+ return ret;
+
+ return do_write(ff, &evlist->last_sample_time,
+ sizeof(evlist->last_sample_time));
+}
+
static void print_hostname(struct feat_fd *ff, FILE *fp)
{
fprintf(fp, "# hostname : %s\n", ff->ph->env.hostname);
@@ -1506,6 +1520,19 @@ static void print_group_desc(struct feat_fd *ff, FILE *fp)
}
}
+static void print_sample_time(struct feat_fd *ff, FILE *fp)
+{
+ struct perf_session *session;
+
+ session = container_of(ff->ph, struct perf_session, header);
+
+ fprintf(fp, "# time of first sample : %" PRIu64 "\n",
+ session->evlist->first_sample_time);
+
+ fprintf(fp, "# time of last sample : %" PRIu64 "\n",
+ session->evlist->last_sample_time);
On Thu, Sep 28, 2017 at 08:45:16PM +0800, Jin Yao wrote:
SNIP
+ return ret;
+
+ return do_write(ff, &evlist->last_sample_time,
+ sizeof(evlist->last_sample_time));
+}
+
static void print_hostname(struct feat_fd *ff, FILE *fp)
{
fprintf(fp, "# hostname : %s\n", ff->ph->env.hostname);
@@ -1506,6 +1520,19 @@ static void print_group_desc(struct feat_fd *ff, FILE *fp)
}
}
+static void print_sample_time(struct feat_fd *ff, FILE *fp)
+{
+ struct perf_session *session;
+
+ session = container_of(ff->ph, struct perf_session, header);
+
+ fprintf(fp, "# time of first sample : %" PRIu64 "\n",
+ session->evlist->first_sample_time);
+
+ fprintf(fp, "# time of last sample : %" PRIu64 "\n",
+ session->evlist->last_sample_time);
this could be done in some follow up patch, but could we
display this in some human readable way..
# time of first sample : 218077073264620
# time of last sample : 218077073395488
jirka
On 10/2/2017 7:50 PM, Jiri Olsa wrote:
On Thu, Sep 28, 2017 at 08:45:16PM +0800, Jin Yao wrote:
SNIP
+ return ret;
+
+ return do_write(ff, &evlist->last_sample_time,
+ sizeof(evlist->last_sample_time));
+}
+
static void print_hostname(struct feat_fd *ff, FILE *fp)
{
fprintf(fp, "# hostname : %s\n", ff->ph->env.hostname);
@@ -1506,6 +1520,19 @@ static void print_group_desc(struct feat_fd *ff, FILE *fp)
}
}
+static void print_sample_time(struct feat_fd *ff, FILE *fp)
+{
+ struct perf_session *session;
+
+ session = container_of(ff->ph, struct perf_session, header);
+
+ fprintf(fp, "# time of first sample : %" PRIu64 "\n",
+ session->evlist->first_sample_time);
+
+ fprintf(fp, "# time of last sample : %" PRIu64 "\n",
+ session->evlist->last_sample_time);
this could be done in some follow up patch, but could we
display this in some human readable way..
# time of first sample : 218077073264620
# time of last sample : 218077073395488
jirka
Could I add the printing of duration? For example,
duration = (double)(last_sample_time - first_sample_time) / NSEC_PER_MSEC; fprintf(fp, "# sample duration: %10.3f (ms)\n", duration);
fprintf(fp, "# time of first sample : %" PRIu64 "\n",
first_sample_time);
fprintf(fp, "# time of last sample : %" PRIu64 "\n",
last_sample_time);
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