per-LRU hits breakdown

no actual speed loss. emulate the slab_stats "get_hits" by totalling up the
per-LRU get_hits.

could sub-LRU many stats but should use a different command/interface for
that.

1 files changed, 9 insertions, 0 deletions

diff --git a/thread.c b/thread.c
index 0656cb5..646b235 100644
--- a/thread.c
+++ b/thread.c
@@ -641,6 +641,8 @@ void threadlocal_stats_reset(void) {
 
         memset(&threads[ii].stats.slab_stats, 0,
                 sizeof(threads[ii].stats.slab_stats));
+        memset(&threads[ii].stats.lru_hits, 0,
+                sizeof(uint64_t) * POWER_LARGEST);
 
         pthread_mutex_unlock(&threads[ii].stats.mutex);
     }
@@ -666,6 +668,13 @@ void threadlocal_stats_aggregate(struct thread_stats *stats) {
 #undef X
         }
 
+        for (sid = 0; sid < POWER_LARGEST; sid++) {
+            stats->lru_hits[sid] +=
+                threads[ii].stats.lru_hits[sid];
+            stats->slab_stats[CLEAR_LRU(sid)].get_hits +=
+                threads[ii].stats.lru_hits[sid];
+        }
+
         pthread_mutex_unlock(&threads[ii].stats.mutex);
     }
 }