1 files changed, 12 insertions, 0 deletions
diff --git a/migration/dirtyrate.h b/migration/dirtyrate.h
index 8707df852d..312debca6f 100644
--- a/migration/dirtyrate.h
+++ b/migration/dirtyrate.h
@@ -42,5 +42,17 @@ struct RamblockDirtyInfo {
     uint32_t *hash_result; /* array of hash result for sampled pages */
 };
 
+/*
+ * Store calculation statistics for each measure.
+ */
+struct DirtyRateStat {
+    uint64_t total_dirty_samples; /* total dirty sampled page */
+    uint64_t total_sample_count; /* total sampled pages */
+    uint64_t total_block_mem_MB; /* size of total sampled pages in MB */
+    int64_t dirty_rate; /* dirty rate in MB/s */
+    int64_t start_time; /* calculation start time in units of second */
+    int64_t calc_time; /* time duration of two sampling in units of second */
+};
+
 void *get_dirtyrate_thread(void *arg);
 #endif