qa: Added latency to results table in test_rbd_wnbd.py

Added data regarding completion latency (ns) to the fio results
table, such as min, max, mean, stddev, etc.

Signed-off-by: Stefan Chivu <schivu@cloudbasesolutions.com>

diff --git a/qa/workunits/windows/test_rbd_wnbd.py b/qa/workunits/windows/test_rbd_wnbd.py
index b64b9fc639baa5680d43df2338b3db6b612ba424..c749957cf65501e2eb9e1e8112a40a9ff6528a90 100644 (file)
--- a/qa/workunits/windows/test_rbd_wnbd.py
+++ b/qa/workunits/windows/test_rbd_wnbd.py
@@ -587,6 +587,16 @@ class RbdFioTest(RbdTest):
                             'total_ios': job[op]['short_ios'],
                             'short_ios': job[op]['short_ios'],
                             'dropped_ios': job[op]['short_ios'],
+                            'clat_ns_min': job[op]['clat_ns']['min'],
+                            'clat_ns_max': job[op]['clat_ns']['max'],
+                            'clat_ns_mean': job[op]['clat_ns']['mean'],
+                            'clat_ns_stddev': job[op]['clat_ns']['stddev'],
+                            'clat_ns_10': job[op].get('clat_ns', {})
+                                                 .get('percentile', {})
+                                                 .get('10.000000', 0),
+                            'clat_ns_90': job[op].get('clat_ns', {})
+                                                 .get('percentile', {})
+                                                 .get('90.000000', 0)
                         })
 
     def _get_fio_path(self):
@@ -598,7 +608,7 @@ class RbdFioTest(RbdTest):
         cmd = [
             "fio", "--thread", "--output-format=json",
             "--randrepeat=%d" % self.iterations,
-            "--direct=1", "--gtod_reduce=1", "--name=test",
+            "--direct=1", "--name=test",
             "--bs=%s" % self.bs, "--iodepth=%s" % self.iodepth,
             "--size=%sM" % (fio_size_mb or self.fio_size_mb),
             "--readwrite=%s" % self.op,
@@ -662,6 +672,19 @@ class RbdFioTest(RbdTest):
                            s['min'], s['max'], s['mean'],
                            s['median'], s['std_dev'],
                            s['max_90'], s['min_90'], s['sum']])
+
+            clat_min = array_stats([i["clat_ns_min"] for i in op_data])
+            clat_max = array_stats([i["clat_ns_max"] for i in op_data])
+            clat_mean = array_stats([i["clat_ns_mean"] for i in op_data])
+            clat_stddev = math.sqrt(
+                sum([float(i["clat_ns_stddev"]) ** 2 for i in op_data]) / len(op_data)
+                if len(op_data) else 0)
+            clat_10 = array_stats([i["clat_ns_10"] for i in op_data])
+            clat_90 = array_stats([i["clat_ns_90"] for i in op_data])
+            table.add_row(["completion latency (ns)",
+                           clat_min['min'], clat_max['max'], clat_mean['mean'],
+                           clat_mean['median'], clat_stddev,
+                           clat_10['mean'], clat_90['mean'], clat_mean['sum']])
             print(table)