Add search level metric (#1139)

chasingegg · web-flow · commit f6f003008889 · 2025-04-10T11:22:19.000+08:00
Signed-off-by: chasingegg &lt;chao.gao@zilliz.com&gt;
diff --git a/include/knowhere/prometheus_client.h b/include/knowhere/prometheus_client.h
@@ -105,6 +105,7 @@ DECLARE_PROMETHEUS_HISTOGRAM(ann_iterator_init_latency, PROMETHEUS_LABEL_CARDINA
 DECLARE_PROMETHEUS_HISTOGRAM(search_topk, PROMETHEUS_LABEL_KNOWHERE);
 DECLARE_PROMETHEUS_HISTOGRAM(search_topk, PROMETHEUS_LABEL_CARDINAL);
 
+DECLARE_PROMETHEUS_HISTOGRAM(search_level, PROMETHEUS_LABEL_CARDINAL);
 DECLARE_PROMETHEUS_HISTOGRAM(bitset_ratio, PROMETHEUS_LABEL_CARDINAL);
 DECLARE_PROMETHEUS_HISTOGRAM(quant_compute_cnt, PROMETHEUS_LABEL_CARDINAL);
 DECLARE_PROMETHEUS_HISTOGRAM(raw_compute_cnt, PROMETHEUS_LABEL_CARDINAL);
diff --git a/src/common/prometheus_client.cc b/src/common/prometheus_client.cc
@@ -53,6 +53,9 @@ DEFINE_PROMETHEUS_HISTOGRAM_FAMILY(search_topk, "search topk")
 DEFINE_PROMETHEUS_HISTOGRAM(search_topk, PROMETHEUS_LABEL_KNOWHERE)
 DEFINE_PROMETHEUS_HISTOGRAM(search_topk, PROMETHEUS_LABEL_CARDINAL)
 
+DEFINE_PROMETHEUS_HISTOGRAM_FAMILY(search_level, "search level")
+DEFINE_PROMETHEUS_HISTOGRAM(search_level, PROMETHEUS_LABEL_CARDINAL)
+
 DEFINE_PROMETHEUS_HISTOGRAM_FAMILY(bitset_ratio, "bitset ratio")
 DEFINE_PROMETHEUS_HISTOGRAM_WITH_BUCKETS(bitset_ratio, PROMETHEUS_LABEL_CARDINAL, ratioBuckets)
 
