How to detect android cpu speed?

Question

I would like to detect how fast is the device on which my Android application is running?

Is there any API to do it on Android? Or do I have to benchmark it by mysel

Answer 1

Based on @dogbane solution and this answer, this is my implementation to get the BogoMIPS value:

 /**
 * parse the CPU info to get the BogoMIPS.
 * 
 * @return the BogoMIPS value as a String
 */
public static String getBogoMipsFromCpuInfo(){
    String result = null;
    String cpuInfo = readCPUinfo();
    String[] cpuInfoArray =cpuInfo.split(":");
    for( int i = 0 ; i< cpuInfoArray.length;i++){
        if(cpuInfoArray[i].contains("BogoMIPS")){
            result = cpuInfoArray[i+1];
            break;
        }
    }
    if(result != null) result = result.trim();
    return result;
}

/**
 * @see {https://stackoverflow.com/a/3021088/3014036}
 *
 * @return the CPU info.
 */
public static String readCPUinfo()
{
    ProcessBuilder cmd;
    String result="";
    InputStream in = null;
    try{
        String[] args = {"/system/bin/cat", "/proc/cpuinfo"};
        cmd = new ProcessBuilder(args);
        Process process = cmd.start();
        in = process.getInputStream();
        byte[] re = new byte[1024];
        while(in.read(re) != -1){
            System.out.println(new String(re));
            result = result + new String(re);
        }
    } catch(IOException ex){
        ex.printStackTrace();
    } finally {
            try {
                if(in !=null)
                in.close();
            } catch (IOException e) {
                e.printStackTrace();
            }
    }
    return result;
}