49 @@
+// Copyright Yahoo. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
+
+package com.yahoo.config.model.api;
+
+import com.fasterxml.jackson.databind.JsonNode;
+import com.fasterxml.jackson.databind.ObjectMapper;
+import com.yahoo.config.application.api.ApplicationFile;
+import com.yahoo.config.application.api.ApplicationPackage;
+import com.yahoo.path.Path;
+
+import java.io.IOException;
+import java.util.Optional;
+
+/**
+ * Memory statistics as reported by vespa-analyze-onnx-model.
+ *
+ * @author bjorncs
+ */
+public record OnnxMemoryStats(long vmSize, long vmRss, long mallocPeak, long mallocCurrent) {
+    private static final String VM_SIZE_FIELD = "vm_size", VM_RSS_FIELD = "vm_rss",
+            MALLOC_PEAK_FIELD = "malloc_peak", MALLOC_CURRENT_FIELD = "malloc_current";
+    private static final ObjectMapper jsonParser = new ObjectMapper();
+
+    /** Parse output from `vespa-analyze-onnx-model --probe-types` */
+    public static OnnxMemoryStats fromJson(JsonNode json) {
+        return new OnnxMemoryStats(json.get(VM_SIZE_FIELD).asLong(), json.get(VM_RSS_FIELD).asLong(),
+                                   // Temporarily allow missing fields until old config model versions are gone
+                                   Optional.ofNullable(json.get(MALLOC_PEAK_FIELD)).map(JsonNode::asLong).orElse(0L),
+                                   Optional.ofNullable(json.get(MALLOC_CURRENT_FIELD)).map(JsonNode::asLong).orElse(0L));
+    }
+
+    /** @see #fromJson(JsonNode)  */
+    public static OnnxMemoryStats fromJson(ApplicationFile file) throws IOException {
+        return fromJson(jsonParser.readTree(file.createReader()));
+    }
+
+    public static Path memoryStatsFilePath(Path modelPath) {
+        var fileName = modelPath.getRelative().replaceAll("[^\\w\\d\\$@_]", "_") + ".memory_stats";
+        return ApplicationPackage.MODELS_GENERATED_REPLICATED_DIR.append(fileName);
+    }
+
+    public long peakMemoryUsage() { return Long.max(vmSize, Long.max(vmRss, Long.max(mallocPeak, mallocCurrent))); }
+
+    public JsonNode toJson() {
+        return jsonParser.createObjectNode().put(VM_SIZE_FIELD, vmSize).put(VM_RSS_FIELD, vmRss)
+                .put(MALLOC_PEAK_FIELD, mallocPeak).put(MALLOC_CURRENT_FIELD, mallocCurrent);
+    }
+}
+
diff --git a/config-model-api/src/main/java/com/yahoo/config/model/api/OnnxModelCost.java b/config-model-api/src/main/java/com/yahoo/config/model/api/OnnxModelCost.java
index e6fe3ce18b5..44f3d63f8af 100644
--- a/config-model-api/src/main/java/com/yahoo/config/model/api/OnnxModelCost.java
+++ b/config-model-api/src/main/java/com/yahoo/config/model/api/OnnxModelCost.java
@@ -2,6 +2,8 @@
 
 package com.yahoo.config.model.api;
 
+import com.fasterxml.jackson.databind.JsonNode;
+import com.fasterxml.jackson.databind.ObjectMapper;
 import com.yahoo.config.ModelReference;
 import com.yahoo.config.application.api.ApplicationFile;
 import com.yahoo.config.application.api.ApplicationPackage;
@@ -31,4 +33,6 @@ public interface OnnxModelCost {
             @Override public void registerModel(URI uri) {}
         };
     }
+
+
 }