How to retrieve Running application CPU usage programmatically? : Android

Question

How to retrieve Running application sizes, CPU usage programmatically?

is it possible or not.

thanks

Rohit · Accepted Answer · 2013-02-19 11:41:34Z

1

private float readUsage() {
    try {
        RandomAccessFile reader = new RandomAccessFile("/proc/stat", "r");
        String load = reader.readLine();

        String[] toks = load.split(" ");

        long idle1 = Long.parseLong(toks[5]);
        long cpu1 = Long.parseLong(toks[2]) + Long.parseLong(toks[3]) + Long.parseLong(toks[4])
              + Long.parseLong(toks[6]) + Long.parseLong(toks[7]) + Long.parseLong(toks[8]);

        try {
            Thread.sleep(360);
        } catch (Exception e) {}

        reader.seek(0);
        load = reader.readLine();
        reader.close();

        toks = load.split(" ");

        long idle2 = Long.parseLong(toks[5]);
        long cpu2 = Long.parseLong(toks[2]) + Long.parseLong(toks[3]) + Long.parseLong(toks[4])
            + Long.parseLong(toks[6]) + Long.parseLong(toks[7]) + Long.parseLong(toks[8]);

        return (float)(cpu2 - cpu1) / ((cpu2 + idle2) - (cpu1 + idle1));

    } catch (IOException ex) {
        ex.printStackTrace();
    }

    return 0;
}

answered Feb 19, 2013 at 11:41

Rohit

7,21919 gold badges64 silver badges109 bronze badges

Sign up to request clarification or add additional context in comments.

4 Comments

saritha Over a year ago

i use this but i am confused what it returns is it total cpu usage or running app cpu usage and onmor thing is mb or kb

saritha Over a year ago

it returns mb or kb and can we find individual running applications cpu usage

Erum Over a year ago

@saritha have u successfully found individual running applications cpu usage can u pls tell how u calculate ?

user5350286 Over a year ago

It returns 0 to me always

Collectives™ on Stack Overflow

How to retrieve Running application CPU usage programmatically? : Android

1 Answer 1

4 Comments

Your Answer

Hot Network Questions

Collectives™ on Stack Overflow

1 Answer 1

4 Comments

Your Answer

Sign up or log in

Post as a guest

Related