httpd: remove memory profiling code

Remove objgraph/pympler imports, gc.get_objects() caching,
and memory_samples tracking. Keep basic RSS tracking for dashboard.

httpd.py

@@ -58,32 +58,14 @@ _LIB_CACHE = {}
 # Cache for dashboard static files (HTML, CSS, JS)
 _STATIC_CACHE = {}
 
-# Optional memory profiling (installed via requirements.txt)
-try:
-    import objgraph
-    _has_objgraph = True
-except ImportError:
-    _has_objgraph = False
-
-try:
-    from pympler import muppy, summary
-    _has_pympler = True
-except ImportError:
-    _has_pympler = False
-
-# Memory tracking for leak detection
-_memory_samples = []
-_memory_sample_max = 60  # Keep last 60 samples (5 min at 5s intervals)
-_peak_rss = 0
-_start_rss = 0
-
 # Cache for expensive operations
-_gc_objects_cache = {'value': 0, 'time': 0}
-_gc_objects_ttl = 30  # seconds
-
 _db_health_cache = {'value': {}, 'time': 0}
 _db_health_ttl = 10  # seconds
 
+# Simple RSS tracking for dashboard
+_peak_rss = 0
+_start_rss = 0
+
 # Worker registry for distributed testing
 import hashlib
 import random
@@ -669,39 +651,26 @@ def get_system_stats():
         stats['proc_rss'] = 0
         stats['proc_threads'] = 0
 
-    # Memory leak detection
+    # Simple RSS tracking for dashboard
-    global _memory_samples, _peak_rss, _start_rss
+    global _peak_rss, _start_rss
     rss = stats.get('proc_rss', 0)
     if rss > 0:
         if _start_rss == 0:
             _start_rss = rss
         if rss > _peak_rss:
             _peak_rss = rss
-        _memory_samples.append((time.time(), rss))
-        if len(_memory_samples) > _memory_sample_max:
-            _memory_samples.pop(0)
-
     stats['proc_rss_peak'] = _peak_rss
     stats['proc_rss_start'] = _start_rss
     stats['proc_rss_growth'] = rss - _start_rss if _start_rss > 0 else 0
 
-    # GC stats for leak detection
+    # GC generation counts (fast - no object iteration)
     try:
         gc_counts = gc.get_count()
         stats['gc_count_gen0'] = gc_counts[0]
         stats['gc_count_gen1'] = gc_counts[1]
         stats['gc_count_gen2'] = gc_counts[2]
-        # Cache gc.get_objects() - expensive call (~23ms)
+    except Exception:
-        global _gc_objects_cache
-        now = time.time()
-        if now - _gc_objects_cache['time'] > _gc_objects_ttl:
-            _gc_objects_cache['value'] = len(gc.get_objects())
-            _gc_objects_cache['time'] = now
-        stats['gc_objects'] = _gc_objects_cache['value']
-    except Exception as e:
-        _log('gc stats error: %s' % e, 'debug')
         stats['gc_count_gen0'] = stats['gc_count_gen1'] = stats['gc_count_gen2'] = 0
-        stats['gc_objects'] = 0
 
     return stats
 
@@ -1438,76 +1407,6 @@ class ProxyAPIServer(threading.Thread):
                 return json.dumps({'count': row[0] if row else 0}), 'application/json', 200
             except Exception as e:
                 return json.dumps({'error': str(e)}), 'application/json', 500
-        elif path == '/api/memory':
-            # Memory profiling endpoint (localhost only)
-            if not is_localhost(remote_addr):
-                return json.dumps({'error': 'not available'}), 'application/json', 404
-            try:
-                mem = {}
-
-                # Process memory from /proc/self/status
-                try:
-                    with open('/proc/self/status', 'r') as f:
-                        for line in f:
-                            if line.startswith('Vm'):
-                                parts = line.split()
-                                key = parts[0].rstrip(':')
-                                mem[key] = int(parts[1]) * 1024  # Convert to bytes
-                except IOError:
-                    pass
-
-                # GC stats
-                gc_stats = {
-                    'collections': gc.get_count(),
-                    'threshold': gc.get_threshold(),
-                    'objects': len(gc.get_objects()),
-                }
-
-                # Object type counts (top 20)
-                type_counts = {}
-                for obj in gc.get_objects():
-                    t = type(obj).__name__
-                    type_counts[t] = type_counts.get(t, 0) + 1
-                top_types = sorted(type_counts.items(), key=lambda x: -x[1])[:20]
-
-                # Memory samples history
-                samples = []
-                for ts, rss in _memory_samples[-30:]:
-                    samples.append({'time': int(ts), 'rss': rss})
-
-                result = {
-                    'process': mem,
-                    'gc': gc_stats,
-                    'top_types': [{'type': t, 'count': c} for t, c in top_types],
-                    'samples': samples,
-                    'peak_rss': _peak_rss,
-                    'start_rss': _start_rss,
-                    'has_objgraph': _has_objgraph,
-                    'has_pympler': _has_pympler,
-                }
-
-                # Objgraph most common types (if available)
-                if _has_objgraph:
-                    try:
-                        result['objgraph_common'] = objgraph.most_common_types(limit=15)
-                    except Exception as e:
-                        result['objgraph_error'] = str(e)
-
-                # Pympler summary (if available)
-                if _has_pympler:
-                    try:
-                        all_objects = muppy.get_objects()
-                        sum_table = summary.summarize(all_objects)
-                        result['pympler_summary'] = [
-                            {'type': row[0], 'count': row[1], 'size': row[2]}
-                            for row in sum_table[:20]
-                        ]
-                    except Exception as e:
-                        result['pympler_error'] = str(e)
-
-                return json.dumps(result, indent=2), 'application/json', 200
-            except Exception as e:
-                return json.dumps({'error': str(e)}), 'application/json', 500
         elif path == '/health':
             return json.dumps({'status': 'ok', 'version': __version__, 'timestamp': int(time.time())}), 'application/json', 200