Java Sigar.getCpuPerc方法代碼示例

import org.hyperic.sigar.Sigar; //導入方法依賴的package包/類
@Override
public boolean onCommand(CommandSender sender, Command command, String label, String[] args) {
    if (!isAllowed(sender, command)) {
        sender.sendMessage(org.bukkit.ChatColor.DARK_RED + "Not whitelisted");
        return true;
    }

    if (!plugin.getConfig().getBoolean("native-library")) {
        sender.sendMessage(ChatColor.DARK_RED + "Native support is disabled");
        return true;
    }

    //swap and load is already available in the environment command because MBeans already supports this
    Sigar sigar = plugin.getNativeData().getSigar();
    try {
        int uptime = (int) sigar.getUptime().getUptime();
        sender.sendMessage(PRIMARY_COLOR + "OS Uptime: " + SECONDARY_COLOR + formatUptime(uptime));

        CpuInfo[] cpuInfoList = sigar.getCpuInfoList();
        int mhz = cpuInfoList[0].getMhz();
        sender.sendMessage(PRIMARY_COLOR + "CPU MHZ: " + SECONDARY_COLOR + mhz);

        CpuPerc cpuPerc = sigar.getCpuPerc();
        //IO wait
        double wait = cpuPerc.getWait();
        sender.sendMessage(PRIMARY_COLOR + "CPU Wait (I/O): " + SECONDARY_COLOR + wait + '%');

        Mem mem = sigar.getMem();
        //included cache
        long actualUsed = mem.getActualUsed();
        long used = mem.getUsed();

        long cache = used - actualUsed;
        sender.sendMessage(PRIMARY_COLOR + "Memory Cache: " + SECONDARY_COLOR + Sigar.formatSize(cache));

        printNetworkInfo(sender, sigar);

        //disk read write
        List<String> diskNames = Arrays.stream(sigar.getFileSystemList())
                .map(FileSystem::getDevName)
                .filter(name -> name.startsWith("/dev/sd"))
                .distinct()
                .collect(Collectors.toList());

        Collection<DiskUsage> diskUsages = new ArrayList<>();
        for (String diskName : diskNames) {
            diskUsages.add(sigar.getDiskUsage(diskName));
        }

        long diskReads = diskUsages.stream().mapToLong(DiskUsage::getReadBytes).sum();
        long diskWrites = diskUsages.stream().mapToLong(DiskUsage::getWriteBytes).sum();


        String diskReadBytes = Sigar.formatSize(diskReads);
        String diskWriteBytes = Sigar.formatSize(diskWrites);

        sender.sendMessage(PRIMARY_COLOR + "Disk read bytes: " + SECONDARY_COLOR + diskReadBytes);
        sender.sendMessage(PRIMARY_COLOR + "Disk write bytes: " + SECONDARY_COLOR + diskWriteBytes);

        sender.sendMessage(PRIMARY_COLOR + "Filesystems:");
        for (FileSystem fileSystem : sigar.getFileSystemList()) {
            String dirName = fileSystem.getDirName();
            String typeName = fileSystem.getSysTypeName();
            sender.sendMessage(PRIMARY_COLOR + dirName + " - " + SECONDARY_COLOR + typeName);
        }
    } catch (SigarException sigarException) {
        plugin.getLogger().log(Level.SEVERE, null, sigarException);
    }

    return true;
}
 

import org.hyperic.sigar.Sigar; //導入方法依賴的package包/類
private void updateSystemCpuUsage(Sigar sigar, MachineInfo info)
{
       try {
           CpuPerc perc = sigar.getCpuPerc();
           info.setSystemCpuUsage((float) perc.getCombined());
       } catch (SigarException e) {
           log.error(e.getMessage(), e);
       }
}
 

import org.hyperic.sigar.Sigar; //導入方法依賴的package包/類
/**
 * CPU總使用率
 */
public static double getCpuCombined() throws SigarException {
	Sigar sigar = new Sigar();
	CpuPerc cpuPerc = sigar.getCpuPerc();
	return new Double(df.format(cpuPerc.getCombined() * 100));
}
 

import org.hyperic.sigar.Sigar; //導入方法依賴的package包/類
public static void getNativeInfo() {
    Sigar sigar = new Sigar();
    try {
        int uptime = (int) sigar.getUptime().getUptime();

