From eb5aa9ad02eef1b73caddaf709d7cacb65f09a7e Mon Sep 17 00:00:00 2001
From: Jan Eitzinger <jan@moebiusband.org>
Date: Wed, 28 Jan 2026 11:21:02 +0100
Subject: [PATCH] Disable explicit GC calls

---
 pkg/metricstore/checkpoint.go  | 17 ++++++++---------
 pkg/metricstore/metricstore.go |  7 +++----
 2 files changed, 11 insertions(+), 13 deletions(-)

diff --git a/pkg/metricstore/checkpoint.go b/pkg/metricstore/checkpoint.go
index c301058b..715566e4 100644
--- a/pkg/metricstore/checkpoint.go
+++ b/pkg/metricstore/checkpoint.go
@@ -43,7 +43,6 @@ import (
 	"os"
 	"path"
 	"path/filepath"
-	"runtime"
 	"sort"
 	"strconv"
 	"strings"
@@ -396,14 +395,14 @@ func enqueueCheckpointHosts(dir string, work chan<- [2]string) error {
 			}
 
 			gcCounter++
-			if gcCounter%GCTriggerInterval == 0 {
-				// Forcing garbage collection runs here regulary during the loading of checkpoints
-				// will decrease the total heap size after loading everything back to memory is done.
-				// While loading data, the heap will grow fast, so the GC target size will double
-				// almost always. By forcing GCs here, we can keep it growing more slowly so that
-				// at the end, less memory is wasted.
-				runtime.GC()
-			}
+			// if gcCounter%GCTriggerInterval == 0 {
+			// Forcing garbage collection runs here regulary during the loading of checkpoints
+			// will decrease the total heap size after loading everything back to memory is done.
+			// While loading data, the heap will grow fast, so the GC target size will double
+			// almost always. By forcing GCs here, we can keep it growing more slowly so that
+			// at the end, less memory is wasted.
+			// runtime.GC()
+			// }
 
 			work <- [2]string{clusterDir.Name(), hostDir.Name()}
 		}
diff --git a/pkg/metricstore/metricstore.go b/pkg/metricstore/metricstore.go
index 25f4547e..38ff9015 100644
--- a/pkg/metricstore/metricstore.go
+++ b/pkg/metricstore/metricstore.go
@@ -447,9 +447,9 @@ func MemoryUsageTracker(wg *sync.WaitGroup, ctx context.Context) {
 						}
 					}
 
-					if freedEmergency > 0 {
-						debug.FreeOSMemory()
-					}
+					// if freedEmergency > 0 {
+					// 	debug.FreeOSMemory()
+					// }
 
 					runtime.ReadMemStats(&mem)
 					actualMemoryGB = float64(mem.Alloc) / 1e9
@@ -460,7 +460,6 @@ func MemoryUsageTracker(wg *sync.WaitGroup, ctx context.Context) {
 						cclog.Infof("[METRICSTORE]> emergency freeing complete: %d buffers freed, memory now %.2f GB", freedEmergency, actualMemoryGB)
 					}
 				}
-
 			}
 		}
 	}()