diff --git a/tcmalloc/experiment_config.h b/tcmalloc/experiment_config.h
index 176829718..f2556e586 100644
--- a/tcmalloc/experiment_config.h
+++ b/tcmalloc/experiment_config.h
@@ -23,6 +23,7 @@ namespace tcmalloc {
 enum class Experiment : int {
   // clang-format off
   // go/keep-sorted start
+  TCMALLOC_DEMAND_CYCLE_120S,  // TODO: b/540987155 - Complete experiment.
   TCMALLOC_HUGE_REGION_ADAPTIVE_RELEASE,  // TODO: b/535197873 - Complete experiment.
   TCMALLOC_PER_CPU_CACHE_SIZE_1MB,  // TODO: b/514747820 - Complete experiment.
   TCMALLOC_PGHO_EXPERIMENT,  // TODO: b/460486507 - Complete experiment.
@@ -53,6 +54,7 @@ struct ExperimentConfig {
 // clang-format off
 inline constexpr ExperimentConfig experiments[] = {
     // go/keep-sorted start
+    {Experiment::TCMALLOC_DEMAND_CYCLE_120S, "TCMALLOC_DEMAND_CYCLE_120S"},
     {Experiment::TCMALLOC_HUGE_REGION_ADAPTIVE_RELEASE, "TCMALLOC_HUGE_REGION_ADAPTIVE_RELEASE"},
     {Experiment::TCMALLOC_PER_CPU_CACHE_SIZE_1MB, "TCMALLOC_PER_CPU_CACHE_SIZE_1MB"},
     {Experiment::TCMALLOC_PGHO_EXPERIMENT, "TCMALLOC_PGHO_EXPERIMENT"},
diff --git a/tcmalloc/parameters.cc b/tcmalloc/parameters.cc
index bc5e55055..b1c0113ce 100644
--- a/tcmalloc/parameters.cc
+++ b/tcmalloc/parameters.cc
@@ -109,7 +109,11 @@ static std::atomic<int64_t>& skip_subrelease_short_interval_ns() {
 #if defined(TCMALLOC_INTERNAL_SMALL_BUT_SLOW)
   interval = absl::ZeroDuration();
 #else
-  interval = absl::Seconds(10);
+  if (IsExperimentActive(Experiment::TCMALLOC_DEMAND_CYCLE_120S)) {
+    interval = absl::Seconds(60);
+  } else {
+    interval = absl::Seconds(10);
+  }
 #endif
 
   absl::base_internal::LowLevelCallOnce(&flag, [&]() {
@@ -127,7 +131,11 @@ static std::atomic<int64_t>& skip_subrelease_long_interval_ns() {
 #if defined(TCMALLOC_INTERNAL_SMALL_BUT_SLOW)
   interval = absl::ZeroDuration();
 #else
-  interval = absl::Seconds(120);
+  if (IsExperimentActive(Experiment::TCMALLOC_DEMAND_CYCLE_120S)) {
+    interval = absl::Seconds(300);
+  } else {
+    interval = absl::Seconds(120);
+  }
 #endif
 
   absl::base_internal::LowLevelCallOnce(&flag, [&]() {
@@ -167,10 +175,13 @@ SubreleaseUnbackedMode Parameters::subrelease_unbacked_hugepages() {
 }
 
 std::atomic<MallocExtension::BytesPerSecond>& background_release_rate_ptr() {
+  ABSL_CONST_INIT static absl::once_flag flag;
   ABSL_CONST_INIT static std::atomic<MallocExtension::BytesPerSecond> v{
       MallocExtension::BytesPerSecond{
           0
       }};
+  absl::base_internal::LowLevelCallOnce(&flag, [&]() {
+  });
   return v;
 }
 
diff --git a/tcmalloc/testing/get_stats_test.cc b/tcmalloc/testing/get_stats_test.cc
index 6631a134e..0076fd619 100644
--- a/tcmalloc/testing/get_stats_test.cc
+++ b/tcmalloc/testing/get_stats_test.cc
@@ -109,12 +109,21 @@ TEST_F(GetStatsTest, Pbtxt) {
   EXPECT_THAT(buf, HasSubstr("tcmalloc_skip_subrelease_short_interval_ns: 0"));
   EXPECT_THAT(buf, HasSubstr("tcmalloc_skip_subrelease_long_interval_ns: 0"));
 #else
-  EXPECT_THAT(
-      buf,
-      HasSubstr("tcmalloc_skip_subrelease_short_interval_ns: 10000000000"));
-  EXPECT_THAT(
-      buf,
-      HasSubstr("tcmalloc_skip_subrelease_long_interval_ns: 120000000000"));
+  if (IsExperimentActive(Experiment::TCMALLOC_DEMAND_CYCLE_120S)) {
+    EXPECT_THAT(
+        buf,
+        HasSubstr("tcmalloc_skip_subrelease_short_interval_ns: 60000000000"));
+    EXPECT_THAT(
+        buf,
+        HasSubstr("tcmalloc_skip_subrelease_long_interval_ns: 300000000000"));
+  } else {
+    EXPECT_THAT(
+        buf,
+        HasSubstr("tcmalloc_skip_subrelease_short_interval_ns: 10000000000"));
+    EXPECT_THAT(
+        buf,
+        HasSubstr("tcmalloc_skip_subrelease_long_interval_ns: 120000000000"));
+  }
 #endif
 
   EXPECT_THAT(buf, HasSubstr("tcmalloc_release_partial_alloc_pages: true"));