diff --git a/core/hakmem_shared_pool.c b/core/hakmem_shared_pool.c
index 92beb38c..89ac6c16 100644
--- a/core/hakmem_shared_pool.c
+++ b/core/hakmem_shared_pool.c
@@ -542,12 +542,17 @@ sp_acquire_from_empty_scan(int class_idx, SuperSlab** ss_out, int* slab_idx_out,
 
     int reg_size = (class_idx < TINY_NUM_CLASSES) ? g_super_reg_class_size[class_idx] : 0;
     static int scan_limit = -1;
-    if (__builtin_expect(scan_limit == -1, 0)) {
-        const char* e = getenv("HAKMEM_SS_EMPTY_SCAN_LIMIT");
-        scan_limit = (e && *e) ? atoi(e) : 16;  // default: scan first 16 SuperSlabs
-    }
+        if (__builtin_expect(scan_limit == -1, 0)) {
+            const char* e = getenv("HAKMEM_SS_EMPTY_SCAN_LIMIT");
+            scan_limit = (e && *e) ? atoi(e) : 32;  // default: scan first 32 SuperSlabs (Phase 9-2 tuning)
+        }
     if (scan_limit > reg_size) scan_limit = reg_size;
 
+    // Stage 0.5 hit counter for visualization
+    static _Atomic uint64_t stage05_hits = 0;
+    static _Atomic uint64_t stage05_attempts = 0;
+    atomic_fetch_add_explicit(&stage05_attempts, 1, memory_order_relaxed);
+
     for (int i = 0; i < scan_limit; i++) {
         SuperSlab* ss = g_super_reg_by_class[class_idx][i];
         if (!(ss && ss->magic == SUPERSLAB_MAGIC)) continue;
@@ -582,6 +587,15 @@ sp_acquire_from_empty_scan(int class_idx, SuperSlab** ss_out, int* slab_idx_out,
                 if (g_sp_stage_stats_enabled) {
                     atomic_fetch_add(&g_sp_stage1_hits[class_idx], 1);
                 }
+                atomic_fetch_add_explicit(&stage05_hits, 1, memory_order_relaxed);
+                
+                // Stage 0.5 hit rate visualization (every 100 hits)
+                uint64_t hits = atomic_load_explicit(&stage05_hits, memory_order_relaxed);
+                if (hits % 100 == 1) {
+                    uint64_t attempts = atomic_load_explicit(&stage05_attempts, memory_order_relaxed);
+                    fprintf(stderr, "[STAGE0.5_STATS] hits=%lu attempts=%lu rate=%.1f%% (scan_limit=%d)\n",
+                            hits, attempts, (double)hits * 100.0 / attempts, scan_limit);
+                }
                 return 0;
             }
         }