diff options
Diffstat (limited to 'migration')
| -rw-r--r-- | migration/ram.c | 17 |
1 files changed, 10 insertions, 7 deletions
diff --git a/migration/ram.c b/migration/ram.c index 36bf720c27..495ecbe492 100644 --- a/migration/ram.c +++ b/migration/ram.c @@ -694,6 +694,10 @@ static void migration_bitmap_sync(RAMState *rs) /* more than 1 second = 1000 millisecons */ if (end_time > rs->time_last_bitmap_sync + 1000) { + /* calculate period counters */ + rs->dirty_pages_rate = rs->num_dirty_pages_period * 1000 + / (end_time - rs->time_last_bitmap_sync); + if (migrate_auto_converge()) { /* The following detection logic can be refined later. For now: Check to see if the dirtied bytes is 50% more than the approx. @@ -702,15 +706,14 @@ static void migration_bitmap_sync(RAMState *rs) throttling */ bytes_xfer_now = ram_bytes_transferred(); - if (rs->dirty_pages_rate && - (rs->num_dirty_pages_period * TARGET_PAGE_SIZE > + if ((rs->num_dirty_pages_period * TARGET_PAGE_SIZE > (bytes_xfer_now - rs->bytes_xfer_prev) / 2) && - (rs->dirty_rate_high_cnt++ >= 2)) { + (rs->dirty_rate_high_cnt++ >= 2)) { trace_migration_throttle(); rs->dirty_rate_high_cnt = 0; mig_throttle_guest_down(); - } - rs->bytes_xfer_prev = bytes_xfer_now; + } + rs->bytes_xfer_prev = bytes_xfer_now; } if (migrate_use_xbzrle()) { @@ -723,8 +726,8 @@ static void migration_bitmap_sync(RAMState *rs) rs->iterations_prev = rs->iterations; rs->xbzrle_cache_miss_prev = rs->xbzrle_cache_miss; } - rs->dirty_pages_rate = rs->num_dirty_pages_period * 1000 - / (end_time - rs->time_last_bitmap_sync); + + /* reset period counters */ rs->time_last_bitmap_sync = end_time; rs->num_dirty_pages_period = 0; } |