[Qemu-devel] [PATCH 01/10] Add spent time to migration

[Juan Quintela]

From: Juan Quintela <address@hidden>

When printing debug information for migration, print total time spent.

Signed-off-by: Juan Quintela <address@hidden>
Signed-off-by: Juan Quintela <address@hidden>
---
 migration.c |   13 +++++++++++++
 1 files changed, 13 insertions(+), 0 deletions(-)

diff --git a/migration.c b/migration.c
index 9ee8b17..4786406 100644
--- a/migration.c
+++ b/migration.c
@@ -26,9 +26,16 @@
 #ifdef DEBUG_MIGRATION
 #define DPRINTF(fmt, ...) \
     do { printf("migration: " fmt, ## __VA_ARGS__); } while (0)
+static int64_t start, stop;
+#define START_MIGRATION_CLOCK()        do { start = qemu_get_clock(rt_clock); 
} while (0)
+#define STOP_MIGRATION_CLOCK() \
+       do { stop = qemu_get_clock(rt_clock) - start; \
+       } while (0)
 #else
 #define DPRINTF(fmt, ...) \
     do { } while (0)
+#define START_MIGRATION_CLOCK()        do {} while (0)
+#define STOP_MIGRATION_CLOCK() do {} while (0)
 #endif

 /* Migration speed throttling */
@@ -88,6 +95,7 @@ int do_migrate(Monitor *mon, const QDict *qdict, QObject 
**ret_data)
         return -1;
     }

+    START_MIGRATION_CLOCK();
     if (strstart(uri, "tcp:", &p)) {
         s = tcp_start_outgoing_migration(mon, p, max_throttle, detach,
                                          blk, inc);
@@ -127,6 +135,8 @@ int do_migrate_cancel(Monitor *mon, const QDict *qdict, 
QObject **ret_data)
     if (s)
         s->cancel(s);

+    STOP_MIGRATION_CLOCK();
+    DPRINTF("canceled after %lu milliseconds\n", stop);
     return 0;
 }

@@ -378,6 +388,9 @@ void migrate_fd_put_ready(void *opaque)
         } else {
             state = MIG_STATE_COMPLETED;
         }
+       STOP_MIGRATION_CLOCK();
+       DPRINTF("ended after %lu milliseconds\n", stop);
+
         if (migrate_fd_cleanup(s) < 0) {
             if (old_vm_running) {
                 vm_start();
-- 
1.7.3.2