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Commit b048a24c authored by Christian Borntraeger's avatar Christian Borntraeger Committed by Arnaldo Carvalho de Melo
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perf kvm stat: Properly show submicrosecond times 



For lots of exits the min time (and sometimes max) is 0 or 1. Lets
increase the accurancy similar to what the average field alread does.

Signed-off-by: default avatarChristian Borntraeger <borntraeger@de.ibm.com>
Acked-by: default avatarDavid Ahern <dsahern@gmail.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Paolo Bonzini <pbonzini@redhat.com>
Cc: kvm@vger.kernel.org
Link: http://lkml.kernel.org/r/1406805231-10675-2-git-send-email-borntraeger@de.ibm.com


Signed-off-by: default avatarArnaldo Carvalho de Melo <acme@redhat.com>
parent 972f393b

tools/perf/builtin-kvm.c

+4 −4
Original line number Diff line number Diff line
@@ -592,8 +592,8 @@ 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("%11s ", "Min Time");

	pr_info("%11s ", "Max Time");

	pr_info("%16s ", "Avg time");

	pr_info("\n\n");
@@ -610,8 +610,8 @@ static void print_result(struct perf_kvm_stat *kvm) 
		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 ", (double)min / 1e3);

		pr_info("%9.2fus ", (double)max / 1e3);

		pr_info("%9.2fus ( +-%7.2f%% )", (double)etime / ecount/1e3,

			kvm_event_rel_stddev(vcpu, event));

		pr_info("\n");