diff --git a/tools/gce/create_linux_worker.sh b/tools/gce/create_linux_worker.sh
index 322a592c073d27014b0aee18be774dcd21b5a219..b934f22a67316955595928b7372cb5dc24b09deb 100755
--- a/tools/gce/create_linux_worker.sh
+++ b/tools/gce/create_linux_worker.sh
@@ -45,7 +45,8 @@ gcloud compute instances create $INSTANCE_NAME \
     --machine-type n1-standard-16 \
     --image=ubuntu-1510 \
     --image-project=grpc-testing \
-    --boot-disk-size 1000
+    --boot-disk-size 1000 \
+    --scopes https://www.googleapis.com/auth/bigquery
 
 echo 'Created GCE instance, waiting 60 seconds for it to come online.'
 sleep 60
diff --git a/tools/run_tests/python_utils/jobset.py b/tools/run_tests/python_utils/jobset.py
index 4e97128d46717c74b3cc33e5b459ffa3e24dffdc..c1b1c88f550ac672719d6cb236401260620a1351 100755
--- a/tools/run_tests/python_utils/jobset.py
+++ b/tools/run_tests/python_utils/jobset.py
@@ -255,7 +255,7 @@ class Job(object):
     self._start = time.time()
     cmdline = self._spec.cmdline
     if measure_cpu_costs:
-      cmdline = ['time', '--portability'] + cmdline
+      cmdline = ['time', '-p'] + cmdline
     try_start = lambda: subprocess.Popen(args=cmdline,
                                          stderr=subprocess.STDOUT,
                                          stdout=self._tempfile,
@@ -307,7 +307,7 @@ class Job(object):
         self._state = _SUCCESS
         measurement = ''
         if measure_cpu_costs:
-          m = re.search(r'real ([0-9.]+)\nuser ([0-9.]+)\nsys ([0-9.]+)', stdout())
+          m = re.search(r'real\s+([0-9.]+)\nuser\s+([0-9.]+)\nsys\s+([0-9.]+)', stdout())
           real = float(m.group(1))
           user = float(m.group(2))
           sys = float(m.group(3))