numa_consistency: Update the threshold on ppc

Signed-off-by: NYihuang Yu <yihyu@redhat.com>

qemu/tests/cfg/numa.cfg

@@ -11,6 +11,9 @@
             only Linux
             type = numa_consistency
             start_vm = no
+            threshold = 0.05
+            ppc64,ppc64le:
+                threshold = 0.15
         - numa_stress:
             only Linux
             type = numa_stress

qemu/tests/numa_consistency.py

@@ -57,6 +57,7 @@ def run(test, params, env):
     vm.verify_alive()
     vcpu_threads = vm.vcpu_threads
     session = vm.wait_for_login(timeout=timeout)
+    threshold = params.get_numeric("threshold", target_type=float)
 
     dd_size = 256
     if dd_size * len(vcpu_threads) > int(params['mem']):
@@ -97,7 +98,7 @@ def run(test, params, env):
         page_size = resource.getpagesize() / 1024
         memory_allocated = (memory_used_after -
                             memory_used_before) * page_size / 1024
-        if 1 - float(memory_allocated) / float(dd_size) > 0.05:
+        if 1 - float(memory_allocated) / float(dd_size) > threshold:
             numa_hardware_cmd = params.get("numa_hardware_cmd")
             if numa_hardware_cmd:
                 numa_info = process.system_output(numa_hardware_cmd,