diff --git a/solr/CHANGES.txt b/solr/CHANGES.txt
index 7f0e49ba5d0..fa6dcbaac2a 100644
--- a/solr/CHANGES.txt
+++ b/solr/CHANGES.txt
@@ -54,6 +54,8 @@ Bug Fixes
 Optimizations
 ----------------------
 
+* SOLR-9374: Speed up Jmx MBean retrieval for FieldCache. (Tim Owen via shalin)
+
 Other Changes
 ----------------------
 
diff --git a/solr/core/src/java/org/apache/solr/search/SolrFieldCacheMBean.java b/solr/core/src/java/org/apache/solr/search/SolrFieldCacheMBean.java
index 4c8c0c10bca..62bc4fa1ff2 100644
--- a/solr/core/src/java/org/apache/solr/search/SolrFieldCacheMBean.java
+++ b/solr/core/src/java/org/apache/solr/search/SolrFieldCacheMBean.java
@@ -61,12 +61,14 @@ public class SolrFieldCacheMBean implements JmxAugmentedSolrInfoMBean {
 
   private NamedList getStats(boolean listEntries) {
     NamedList stats = new SimpleOrderedMap();
-    String[] entries = UninvertingReader.getUninvertedStats();
-    stats.add("entries_count", entries.length);
     if (listEntries) {
+      String[] entries = UninvertingReader.getUninvertedStats();
+      stats.add("entries_count", entries.length);
       for (int i = 0; i < entries.length; i++) {
         stats.add("entry#" + i, entries[i]);
       }
+    } else {
+      stats.add("entries_count", UninvertingReader.getUninvertedStatsSize());
     }
     return stats;
   }
diff --git a/solr/core/src/java/org/apache/solr/uninverting/UninvertingReader.java b/solr/core/src/java/org/apache/solr/uninverting/UninvertingReader.java
index 4450cbb7d86..3bc5e3eda70 100644
--- a/solr/core/src/java/org/apache/solr/uninverting/UninvertingReader.java
+++ b/solr/core/src/java/org/apache/solr/uninverting/UninvertingReader.java
@@ -388,4 +388,8 @@ public class UninvertingReader extends FilterLeafReader {
     }
     return info;
   }
+
+  public static int getUninvertedStatsSize() {
+    return FieldCache.DEFAULT.getCacheEntries().length;
+  }
 }