diff --git a/platform/platform-impl/src/com/intellij/ide/AppIdleMemoryCleaner.kt b/platform/platform-impl/src/com/intellij/ide/AppIdleMemoryCleaner.kt
index fd63c6d84f90..b74c261f63c8 100644
--- a/platform/platform-impl/src/com/intellij/ide/AppIdleMemoryCleaner.kt
+++ b/platform/platform-impl/src/com/intellij/ide/AppIdleMemoryCleaner.kt
@@ -129,8 +129,10 @@ class AppIdleMemoryCleaner(private val cs: CoroutineScope) {
     stats.measureGc {
       runGc()
     }
-    stats.measureDirectBuffers {
-      releaseIndexCachedDirectBuffers()
+    if (!Registry.`is`("ide.idle.memory.cleaner.enabled.page.cache.release")) {
+      stats.measureDirectBuffers {
+        releaseIndexCachedDirectBuffers()
+      }
     }
 
     PlatformMemoryUtil.getInstance().trimLinuxNativeHeap()
diff --git a/platform/platform-resources/src/META-INF/PlatformExtensions.xml b/platform/platform-resources/src/META-INF/PlatformExtensions.xml
index c750b37ca00c..a0fc423cf6b8 100644
--- a/platform/platform-resources/src/META-INF/PlatformExtensions.xml
+++ b/platform/platform-resources/src/META-INF/PlatformExtensions.xml
@@ -2057,6 +2057,9 @@ The refresh itself is toggled by (Preferences | Appearance & Behavior | Syst
     <registryKey key="ide.idle.memory.cleaner.delay"
                  defaultValue="5000"
                  description="A delay in milliseconds between the IDE becoming idle and the memory cleaning being performed"/>
+    <registryKey key="ide.idle.memory.cleaner.enabled.page.cache.release"
+                 defaultValue="false"
+                 description="Flush and release allocated direct buffers to OS when IDE becomes idle"/>
     <registryKey key="progresses.show.counter.icon.instead.of.show.link"
                  defaultValue="true"
                  description="Progresses would be shown with an icon with their number in status bar instead of Show All link"/>