Summary

Obsolete the unused product option NUMAPageScanRate.

Problem

The JVM option NUMAPageScanRate is unused since removal of the last use in JDK 22. The effect of the option itself has been a no-op since removal of the Solaris port in JDK 15 because it enabled Solaris specific functionality.

Solution

Obsolete the NUMAPageScanRate option with the goal to remove it.

Specification

diff --git a/src/hotspot/share/runtime/arguments.cpp b/src/hotspot/share/runtime/arguments.cpp
index 8f3b9aa11c7..bacbe3f343f 100644
--- a/src/hotspot/share/runtime/arguments.cpp
+++ b/src/hotspot/share/runtime/arguments.cpp
@@ -528,6 +528,7 @@ static SpecialFlag const special_jvm_flags[] = {
   { "DefaultMaxRAMFraction",        JDK_Version::jdk(8),  JDK_Version::jdk(23), JDK_Version::jdk(24) },
   { "TLABStats",                    JDK_Version::jdk(12), JDK_Version::jdk(23), JDK_Version::jdk(24) },
   { "GCLockerEdenExpansionPercent", JDK_Version::undefined(), JDK_Version::jdk(23), JDK_Version::jdk(24) },
+  { "NUMAPageScanRate",             JDK_Version::undefined(), JDK_Version::jdk(23), JDK_Version::jdk(24) },
 #ifdef ASSERT
   { "DummyObsoleteTestFlag",        JDK_Version::undefined(), JDK_Version::jdk(18), JDK_Version::undefined() },
 #endif
diff --git a/src/hotspot/share/runtime/globals.hpp b/src/hotspot/share/runtime/globals.hpp
index 6d3edcf8ed9..13e0573ce4a 100644
--- a/src/hotspot/share/runtime/globals.hpp
+++ b/src/hotspot/share/runtime/globals.hpp
@@ -220,10 +220,6 @@ const int ObjectAlignmentInBytes = 8;
   product(bool, NUMAStats, false,                                           \
           "Print NUMA stats in detailed heap information")                  \
                                                                             \
-  product(uintx, NUMAPageScanRate, 256,                                     \
-          "Maximum number of pages to include in the page scan procedure")  \
-          range(0, max_uintx)                                               \
-                                                                            \
   product(bool, UseAES, false,                                              \
           "Control whether AES instructions are used when available")       \