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-rw-r--r--mico-sort.c3
1 files changed, 2 insertions, 1 deletions
diff --git a/mico-sort.c b/mico-sort.c
index 533eea5..9dc61dc 100644
--- a/mico-sort.c
+++ b/mico-sort.c
@@ -162,7 +162,8 @@ main()
 			v = metrics[m].value[i].v;
 
 			if (t == pt) {
-				fprintf(stderr, "duplicate timestamp: %ld", t);
+				fprintf(stderr, "duplicate timestamp: %s %ld\n",
+				    metrics[m].key, t);
 				continue;
 			}