Commit-ID: b048a24cc8f29dce1bad564aaeb8680020d3701c
Gitweb: http://git.kernel.org/tip/b048a24cc8f29dce1bad564aaeb8680020d3701c
Author: Christian Borntraeger <borntraeger@xxxxxxxxxx>
AuthorDate: Thu, 31 Jul 2014 13:13:51 +0200
Committer: Arnaldo Carvalho de Melo <acme@xxxxxxxxxx>
CommitDate: Sat, 2 Aug 2014 10:21:11 -0300
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: Christian Borntraeger <borntraeger@xxxxxxxxxx>
Acked-by: David Ahern <dsahern@xxxxxxxxx>
Cc: David Ahern <dsahern@xxxxxxxxx>
Cc: Jiri Olsa <jolsa@xxxxxxxxxx>
Cc: Paolo Bonzini <pbonzini@xxxxxxxxxx>
Cc: kvm@xxxxxxxxxxxxxxx
Link: http://lkml.kernel.org/r/1406805231-10675-2-git-send-email-borntraeger@xxxxxxxxxx
Signed-off-by: Arnaldo Carvalho de Melo <acme@xxxxxxxxxx>
---
tools/perf/builtin-kvm.c | 8 ++++----
1 file changed, 4 insertions(+), 4 deletions(-)
diff --git a/tools/perf/builtin-kvm.c b/tools/perf/builtin-kvm.c
index 43367eb..fe92dfd 100644
--- a/tools/perf/builtin-kvm.c
+++ b/tools/perf/builtin-kvm.c
@@ -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");
--
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