Re: [Hyperic-hq-discuss] Getting Disk read bytes stat

[Doug M. <do...@hy...>]

Hi,

ReadBytes is a counter, so you'll need to compare the difference over time.  For example:
        Sigar sigar = new Sigar();

        long prevTime = 0;
        long prevBytes = 0;
        final long interval = 1 * 1000;

        while (true) {
            long time = System.currentTimeMillis();
            long bytes = sigar.getDiskUsage("D:").getReadBytes();
            if (prevTime != 0) {
                long rate = (bytes - prevBytes) / ((time - prevTime) / interval);
                System.out.println("disk read bytes per second=" + Sigar.formatSize(rate));
            }
            prevTime = time;
            prevBytes = bytes;
            Thread.sleep(interval);
        }