参考：

一、压力测试

stressapptest：源码下载
http://mirror.its.dal.ca/debian/pool/main/s/stressapptest/

https://github.com/stressapptest/stressapptest

DDR内存测试

从上图可以看出StressTestUtils是和开发者打交道的最主要的类；

stressapptest Android代码位置 alps\external\stressapptest

将stressapptest push到system/bin目录下：

./stressapptest -s 86400 -m 4 -i 4 -c 4 -C 4 -M xxx
It is to stress test memory copy, invert, crc check for 1hour with 900Mb memory.
-s: number of second to run the application  测试时间
-m: number of memory copy threads to run  复制线程数  (Memory Copy)
-i: number of memory invert threads to run  反转线程数 (Invert Copy)
-c: CRC check  CRC校验                                 (Data Check)
-C: number of memory CPU stress threads to run    CPU压力线程数
-M: Megabytes of ram to run  尽可能测试最大的可用存储空间，（设置超过了memfree，就会被kill）

批量测试：

@echo off
set testTimeInsecond=1800
set mbytes=400
set threads=8

@echo off
echo CONNECTED....
:NOCONNECTED
@echo off

setlocal enabledelayedexpansion
set devices=
for /f "tokens=1,3,5,7,9,11,13,15,17 skip=1" %%t in ('adb devices') do (
set "devices=!devices! %%t"
)
echo devices
for %%d in (%devices%) DO adb -s %%d root
for %%d in (%devices%) DO start adb -s %%d shell stressapptest -s %testTimeInSecond% -M %mbytes% -m %threads% -W -l /sdcard/memtest.log
pause

二、内存宽带测试

参考：

https://blog.csdn.net/lux_veritas/article/details/24766015

https://zsmith.co/bandwidth.php#download

用于读写的数据块大小从128B逐渐增大到128MB，由于各级cache的大小不同，进行内存读写时，较小的数据块会存放在cache中，较大的数据块则会经过cache存放在主存中。所以，随着数据块大小的增加，在几个节点上带宽的大小会有明显的跳变，主要原因就是到达了各级cache的容量上限，而转向下层存储。bandwidth会将测试结果生成一个日志文件，一张图表，这种带宽的跳变在图表中有最直观的表现。如图，在32KB与4MB处带宽有明显的下降趋势

DDR内存测试

Download

Introduction

My program, called simply bandwidth, is an artificial benchmark primarily for measuring memory bandwidth on x86 and x86_64 based computers, useful for identifying weaknesses in a computer's memory subsystem, in the bus architecture, in the cache architecture and in the processor itself.

bandwidth also tests some libc functions and, under GNU/Linux, it attempts to test framebuffer memory access speed if the framebuffer device is available.

This program is open source and covered by the GPL license. Although I wrote it mainly for my own benefit, I am also providing it pro bono, i.e. for the public good.

DDR内存测试

一、压力测试

二、内存宽带测试

Introduction

相关推荐