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profile.java

/*
   D-Bus Java Implementation
   Copyright (c) 2005-2006 Matthew Johnson

   This program is free software; you can redistribute it and/or modify it
   under the terms of either the GNU Lesser General Public License Version 2 or the
   Academic Free Licence Version 2.1.

   Full licence texts are included in the COPYING file with this program.
*/
package org.freedesktop.dbus.test;

import java.util.Random;
import java.util.HashMap;
import java.util.Vector;

import org.freedesktop.DBus.Peer;
import org.freedesktop.DBus.Introspectable;
import org.freedesktop.dbus.DBusConnection;
import org.freedesktop.dbus.DBusSigHandler;
import org.freedesktop.dbus.UInt32;

class ProfileHandler implements DBusSigHandler<Profiler.ProfileSignal>
{
   public int c = 0;
   public void handle(Profiler.ProfileSignal s)
   {
      if (0 == (c++%profile.SIGNAL_INNER)) System.out.print("-");
   }
}

/**
 * Profiling tests.
 */
00035 public class profile
{
   public static final int SIGNAL_INNER = 100;
   public static final int SIGNAL_OUTER = 100;
   public static final int PING_INNER = 100;
   public static final int PING_OUTER = 100;
   public static final int BYTES = 2000000;
   public static final int INTROSPECTION_OUTER = 100;
   public static final int INTROSPECTION_INNER = 10;
   public static final int STRUCT_OUTER = 100;
   public static final int STRUCT_INNER = 10;
   public static final int LIST_OUTER = 100;
   public static final int LIST_INNER = 10;
   public static final int LIST_LENGTH = 100;
   public static final int MAP_OUTER = 100;
   public static final int MAP_INNER = 10;
   public static final int MAP_LENGTH = 100;
   public static final int ARRAY_OUTER = 100;
   public static final int ARRAY_INNER = 10;
   public static final int ARRAY_LENGTH = 1000;
   public static final int STRING_ARRAY_OUTER = 10;
   public static final int STRING_ARRAY_INNER = 1;
   public static final int STRING_ARRAY_LENGTH = 20000;
      
