* Gonglei (Arei) (arei.gong...@huawei.com) wrote:
> Add counters to log the times of updating the dirty bitmap.
Reviewed-by: Dr. David Alan Gilbert <dgilb...@redhat.com>
> Signed-off-by: ChenLiang <chenlian...@huawei.com>
> Signed-off-by: Gonglei <arei.gong...@huawei.com>
> ---
> 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
>
>
>
--
Dr. David Alan Gilbert / dgilb...@redhat.com / Manchester, UK
