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8256419: ZGC: Remove "Heap Used Before/After Mark/Relocation" samplers #1239

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8256419: ZGC: Remove "Heap Used Before/After Mark/Relocation" samplers #1239

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10 changes: 0 additions & 10 deletions src/hotspot/share/gc/z/zHeap.cpp
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Original file line number Diff line number Diff line change
@@ -47,10 +47,6 @@
#include "runtime/thread.hpp"
#include "utilities/debug.hpp"

static const ZStatSampler ZSamplerHeapUsedBeforeMark("Memory", "Heap Used Before Mark", ZStatUnitBytes);
static const ZStatSampler ZSamplerHeapUsedAfterMark("Memory", "Heap Used After Mark", ZStatUnitBytes);
static const ZStatSampler ZSamplerHeapUsedBeforeRelocation("Memory", "Heap Used Before Relocation", ZStatUnitBytes);
static const ZStatSampler ZSamplerHeapUsedAfterRelocation("Memory", "Heap Used After Relocation", ZStatUnitBytes);
static const ZStatCounter ZCounterUndoPageAllocation("Memory", "Undo Page Allocation", ZStatUnitOpsPerSecond);
static const ZStatCounter ZCounterOutOfMemory("Memory", "Out Of Memory", ZStatUnitOpsPerSecond);

@@ -245,9 +241,6 @@ void ZHeap::flip_to_remapped() {
void ZHeap::mark_start() {
assert(SafepointSynchronize::is_at_safepoint(), "Should be at safepoint");

// Update statistics
ZStatSample(ZSamplerHeapUsedBeforeMark, used());

// Flip address view
flip_to_marked();

@@ -294,7 +287,6 @@ bool ZHeap::mark_end() {
ZVerify::after_mark();

// Update statistics
ZStatSample(ZSamplerHeapUsedAfterMark, used());
ZStatHeap::set_at_mark_end(capacity(), allocated(), used());

// Block resurrection of weak/phantom references
@@ -443,7 +435,6 @@ void ZHeap::relocate_start() {
ZGlobalPhase = ZPhaseRelocate;

// Update statistics
ZStatSample(ZSamplerHeapUsedBeforeRelocation, used());
ZStatHeap::set_at_relocate_start(capacity(), allocated(), used());

// Remap/Relocate roots
@@ -455,7 +446,6 @@ void ZHeap::relocate() {
const bool success = _relocate.relocate(&_relocation_set);

// Update statistics
ZStatSample(ZSamplerHeapUsedAfterRelocation, used());
ZStatRelocation::set_at_relocate_end(success);
ZStatHeap::set_at_relocate_end(capacity(), allocated(), reclaimed(),
used(), used_high(), used_low());