Android性能测试指标的获取——cpu

harryhappy · 发表于 2016-9-27 20:23:14

0. 手机硬件信息
1. CPU 相关
1.1 dumpsys cpuinfo
1.2 cat /proc/pid/stat
1.3 cat /proc/stat
1.4 cat /proc/cpuinfo
1.5 根据cpu时间片计算应用cpu使用率
1.6 通过top命令获取应用cpu使用率（kat使用方式）
1.7  获取cpu核数
2. 内存相关
2.1 最大内存限制
2.2 获得内存相关信息 cat /proc/meminfo
2.3  MemoryInfo
2.4 通过dumpsys meminfo + pkgname（kat采用方式）
3. 流量
3.1 单个app流量（uid）
4. 帧率
4.1 帧率获取方式
4.2 获取TopActivity
5. 温度
5.1 cpu温度获取方式
5.2 电池温度获取

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硬件环境为：三星  SM-A3000
0. 手机硬件信息
手机硬件是影响性能数据的关键影响因素。
性能评估应该在设备硬件信息的基础上进行。

1. CPU 相关
1.1  dumpsys cpuinfo
shell@a3ltechn:/ $ dumpsys cpuinfo
Load: 5.6 / 4.76 / 4.6
CPU usage from 16693ms to 9622ms ago:
  19% 314/adbd: 2.5% user + 16% kernel / faults: 54 minor
  6.6% 14372/kworker/2:0: 0% user + 6.6% kernel
  4.2% 13893/com.tencent.wstt.gt: 4.1% user + 0.1% kernel / faults: 76 minor
  4.2% 14111/kworker/1:0: 0% user + 4.2% kernel
  2.5% 834/system_server: 1.5% user + 0.9% kernel / faults: 35 minor 2 major
  1.4% 13670/kworker/0:1: 0% user + 1.4% kernel
  1.2% 235/surfaceflinger: 0.1% user + 1.1% kernel
  0.9% 1128/com.android.systemui: 0.8% user + 0.1% kernel / faults: 18 minor
  0.8% 537/com.kingroot.kinguser:service: 0.7% user + 0.1% kernel / faults: 209minor
  0.8% 5237/com.tencent.android.qqdownloader:connect: 0.2% user + 0.5% kernel /faults: 187 minor 70 major
  0.1% 1//init: 0% user + 0.1% kernel / faults: 66 minor
  0.2% 425/kuInotify: 0% user + 0.2% kernel
  0.1% 620/sh: 0% user + 0.1% kernel / faults: 308 minor
  0.2% 2435/mpdecision: 0% user + 0.2% kernel
  0.2% 3876/com.tencent.qqmusic

QPlayerService: 0.1% user + 0.1% kernel / faults: 2 minor
  0.2% 5253/com.tencent.android.qqdownloader: 0.2% user + 0% kernel / faults: 2minor
  0.2% 7153/android.process.media: 0.1% user + 0.1% kernel / faults: 20 minor
  0.2% 11580/kworker/u8:2: 0% user + 0.2% kernel
  0% 3/ksoftirqd/0: 0% user + 0% kernel
  0% 12/ksoftirqd/1: 0% user + 0% kernel
  0.1% 33/kworker/u9:0: 0% user + 0.1% kernel
  0.1% 155/mmcqd/0: 0% user + 0.1% kernel
  0.1% 492/mdss_fb0: 0% user + 0.1% kernel
  0.1% 1497/com.sec.android.provider.logsprovider: 0.1% user + 0% kernel / faults: 21 minor 14 major
  0% 2385/com.tencent.map:xg_service_v2: 0% user + 0% kernel / faults: 7 minor
  0% 3475/com.tencent.qqmusic: 0% user + 0% kernel / faults: 33 minor
  0% 4481/com.tencent.map: 0% user + 0% kernel / faults: 3 minor
  0.1% 14265/kworker/u8:3: 0% user + 0.1% kernel
  0.1% 24649/kworker/0:1H: 0% user + 0.1% kernel
+0% 14501/logcat: 0% user + 0% kernel
+0% 14531/sh: 0% user + 0% kernel
24% TOTAL: 10% user + 14% kernel + 0% iowait + 0% softirq

1.2  cat /proc/pid/stat
shell@a3ltechn:/ $ cat /proc/13893/stat
13893    (tencent.wstt.gt)          S             236          236          0             0          -1          1077936448             32761          1869 562          0
6171（13）          798（14）             14             20          0          35             0             53677782 625696768 12152 4294967295 1 1 0 0 0 0 4612 0 38136 4294967 295 0 0 17 0 0 0 0 0 0 0 0 0 0 0 0 0 0

大家都是用13  14 作为本app使用的时间片

1.3 cat /proc/stat
第一行数据表示cpu的总得使用情况
接着cpu0、cpu1、cpu2、cpu3 表示cpu为四核
第一行的数值表示的是CPU总的使用情况，所以我们只要用第一行的数字计算就可以了。下表解析第一行各数值的含义：
参数       解析（单位：jiffies）
(jiffies是内核中的一个全局变量，用来记录自系统启动一来产生的节拍数，在linux中，一个节拍大致可理解为操作系统进程调度的最小时间片，不同linux内核可能值有不同，通常在1ms到10ms之间)
user ( 15579 ) 从系统启动开始累计到当前时刻，处于用户态的运行时间，不包含 nice值为负进程。
nice (99)    从系统启动开始累计到当前时刻，nice值为负的进程所占用的CPU时间
system (13680)  从系统启动开始累计到当前时刻，处于核心态的运行时间
idle (698457) 从系统启动开始累计到当前时刻，除IO等待时间以外的其它等待时间
iowait (10939) 从系统启动开始累计到当前时刻，IO等待时间(since 2.5.41)
irq (40)          从系统启动开始累计到当前时刻，硬中断时间(since 2.6.0-test4)
softirq (651)    从系统启动开始累计到当前时刻，软中断时间(since 2.6.0-test4)
stealstolen(0)    which is the time spent in other operating systems when running in a virtualized environment(since 2.6.11)
guest(0)       which is the time spent running a virtual  CPU  for  guest operating systems under the control of the Linux kernel(since 2.6.24)
结论：总的cpu时间totalCpuTime = user + nice + system + idle + iowait + irq + softirq + stealstolen +guest
通过 idle 是cpu空闲时间可以计算出整个cpu的使用率。

