migration: show average throughput when migration finishes

currently the value of the throughput field contains whatever
was the last calculated throughput shortly before the migration
finished.

This patch updates the post migration contents of the field to
the average throughput.

Signed-off-by: Peter Lieven <pl@kamp.de>
Reviewed-by: Paolo Bonzini <pbonzini@redhat.com>
Reviewed-by: Juan Quintela <quintela@redhat.com>
Signed-by: Juan Quintela <quintela@redhat.com>
Signed-off-by: Juan Quintela <quintela@redhat.com>

diff --git a/migration.c b/migration.c
index 52cda279afe2e58281e379da2c7ad90d2bc26bf1..3fc03d6687357091653a802744edd1f6c46478c7 100644 (file)
--- a/migration.c
+++ b/migration.c
@@ -662,8 +662,13 @@ static void *migration_thread(void *opaque)
     qemu_mutex_lock_iothread();
     if (s->state == MIG_STATE_COMPLETED) {
         int64_t end_time = qemu_clock_get_ms(QEMU_CLOCK_REALTIME);
+        uint64_t transferred_bytes = qemu_ftell(s->file);
         s->total_time = end_time - s->total_time;
         s->downtime = end_time - start_time;
+        if (s->total_time) {
+            s->mbps = (((double) transferred_bytes * 8.0) /
+                       ((double) s->total_time)) / 1000;
+        }
         runstate_set(RUN_STATE_POSTMIGRATE);
     } else {
         if (old_vm_running) {