~hyman <[email protected]> wrote:
> From: Hyman Huang(黄勇) <[email protected]>
>
> Extend query-migrate to provide throttle time and estimated
> ring full time with dirty-limit capability enabled, through which
> we can observe if dirty limit take effect during live migration.
>
> Signed-off-by: Hyman Huang(黄勇) <[email protected]>
> Signed-off-by: Markus Armbruster <[email protected]>
Nit for the resent.
> +int64_t dirtylimit_throttle_time_per_round(void);
> +int64_t dirtylimit_ring_full_time(void);
int64?
> @@ -267,7 +278,9 @@
> '*postcopy-blocktime' : 'uint32',
> '*postcopy-vcpu-blocktime': ['uint32'],
> '*compression': 'CompressionStats',
> - '*socket-address': ['SocketAddress'] } }
> + '*socket-address': ['SocketAddress'],
> + '*dirty-limit-throttle-time-per-round': 'int64',
> + '*dirty-limit-ring-full-time': 'int64'} }
int64
> +/* Return the max throttle time of each virtual CPU */
> +int64_t dirtylimit_throttle_time_per_round(void)
> +{
> + CPUState *cpu;
> + int64_t max = 0;
> +
> + CPU_FOREACH(cpu) {
> + if (cpu->throttle_us_per_full > max) {
> + max = cpu->throttle_us_per_full;
> + }
> + }
> +
> + return max;
> +}
s/int64_t/uint64_t/?
> +
> +/*
> + * Estimate average dirty ring full time of each virtaul CPU.
> + * Return -1 if guest doesn't dirty memory.
> + */
> +int64_t dirtylimit_ring_full_time(void)
> +{
> + CPUState *cpu;
> + uint64_t curr_rate = 0;
> + int nvcpus = 0;
> +
> + CPU_FOREACH(cpu) {
> + if (cpu->running) {
> + nvcpus++;
> + curr_rate += vcpu_dirty_rate_get(cpu->cpu_index);
> + }
> + }
> +
> + if (!curr_rate || !nvcpus) {
> + return -1;
What does -1 brings up that 0 don't?
i.e. returning 0 here would mean that nothing has been dirtied or that
we don't have any vcpus running, right?
Later, Juan.
