diff options
| author | David Ahern | 2013-08-05 21:41:35 -0400 |
|---|---|---|
| committer | Arnaldo Carvalho de Melo | 2013-08-07 17:35:38 -0300 |
| commit | 62d04dbf3652264157e646d93006b2d74cf1be93 (patch) | |
| tree | a9134c7d84606d7d2690f5697e25cae9a1b19058 /tools | |
| parent | 1afe1d148491069ef51ed69fa53b09e1cb3ec30d (diff) | |
perf kvm: Add min and max stats to display
Add max and min times for exit events.
v2: address Xiao's comment to use get_event function for pulling max and
min from stats struct similar to mean and count
Signed-off-by: David Ahern <dsahern@gmail.com>
Reviewed-by: Xiao Guangrong <xiaoguangrong@linux.vnet.ibm.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Runzhen Wang <runzhen@linux.vnet.ibm.com>
Cc: Xiao Guangrong <xiaoguangrong@linux.vnet.ibm.com>
Link: http://lkml.kernel.org/r/1375753297-69645-4-git-send-email-dsahern@gmail.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Diffstat (limited to 'tools')
| -rw-r--r-- | tools/perf/builtin-kvm.c | 21 |
1 files changed, 17 insertions, 4 deletions
diff --git a/tools/perf/builtin-kvm.c b/tools/perf/builtin-kvm.c index 29bfca78613e..b6595e932a7f 100644 --- a/tools/perf/builtin-kvm.c +++ b/tools/perf/builtin-kvm.c @@ -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"); |