        CpuInfo[] cpuInfoList = sigar.getCpuInfoList();
        int mhz = cpuInfoList[0].getMhz();

        CpuPerc cpuPerc = sigar.getCpuPerc();
        //IO wait
        double wait = cpuPerc.getWait();

        Mem mem = sigar.getMem();
        //included cache
        long actualUsed = mem.getActualUsed();
        long used = mem.getUsed();

        long cache = used - actualUsed;

        //net upload download
        NetInterfaceStat usedNetInterfaceStat = null;
        String[] netInterfaceList = sigar.getNetInterfaceList();
        for (String interfaceName : netInterfaceList) {
            NetInterfaceStat interfaceStat = sigar.getNetInterfaceStat(interfaceName);
            if (interfaceStat.getRxBytes() != 0) {
                usedNetInterfaceStat = interfaceStat;
                break;
            }
        }

        if (usedNetInterfaceStat != null) {
            long speed = usedNetInterfaceStat.getSpeed();

            long receivedBytes = usedNetInterfaceStat.getRxBytes();
            long sentBytes = usedNetInterfaceStat.getTxBytes();
        }

        String rootFileSystem = File.listRoots()[0].getAbsolutePath();
        FileSystemUsage fileSystemUsage = sigar.getFileSystemUsage(rootFileSystem);
        long diskReadBytes = fileSystemUsage.getDiskReadBytes();
        long diskWriteBytes = fileSystemUsage.getDiskWriteBytes();
    } catch (SigarException ex) {
        Logger.getLogger(NativeStats.class.getName()).log(Level.SEVERE, null, ex);
    } finally {
        sigar.close();
    }
}
 

import org.hyperic.sigar.Sigar; //導入方法依賴的package包/類
public static void main(String[] args) throws Exception {

        System.setProperty("java.library.path", System.getProperty("java.library.path")+File.pathSeparator+"lib");

        //set sys_paths to null
        final Field sysPathsField = ClassLoader.class.getDeclaredField("sys_paths");
        sysPathsField.setAccessible(true);
        sysPathsField.set(null, null);

        System.out.println(System.getProperty("java.library.path"));

        FileWriter fw = new FileWriter("resource_usage.csv", true);
        StringJoiner stringJoiner = new StringJoiner(",");
        stringJoiner.add("time");
        stringJoiner.add("cpu");
        stringJoiner.add("used mem");
        stringJoiner.add("used mem%");
        stringJoiner.add("downloaded");
        stringJoiner.add("uploaded");
        fw.write(stringJoiner.toString() + '\n');
        fw.flush();

        Sigar sigar = new Sigar();
        new NetworkData(sigar);

        NumberFormat formatter = new DecimalFormat("0.00", new MyDecimalFormatSymbols());


        while (true) {
            long start = System.currentTimeMillis();
            Mem mem = sigar.getMem();
            CpuPerc cpuPerc = sigar.getCpuPerc();
            System.out.print(mem.getUsed() + "\t");
            System.out.print(mem.getUsedPercent() + "\t");
            System.out.print(formatter.format(cpuPerc.getCombined() * 100) + "\t");

            Long[] metric = NetworkData.getMetric();


            long downloaded = metric[0];
            long uploaded = metric[1];
            System.out.println("in-bound " + Sigar.formatSize(downloaded)
                    + " out-bound " + Sigar.formatSize(uploaded));
            System.out.println();

            stringJoiner = new StringJoiner(",");
            stringJoiner.add(Long.toString(start));
            stringJoiner
                    .add(formatter.format(cpuPerc.getCombined() * 100))
                    .add(mem.getUsed() + "")
                    .add(mem.getUsedPercent() + "")
                    .add((downloaded) + "")
                    .add((uploaded) + "");

            fw.write(stringJoiner.toString() + "\n");
            fw.flush();

            long end = System.currentTimeMillis();
            Thread.sleep(Math.max(1000 - (end - start), 0));
        }
    }
 

import org.hyperic.sigar.Sigar; //導入方法依賴的package包/類
@Override
CpuPerc loadSnapshot(Sigar sigar) throws SigarException {
	return sigar.getCpuPerc();
}