1 # Copyright (c) 2010 The Chromium OS Authors. All rights reserved. 2 # Use of this source code is governed by a BSD-style license that can be 3 # found in the LICENSE file. 4 5 import logging 6 7 from autotest_lib.client.bin import test, utils 8 from autotest_lib.client.common_lib import error 9 10 class hardware_MemoryTotalSize(test.test): 11 version = 1 12 13 def run_once(self): 14 # TODO(zmo@): this may not get total physical memory size on ARM 15 # or some x86 machines. 16 mem_size = utils.memtotal() 17 gb = mem_size / 1024.0 / 1024.0 18 self.write_perf_keyval({"gb_memory_total": gb}) 19 logging.info("MemTotal: %.3f GB" % gb) 20 21 # x86 and ARM SDRAM configurations differ significantly from each other. 22 # Use a value specific to the architecture. 23 # On x86, I see 1.85GiB (2GiB - reserved memory). 24 # On ARM, I see 0.72GiB (1GiB - 256MiB carveout). 25 cpuType = utils.get_cpu_arch() 26 limit = 1.65 27 if cpuType == "arm": 28 limit = 0.65 29 30 if gb <= limit: 31 raise error.TestFail("total system memory size < %.3f GB" % limit); 32
