refine the memory watcher.

@@ -961,6 +961,12 @@ void SrsSource::dispose()
     hls->dispose();
 #endif
     
+    // cleaup the cached packets.
+    srs_freep(cache_metadata);
+    srs_freep(cache_sh_video);
+    srs_freep(cache_sh_audio);
+    
+    // cleanup the gop cache.
     gop_cache->dispose();
 }
 

@@ -74,7 +74,7 @@ void srs_memory_report()
     std::map<void*, SrsMemoryObject*>::iterator it;
     for (it = _srs_ptrs.begin(); it != _srs_ptrs.end(); ++it) {
         SrsMemoryObject* obj = it->second;
-        printf("    %s: %#"PRIx64", %dKB\n", obj->category.c_str(), (int64_t)obj->ptr, obj->size / 1000);
+        printf("    %s: %#"PRIx64", %dB\n", obj->category.c_str(), (int64_t)obj->ptr, obj->size);
         total += obj->size;
     }
     

@@ -192,8 +192,8 @@ CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  * whether enable the special memory watcher.
  * which used for memory leak debug and hurts performance.
  */
-#undef SRS_MEM_WATCH
 #define SRS_MEM_WATCH
+#undef SRS_MEM_WATCH
 
 #endif
 

@@ -211,6 +211,11 @@ void check_macro_features()
     #warning "current branch is not stable, please use stable branch instead."
     srs_warn("SRS %s is not stable, please use stable branch %s instead", RTMP_SIG_SRS_VERSION, VERSION_STABLE_BRANCH);
 #endif
+    
+#ifdef SRS_MEM_WATCH
+    #warning "srs memory watcher will hurts performance. user should kill by SIGTERM or init.d script."
+    srs_warn("srs memory watcher will hurts performance. user should kill by SIGTERM or init.d script.");
+#endif
 
 #if defined(SRS_AUTO_STREAM_CASTER)
     #warning "stream caster is experiment feature."