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[Qemu-devel] [PATCH 2/7] migration: Add counters of updating the dirty b
From: |
Gonglei (Arei) |
Subject: |
[Qemu-devel] [PATCH 2/7] migration: Add counters of updating the dirty bitmap |
Date: |
Fri, 28 Feb 2014 04:08:37 +0000 |
Add counters to log the times of updating the dirty bitmap.
Signed-off-by: ChenLiang <address@hidden>
Signed-off-by: Gonglei <address@hidden>
---
arch_init.c | 20 ++++++++++++++++++++
1 file changed, 20 insertions(+)
diff --git a/arch_init.c b/arch_init.c
index bc8d0eb..6823c5a 100644
--- a/arch_init.c
+++ b/arch_init.c
@@ -110,6 +110,23 @@ static bool mig_throttle_on;
static int dirty_rate_high_cnt;
static void check_guest_throttling(void);
+static uint64_t bitmap_sync_cnt;
+/* the functions *_bitmap_sync_cnt only run in migrate thread */
+static inline void reset_bitmap_sync_cnt(void)
+{
+ bitmap_sync_cnt = 0;
+}
+
+static inline void increase_bitmap_sync_cnt(void)
+{
+ bitmap_sync_cnt++;
+}
+
+static inline uint64_t get_bitmap_sync_cnt(void)
+{
+ return bitmap_sync_cnt;
+}
+
/***********************************************************/
/* ram save/restore */
@@ -450,6 +467,8 @@ static void migration_bitmap_sync(void)
int64_t end_time;
int64_t bytes_xfer_now;
+ increase_bitmap_sync_cnt();
+
if (!bytes_xfer_prev) {
bytes_xfer_prev = ram_bytes_transferred();
}
@@ -692,6 +711,7 @@ static int ram_save_setup(QEMUFile *f, void *opaque)
migration_dirty_pages = ram_pages;
mig_throttle_on = false;
dirty_rate_high_cnt = 0;
+ reset_bitmap_sync_cnt();
if (migrate_use_xbzrle()) {
XBZRLE.cache = cache_init(migrate_xbzrle_cache_size() /
--
1.7.12.4
Best regards,
-Gonglei
- [Qemu-devel] [PATCH 2/7] migration: Add counters of updating the dirty bitmap,
Gonglei (Arei) <=