[Qemu-devel] [PATCH] Add dirty-bytes-rate to output in 'info migrate'

[Chao Fan]

Because 'dirty-bytes-rate' is in 'bytes/s', so it's better for other
tools to determine the cpu throttle value in different architecture.

Signed-off-by: Chao Fan <address@hidden>
Signed-off-by: Li Zhijian <address@hidden>
---
 hmp.c                 | 6 +++++-
 migration/migration.c | 1 +
 qapi-schema.json      | 5 ++++-
 3 files changed, 10 insertions(+), 2 deletions(-)

diff --git a/hmp.c b/hmp.c
index 261843f..c50d7aa 100644
--- a/hmp.c
+++ b/hmp.c
@@ -216,9 +216,13 @@ void hmp_info_migrate(Monitor *mon, const QDict *qdict)
         monitor_printf(mon, "dirty sync count: %" PRIu64 "\n",
                        info->ram->dirty_sync_count);
         if (info->ram->dirty_pages_rate) {
-            monitor_printf(mon, "dirty pages rate: %" PRIu64 " pages\n",
+            monitor_printf(mon, "dirty pages rate: %" PRIu64 " pages/s\n",
                            info->ram->dirty_pages_rate);
         }
+        if (info->ram->dirty_bytes_rate) {
+            monitor_printf(mon, "dirty bytes rate: %" PRIu64 " bytes/s\n",
+                           info->ram->dirty_bytes_rate);
+        }
         if (info->ram->postcopy_requests) {
             monitor_printf(mon, "postcopy request count: %" PRIu64 "\n",
                            info->ram->postcopy_requests);
diff --git a/migration/migration.c b/migration/migration.c
index 3dab684..27f13c7 100644
--- a/migration/migration.c
+++ b/migration/migration.c
@@ -649,6 +649,7 @@ static void populate_ram_info(MigrationInfo *info, 
MigrationState *s)
     if (s->state != MIGRATION_STATUS_COMPLETED) {
         info->ram->remaining = ram_bytes_remaining();
         info->ram->dirty_pages_rate = s->dirty_pages_rate;
+        info->ram->dirty_bytes_rate = s->dirty_bytes_rate;
     }
 }
 
diff --git a/qapi-schema.json b/qapi-schema.json
index 32b4a4b..0d5ec8e 100644
--- a/qapi-schema.json
+++ b/qapi-schema.json
@@ -575,6 +575,9 @@
 # @postcopy-requests: The number of page requests received from the destination
 #        (since 2.7)
 #
+# @dirty-bytes-rate: how many bytes dirtied by second by the
+#        guest (since 2.9)
+#
 # Since: 0.14.0
 ##
 { 'struct': 'MigrationStats',
@@ -582,7 +585,7 @@
            'duplicate': 'int', 'skipped': 'int', 'normal': 'int',
            'normal-bytes': 'int', 'dirty-pages-rate' : 'int',
            'mbps' : 'number', 'dirty-sync-count' : 'int',
-           'postcopy-requests' : 'int' } }
+           'postcopy-requests' : 'int', 'dirty-bytes-rate' : 'int' } }
 
 ##
 # @XBZRLECacheStats:
-- 
2.9.3