STATISTICS: Add tracking of the 10 hottest keys per database measured in hopcount

[ctdb.git] / tools / ctdb.c

diff --git a/tools/ctdb.c b/tools/ctdb.c
index a3bcd6e44fccfa8172820c5c400e30cd55dcca12..07a47db21eddb815579621fb7cbbf9f1791452f4 100644 (file)
--- a/tools/ctdb.c
+++ b/tools/ctdb.c
@@ -619,6 +619,15 @@ static int control_dbstatistics(struct ctdb_context *ctdb, int argc, const char
                printf(" %d", dbstatistics->hop_count_bucket[i]);
        }
        printf("\n");
+       printf("Num Hot Keys:     %d\n", dbstatistics->num_hot_keys);
+       for (i = 0; i < dbstatistics->num_hot_keys; i++) {
+               int j;
+               printf("Count:%d Key:", dbstatistics->hot_keys[i].count);
+               for (j = 0; j < dbstatistics->hot_keys[i].key.dsize; j++) {
+                       printf("%02x", dbstatistics->hot_keys[i].key.dptr[j]&0xff);
+               }
+               printf("\n");
+       }
 
        ctdb_free_dbstat(dbstatistics);
        return 0;