hyperic-sigar 獲取全面的系統信息

轉自：http://blog.sina.com.cn/s/blog_6151984a0100ni1n.html

• Hyperic-Sigar簡介

Hyperic-Sigar是一個收集系統各項底層信息的工具集.他有如下特點:
1. 收集信息全面
收集CPU,MEM,NETWORK,PROCESS,IOSTAT等
使用Sigar,你完全可以模仿出cpuinfo,meminfo,top,free,ifconfig,ipconfig,netstat,route,df,du,ps,ls等多種unix平臺和windows平臺的指令.
2.跨平臺,支持多數平臺
支持的平臺包括:windows系列(32系列,IA64系列,AMD64系列),linux系列,freeBsd系列,HPUnix 系列,Sun solaris/Sparc/Sparc64系列,macOs系列,AIX系列等
3.提供的API接口全面
sigar本身由C語言開發而成,提供了豐富的API接口,包括:JAVA,.NET,PERL,PHP,PYTHON,RUBY

• 通過JAVA API接口調用Sigar,獲取系統信息的例子

1.先確定基本Sigar庫
Sigar JAVA編程只是JAVA API編程,需要調用Sigar的基本庫,因此需要把Sigar基本庫放在對應的ClassPath下
注意:Sigar爲不同平臺提供了不同的庫文件.典型的:
windows平臺:sigar-x86-winnt.dll
linux平臺:libsigar-x86-linux.so或
solaris平臺: libsigar-x86-solaris.so或libsigar-sparc-solaris.so或libsigar-sparc64-solaris.so
64位平臺:分爲至強的libsigar-ia64-linux.so和AMD的libsigar-amd64-linux.so,sigar-amd64-winnt.dll

2. 程序代碼

public class SystemInfo {
   
    private Sigar sigar ;
   
    private SigarProxy proxy;
   
    private StringBuilder info = new StringBuilder();

    private void sigarInit(boolean isProxy) {
        sigar = new Sigar();
        if(isProxy)
            proxy = SigarProxyCache.newInstance(this.sigar);
    }
   
    private void shutdown() {
        this.sigar.close();
    }
   

   
    public String getInfo() {
        return info.toString();
    }

    public void clearInfo() {
        if ( null != info )
            info.delete(0,info.length());
    }

    private void println(String arg){
        info.append(arg+"\n");
    }
   
    public String sprintf(String format, Object[] items) {
        return new PrintfFormat(format).sprintf(items);
    }

    public void printf(String format, Object[] items) {
        println(sprintf(format, items));
    }
    

    public void cpuInfo() {
        clearInfo();
        println("============Current system Cpu information================");

        try {
           
            sigarInit(false);
           
            org.hyperic.sigar.CpuInfo[] infos =
                this.sigar.getCpuInfoList();

            CpuPerc[] cpus =
                this.sigar.getCpuPercList();

            org.hyperic.sigar.CpuInfo info = infos[0];
            long cacheSize = info.getCacheSize();
            println("Vendor........." + info.getVendor());
            println("Model.........." + info.getModel());
            println("Mhz............" + info.getMhz());
            println("Total CPUs....." + info.getTotalCores());
            println("Physical CPUs.." + info.getTotalSockets());
            println("Cores per CPU.." + info.getCoresPerSocket());


            if (cacheSize != Sigar.FIELD_NOTIMPL) {
                println("Cache size...." + cacheSize);
            }
            println("");

            for (int i=0; i<cpus.length; i++) {
                println("CPU " + i + ".........");
                outputCpuPerc(cpus[i]);
            }