   public static class Log
   {
      private long last;
      private int[] deltas;
      private int current = 0;
      public Log(int size)
      {
         deltas = new int[size];
      }
      public void start()
      {
         last = System.currentTimeMillis();
      }
      public void stop()
      {
         deltas[current] = (int) (System.currentTimeMillis()-last);
         current++;
      }
      public double mean()
      {
         if (0 == current) return 0;
         long sum = 0;
         for (int i = 0; i < current; i++)
            sum+=deltas[i];
         return sum /= current;            
      }
      public long min()
      {
         int m = Integer.MAX_VALUE;
         for (int i = 0; i < current; i++)
            if (deltas[i] < m) m = deltas[i];
         return m;
      }
      public long max()
      {
         int m = 0;
         for (int i = 0; i < current; i++)
            if (deltas[i] > m) m = deltas[i];
         return m;
      }
      public double stddev()
      {
         double mean = mean();
         double sum = 0;
         for (int i=0; i < current; i++)
            sum += (deltas[i]-mean)*(deltas[i]-mean);
         return Math.sqrt(sum / (current-1));
      }
   }
   public static void main(String[] args)
   {
      try {
         if (0==args.length) {
            System.out.println("You must specify a profile type.");
            System.out.println("Syntax: profile <pings|arrays|introspect|maps|bytes|lists|structs|signals|rate|strings>");
            System.exit(1);
         }
         DBusConnection conn = DBusConnection.getConnection(DBusConnection.SESSION);
         conn.requestBusName("org.freedesktop.DBus.java.profiler");
         if ("pings".equals(args[0])) {
            int count = PING_INNER*PING_OUTER;
            System.out.print("Sending "+count+" pings...");
            Peer p = conn.getRemoteObject("org.freedesktop.DBus.java.profiler", "/Profiler", Peer.class);
            Log l = new Log(count);
            long t = System.currentTimeMillis();
            for (int i = 0; i < PING_OUTER; i++) {
               for (int j = 0; j < PING_INNER; j++) {
                  l.start();
                  p.Ping();
                  l.stop();
               }
               System.out.print(".");
            }
            t = System.currentTimeMillis()-t;
            System.out.println(" done.");
            System.out.println("min/max/avg (ms): "+l.min()+"/"+l.max()+"/"+l.mean());
            System.out.println("deviation: "+l.stddev());
            System.out.println("Total time: "+t+"ms");
         } else if ("strings".equals(args[0])) {
            int count = STRING_ARRAY_INNER*STRING_ARRAY_OUTER;
            System.out.print("Sending array of "+STRING_ARRAY_LENGTH+" strings "+count+" times.");
            ProfilerInstance pi = new ProfilerInstance();
            conn.exportObject("/Profiler", pi);
            Profiler p = conn.getRemoteObject("org.freedesktop.DBus.java.profiler", "/Profiler", Profiler.class);
            String[] v = new String[STRING_ARRAY_LENGTH];
            Random r = new Random();
            for (int i = 0; i < STRING_ARRAY_LENGTH; i++) v[i] = ""+r.nextInt();
            Log l = new Log(count);
            long t = System.currentTimeMillis();
            for (int i = 0; i < STRING_ARRAY_OUTER; i++) {
               for (int j = 0; j < STRING_ARRAY_INNER; j++) {
                  l.start();
                  p.stringarray(v);
                  l.stop();
               }
               System.out.print(".");
            }
            t = System.currentTimeMillis()-t;
            System.out.println(" done.");
            System.out.println("min/max/avg (ms): "+l.min()+"/"+l.max()+"/"+l.mean());
            System.out.println("deviation: "+l.stddev());
            System.out.println("Total time: "+t+"ms");
         } else if ("arrays".equals(args[0])) {
            int count = ARRAY_INNER*ARRAY_OUTER;
            System.out.print("Sending array of "+ARRAY_LENGTH+" ints "+count+" times.");
            ProfilerInstance pi = new ProfilerInstance();
            conn.exportObject("/Profiler", pi);
            Profiler p = conn.getRemoteObject("org.freedesktop.DBus.java.profiler", "/Profiler", Profiler.class);
            int[] v = new int[ARRAY_LENGTH];
            Random r = new Random();
            for (int i = 0; i < ARRAY_LENGTH; i++) v[i] = r.nextInt();
            Log l = new Log(count);
            long t = System.currentTimeMillis();
            for (int i = 0; i < ARRAY_OUTER; i++) {
               for (int j = 0; j < ARRAY_INNER; j++) {
                  l.start();
                  p.array(v);
                  l.stop();
               }
               System.out.print(".");
            }
            t = System.currentTimeMillis()-t;
            System.out.println(" done.");
            System.out.println("min/max/avg (ms): "+l.min()+"/"+l.max()+"/"+l.mean());
            System.out.println("deviation: "+l.stddev());
            System.out.println("Total time: "+t+"ms");
         } else if ("maps".equals(args[0])) {
            int count = MAP_INNER*MAP_OUTER;
            System.out.print("Sending map of "+MAP_LENGTH+" string=>strings "+count+" times.");
            ProfilerInstance pi = new ProfilerInstance();
            conn.exportObject("/Profiler", pi);
            Profiler p = conn.getRemoteObject("org.freedesktop.DBus.java.profiler", "/Profiler", Profiler.class);
