perf kvm: Add min and max stats to display (62d04dbf) · Commits · 戴 / test

tools/perf/builtin-kvm.c

+17 −4

Original line number	Diff line number	Diff line
		@@ -337,14 +337,19 @@ static void clear_events_cache_stats(struct list_head *kvm_events_cache)
		struct list_head *head;
		struct kvm_event *event;
		unsigned int i;
		int j;

		for (i = 0; i < EVENTS_CACHE_SIZE; i++) {
		head = &kvm_events_cache[i];
		list_for_each_entry(event, head, hash_entry) {
		/* reset stats for event */
		memset(&event->total, 0, sizeof(event->total));
		memset(event->vcpu, 0,
		event->max_vcpu * sizeof(*event->vcpu));
		event->total.time = 0;
		init_stats(&event->total.stats);

		for (j = 0; j < event->max_vcpu; ++j) {
		event->vcpu[j].time = 0;
		init_stats(&event->vcpu[j].stats);
		}
		}
		}
		}
		@@ -583,6 +588,8 @@ static int compare_kvm_event_ ## func(struct kvm_event *one, \
		GET_EVENT_KEY(time, time);
		COMPARE_EVENT_KEY(count, stats.n);
		COMPARE_EVENT_KEY(mean, stats.mean);
		GET_EVENT_KEY(max, stats.max);
		GET_EVENT_KEY(min, stats.min);

		#define DEF_SORT_NAME_KEY(name, compare_key) \
		{ #name, compare_kvm_event_ ## compare_key }
		@@ -727,20 +734,26 @@ static void print_result(struct perf_kvm_stat *kvm)
		pr_info("%9s ", "Samples%");

		pr_info("%9s ", "Time%");
		pr_info("%10s ", "Min Time");
		pr_info("%10s ", "Max Time");
		pr_info("%16s ", "Avg time");
		pr_info("\n\n");

		while ((event = pop_from_result(&kvm->result))) {
		u64 ecount, etime;
		u64 ecount, etime, max, min;

		ecount = get_event_count(event, vcpu);
		etime = get_event_time(event, vcpu);
		max = get_event_max(event, vcpu);
		min = get_event_min(event, vcpu);

		kvm->events_ops->decode_key(kvm, &event->key, decode);
		pr_info("%20s ", decode);
		pr_info("%10llu ", (unsigned long long)ecount);
		pr_info("%8.2f%% ", (double)ecount / kvm->total_count * 100);
		pr_info("%8.2f%% ", (double)etime / kvm->total_time * 100);
		pr_info("%8" PRIu64 "us ", min / 1000);
		pr_info("%8" PRIu64 "us ", max / 1000);
		pr_info("%9.2fus ( +-%7.2f%% )", (double)etime / ecount/1e3,
		kvm_event_rel_stddev(vcpu, event));
		pr_info("\n");

Admin message