How to use write_perf_keyval method in autotest

Best Python code snippet using autotest_python

nfs_perf.py

Source:nfs_perf.py

...183                           " dd cmd output:\n%s" % out)184            _, _, speed = tmp_list[0]185            speed = utils_misc.normalize_data_size(speed)186            result += "%016s|" % speed187            test.write_perf_keyval({"%s--%s" % (prefix, "write"): speed})188            # Get read test result.189            out = _do_read_test(blk_size, test_file)190            tmp_list = re.findall(speed_pattern, out)191            if not tmp_list:192                _clean_up(STEP_6)193                test.error("Could not get correct read result."194                           " dd cmd output:\n%s" % out)195            _, _, speed = tmp_list[0]196            speed = utils_misc.normalize_data_size(speed)197            result += "%016s" % speed198            test.write_perf_keyval({"%s--%s" % (prefix, "read"): speed})199            # Append result into result list.200            result_list.append(result)201    finally:202        try:203            result_file.write("\n".join(result_list))204        except (IOError, ValueError) as e:205            logging.error("Failed to write to result file,"206                          " error message:\n%s", e)...

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