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migration: Add dirty_pages_rate to query migrate output

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It indicates how many pages were dirtied during the last second.

Signed-off-by: Juan Quintela <quintela@redhat.com>
This commit is contained in:
Juan Quintela
2012-08-13 12:31:25 +02:00
parent c6bf8e0e0c
commit 8d017193e2
5 changed files with 31 additions and 2 deletions
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18
arch_init.c
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@ -369,6 +369,14 @@ static void migration_bitmap_sync(void)
RAMBlock *block;
ram_addr_t addr;
uint64_t num_dirty_pages_init = migration_dirty_pages;
MigrationState *s = migrate_get_current();
static int64_t start_time;
static int64_t num_dirty_pages_period;
int64_t end_time;
if (!start_time) {
start_time = qemu_get_clock_ms(rt_clock);
}
trace_migration_bitmap_sync_start();
memory_global_sync_dirty_bitmap(get_system_memory());
@ -385,6 +393,16 @@ static void migration_bitmap_sync(void)
}
trace_migration_bitmap_sync_end(migration_dirty_pages
- num_dirty_pages_init);
num_dirty_pages_period += migration_dirty_pages - num_dirty_pages_init;
end_time = qemu_get_clock_ms(rt_clock);
/* more than 1 second = 1000 millisecons */
if (end_time > start_time + 1000) {
s->dirty_pages_rate = num_dirty_pages_period * 1000
/ (end_time - start_time);
start_time = end_time;
num_dirty_pages_period = 0;
}
}