by jack

    jmeter自带的监控器输出的只有四条曲线，其中health和load曲线还是根据mem和thread算出来的，所以真正意义上输出的数据只有两个而已。显然这远远满足不了我们对性能监控的需要么。

    既然jmeter没有，那我就有用武之地了（要不然要我这QA架构师干啥，哈），于是我自己添了几个，用着还不错，现在把添加一个参数的过程完整叙述如下：

以增加swapout为例，取xml中的currentThreadsBusy作为swapout的值。

蓝色字注明关键点：

Stats.java

增加新的数据解析方法

      public static intcalculateSwapout(Status stat) {

             doubleswapout= 0;

             if (stat != null && stat.getConnector().size() > 0) {

                    Connector cntr = (Connector) stat.getConnector().get(0);

                    swapout= cntr.getRequestInfo().getCurrentThreadsBusy();

             }

             return (int)swapout;

      }

MonitorStats.java

增加私有静态变量

      private static final StringSWAPOUT= "stats.swapout";

增加构造函数入参、赋值语句

      public MonitorStats(int health, int load, int cpuload, int memload, int threadload, int swapin,int swapout, String host, String port,

                    String protocol, long time) {

             this.setHealth(health);

             this.setLoad(load);

             this.setCpuLoad(cpuload);

             this.setMemLoad(memload);

             this.setThreadLoad(threadload);

             this.setSwapin(swapin);

             this.setSwapout(swapout);

             this.setHost(host);

             this.setPort(port);

             this.setProtocol(protocol);

             this.setTimeStamp(time);

      }

增加相应set、get方法

      public voidsetSwapout(int load) {

             this.setProperty(SWAPOUT, String.valueOf(load));

      }

      public intgetSwapout() {

             return this.getPropertyAsInt(SWAPOUT);

      }

MonitorModel.java

增加私有变量对象current初始化中MonitorStats实例化的入参

      private MonitorStats current = new MonitorStats(0, 0, 0, 0, 0, 0,0, "", "", "", System.currentTimeMillis());

增加clearData方法中MonitorStats实例化的入参

             current = new MonitorStats(0, 0, 0, 0, 0, 0,0, "", "", "", System.currentTimeMillis());

增加相应get方法

      public intgetSwapout() {

            return this.current.getSwapout();

      }

增加cloneMonitorStats方法的入参

      public MonitorStats cloneMonitorStats() {

             return new MonitorStats(current.getHealth(), current.getLoad(), current.getCpuLoad(), current.getMemLoad(),

                           current.getThreadLoad(), current.getSwapin(), current.getSwapout(), current.getHost(), current.getPort(), current.getProtocol(), current

                                         .getTimeStamp());

      }

MemoryBenchmark.java

增加main方法中MonitorStats实例化的入参

                           MonitorStats mstats = new MonitorStats(Stats.calculateHealth(st), Stats.calculateLoad(st), Stats.calculateCpuLoad(st), Stats

                                         .calculateMemLoad(st), Stats.calculateThreadLoad(st), Stats.calculateSwapin(st), Stats.calculateSwapout(st), "localhost", "8080", "http", System

                                         .currentTimeMillis());

MonitorAccumModel.java

增加addSample方法中MonitorStats实例化的入参

                             MonitorStats stat = new MonitorStats(Stats.calculateHealth(st), Stats.calculateLoad(st), Stats.calculateCpuLoad(st), Stats

                                           .calculateMemLoad(st), Stats.calculateThreadLoad(st), Stats.calculateSwapin(st), Stats.calculateSwapout(st), surl.getHost(), String.valueOf(surl

                                           .getPort()), surl.getProtocol(), System.currentTimeMillis());

增加createNewMonitorModel方法中MonitorStats实例化的入参

             MonitorStats stat = new MonitorStats(Stats.DEAD, 0, 0, 0, 0, 0,0, url.getHost(), String.valueOf(url.getPort()), url

                           .getProtocol(), System.currentTimeMillis());

MonitorPerformancePanel.java

增加公共静态变量（显示文案和图例，同时增加资源文件中对应项，及相应图片）

      public static final String LEGEND_SWAPOUT= JMeterUtils.getResString("monitor_legend_swapout_per");

      public static final ImageIcon LEGEND_SWAPOUT_ICON = JMeterUtils.getImage("monitor-yellow-legend.gif");

资源文件messages.properties：

monitor_legend_swapout_per=Swap Out

图片文件monitor-yellow-legend.gif

增加createLegend方法中的JLabel实例化语句

             JLabeljswapout= new JLabel(LEGEND_SWAPOUT);

             jswapout.setFont(plaintext);

             jswapout.setPreferredSize(lsize);

             jswapout.setIcon(LEGEND_SWAPOUT_ICON);

             legend.add(jswapout);

MonitorGraph.java

增加私有变量

      private booleanSWAPOUT= true;

增加相应set方法

      public voidsetSwapout(booleanswapout) {

             this.SWAPOUT=swapout;

      }

增加drawSample方法中相应绘图语句

             if (SWAPOUT) {

                    int swoy = (int) (height - (height * (model.getSwapout() / 10000.0)));

                    int lastswoy = (int) (height - (height * (last.getSwapout() / 10000.0)));

                    g.setColor(Color.yellow);

                    g.drawLine(lastx, lastswoy, xaxis, swoy);

             }