(totalCpuTime2 -idle2)-(totalCpuTime1 -idle1) / （totalCpuTime2 - totalCpuTime1）

2|shell@a3ltechn:/proc $ cat stat
cpu  1865179 110769 2171734 28665447 122413 371 59060 0 0 0
cpu0 1234985 64059 1622254 28326111 111975 321 48131 0 0 0
cpu1 356972 27039 303011 33268 42 27 6651 0 0 0
cpu2 228497 15037 211115 33486 93 17 3090 0 0 0
cpu3 44725 4634 35354 272582 10303 6 1188 0 0 0
intr 127334512 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 51107631 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 5886484 0 0 0 0 0 0 0 35 0 0 0 0 0 0 0 0 0 636925 6 5 0 10 0 0 0 1371974 0 0 0 0 0 0 0 0 0 0 0 0 0 0
0 0 0 0 0 0 0 0 0 0 0 0 0 5262657 0 435617 0 0 0 0 0 0 0 0 22020533 0 0 0 17379 0 0 0 203011 5 0 1454005 943548 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 5326760 0 0 1815556 0 0 0 0 0 0 0 0 0 0 0 0 0
0 0 0 0 70 4 0 2 22333 0 0 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 178941 17 0 0 0 0 0 0 0 0 379 0 0 0 0 0 0 0 0 0 0 0 0 0 0 773 492 0 59 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 117 5 0
ctxt 342316223
btime 1455761173
processes 1145328
procs_running 2
procs_blocked 0
softirq 49561716 93738 13218862 144172 305576 93738 93738 3878678 7708098 13938 24011178

1.4 cat /proc/cpuinfo
shell@a3ltechn:/proc $ cat cpuinfo
processor    : 0
model name    : ARMv7 Processor rev 0 (v7l)
BogoMIPS       : 38.40
Features       : swp half thumb fastmult vfp edsp neon vfpv3 tls vfpv4 idiva idivt
CPU implementer : 0x41
CPU architecture: 7
CPU variant    : 0x0
CPU part       : 0xd03
CPU revision : 0

processor    : 1
model name    : ARMv7 Processor rev 0 (v7l)
BogoMIPS       : 38.40
Features       : swp half thumb fastmult vfp edsp neon vfpv3 tls vfpv4 idiva idivt
CPU implementer : 0x41
CPU architecture: 7
CPU variant    : 0x0
CPU part       : 0xd03
CPU revision : 0

processor    : 2
model name    : ARMv7 Processor rev 0 (v7l)
BogoMIPS       : 38.40
Features       : swp half thumb fastmult vfp edsp neon vfpv3 tls vfpv4 idiva idivt
CPU implementer : 0x41
CPU architecture: 7
CPU variant    : 0x0
CPU part       : 0xd03
CPU revision : 0

processor    : 3
model name    : ARMv7 Processor rev 0 (v7l)
BogoMIPS       : 38.40
Features       : swp half thumb fastmult vfp edsp neon vfpv3 tls vfpv4 idiva idivt
CPU implementer : 0x41
CPU architecture: 7
CPU variant    : 0x0
CPU part       : 0xd03
CPU revision : 0

Hardware       : Qualcomm Technologies, Inc MSM8916
Revision       : 0006
Serial       : 000007610000e054
Processor    : ARMv7 Processor rev 0 (v7l)
1.5 根据cpu时间片计算应用cpu使用率
cpu时间片总和：  allCpu
/proc/stat  读取所有时间片，累加

process对应时间片：processCpu
读取/proc/pid/stat 的时间片读取13 、 14 列  累加

(processCpu2 - processCpu1) / (allCpu2-allCpu 1)

1.6 通过top命令获取应用cpu使用率（kat使用方式）

1.7  获取cpu核数
https://github.com/facebook/devi ... ass/DeviceInfo.java
/**
* Reads the number of CPU cores from {@code /sys/devices/system/cpu/}.
*
* @return Number of CPU cores in the phone, or DEVICEINFO_UKNOWN = -1 in the event of an error.
*/
public static int getNumberOfCPUCores() {
if (Build.VERSION.SDK_INT <= Build.VERSION_CODES.GINGERBREAD_MR1) {
// Gingerbread doesn't support giving a single application access to both cores, but a
      // handful of devices (Atrix 4G and Droid X2 for example) were released with a dual-core
      // chipset and Gingerbread; that can let an app in the background run without impacting
      // the foreground application. But for our purposes, it makes them single core.
return 1;
}
int cores;
try {
      cores = new File("/sys/devices/system/cpu/").listFiles(CPU_FILTER).length;
} catch (SecurityException e) {
      cores = DEVICEINFO_UNKNOWN;
} catch (NullPointerException e) {
      cores = DEVICEINFO_UNKNOWN;
}
return cores;
}

private static final FileFilter CPU_FILTER = new FileFilter() {
@Override
public boolean accept(File pathname) {
      String path = pathname.getName();
//regex is slow, so checking char by char.
if (path.startsWith("cpu")) {
for (int i = 3; i < path.length(); i++) {
if (!Character.isDigit(path.charAt(i))) {
return false;
            }
         }
return true;
      }
return false;
}
};