Re: [Qemu-devel] [PATCH] migration: show average throughput when migration finishes

[Paolo Bonzini <pbonzini@redhat.com>]

Il 12/05/2014 10:46, Peter Lieven ha scritto:
> currently the value of the throughput field contains whatever
> was the last calculated throughput shortly before the migration
> finished.
>
> This patch updates the post migration contents of the field to
> the average throughput.
>
> Signed-off-by: Peter Lieven <pl@kamp.de>
>
> diff --git a/migration.c b/migration.c
> index 52cda27..3fc03d6 100644
> --- a/migration.c
> +++ b/migration.c
> @@ -662,8 +662,13 @@ static void *migration_thread(void *opaque)
>      qemu_mutex_lock_iothread();
>      if (s->state == MIG_STATE_COMPLETED) {
>          int64_t end_time = qemu_clock_get_ms(QEMU_CLOCK_REALTIME);
> +        uint64_t transferred_bytes = qemu_ftell(s->file);
>          s->total_time = end_time - s->total_time;
>          s->downtime = end_time - start_time;
> +        if (s->total_time) {
> +            s->mbps = (((double) transferred_bytes * 8.0) /
> +                       ((double) s->total_time)) / 1000;
> +        }
>          runstate_set(RUN_STATE_POSTMIGRATE);
>      } else {
>          if (old_vm_running) {
>

Reviewed-by: Paolo Bonzini <pbonzini@redhat.com>