            HashMap<String,String> m = new HashMap<String,String>();
            for (int i = 0; i < MAP_LENGTH; i++) 
               m.put(""+i, "hello");
            Log l = new Log(count);
            long t = System.currentTimeMillis();
            for (int i = 0; i < MAP_OUTER; i++) {
               for (int j=0; j < MAP_INNER; j++) {
                  l.start();
                  p.map(m);
                  l.stop();
               }
               System.out.print(".");
            }
            t = System.currentTimeMillis()-t;
            System.out.println(" done.");
            System.out.println("min/max/avg (ms): "+l.min()+"/"+l.max()+"/"+l.mean());
            System.out.println("deviation: "+l.stddev());
            System.out.println("Total time: "+t+"ms");
         } else if ("lists".equals(args[0])) {
            int count = LIST_OUTER*LIST_INNER;
            System.out.print("Sending list of "+LIST_LENGTH+" strings "+count+" times.");
            ProfilerInstance pi = new ProfilerInstance();
            conn.exportObject("/Profiler", pi);
            Profiler p = conn.getRemoteObject("org.freedesktop.DBus.java.profiler", "/Profiler", Profiler.class);
            Vector<String> v = new Vector<String>();
            for (int i = 0; i < LIST_LENGTH; i++) 
               v.add("hello "+i);
            Log l = new Log(count);
            long t = System.currentTimeMillis();
            for (int i = 0; i < LIST_OUTER; i++) {
               for (int j=0; j < LIST_INNER; j++) {
                  l.start();
                  p.list(v);
                  l.stop();
               }
               System.out.print(".");
            }
            t = System.currentTimeMillis()-t;
            System.out.println(" done.");
            System.out.println("min/max/avg (ms): "+l.min()+"/"+l.max()+"/"+l.mean());
            System.out.println("deviation: "+l.stddev());
            System.out.println("Total time: "+t+"ms");
         } else if ("structs".equals(args[0])) {
            int count = STRUCT_OUTER*STRUCT_INNER;
            System.out.print("Sending a struct "+count+" times.");
            ProfilerInstance pi = new ProfilerInstance();
            conn.exportObject("/Profiler", pi);
            Profiler p = conn.getRemoteObject("org.freedesktop.DBus.java.profiler", "/Profiler", Profiler.class);
            ProfileStruct ps = new ProfileStruct("hello", new UInt32(18), 500L);
            Log l = new Log(count);
            long t = System.currentTimeMillis();
            for (int i = 0; i < STRUCT_OUTER; i++) {
               for (int j=0; j < STRUCT_INNER; j++) {
                  l.start();
                  p.struct(ps);
                  l.stop();
               }
               System.out.print(".");
            }
            t = System.currentTimeMillis()-t;
            System.out.println(" done.");
            System.out.println("min/max/avg (ms): "+l.min()+"/"+l.max()+"/"+l.mean());
            System.out.println("deviation: "+l.stddev());
            System.out.println("Total time: "+t+"ms");
         } else if ("introspect".equals(args[0])) {
            int count = INTROSPECTION_OUTER*INTROSPECTION_INNER;
            System.out.print("Recieving introspection data "+count+" times.");
            ProfilerInstance pi = new ProfilerInstance();
            conn.exportObject("/Profiler", pi);
            Introspectable is = conn.getRemoteObject("org.freedesktop.DBus.java.profiler", "/Profiler", Introspectable.class);
            Log l = new Log(count);
            long t = System.currentTimeMillis();
            String s = null;
            for (int i = 0; i < INTROSPECTION_OUTER; i++) {
               for (int j = 0; j < INTROSPECTION_INNER; j++) {
                  l.start();
                  s = is.Introspect();
                  l.stop();
               }
               System.out.print(".");
            }
            t = System.currentTimeMillis()-t;
            System.out.println(" done.");
            System.out.println("min/max/avg (ms): "+l.min()+"/"+l.max()+"/"+l.mean());
            System.out.println("deviation: "+l.stddev());
            System.out.println("Total time: "+t+"ms");
            System.out.println("Introspect data: "+s);
         } else if ("bytes".equals(args[0])) {
            System.out.print("Sending "+BYTES+" bytes");
            ProfilerInstance pi = new ProfilerInstance();
            conn.exportObject("/Profiler", pi);
            Profiler p = conn.getRemoteObject("org.freedesktop.DBus.java.profiler", "/Profiler", Profiler.class);
            byte[] bs = new byte[BYTES];
            for (int i = 0; i < BYTES; i++) 
               bs[i] = (byte) i;            
            long t = System.currentTimeMillis();
            p.bytes(bs);
            System.out.println(" done in "+(System.currentTimeMillis()-t)+"ms.");
         } else if ("rate".equals(args[0])) {
            ProfilerInstance pi = new ProfilerInstance();
            conn.exportObject("/Profiler", pi);
            Profiler p = conn.getRemoteObject("org.freedesktop.DBus.java.profiler", "/Profiler",         Profiler.class);
            Peer peer = conn.getRemoteObject("org.freedesktop.DBus.java.profiler", "/Profiler", Peer.class);
            long start = System.currentTimeMillis();
            int count = 0;
            do {
               peer.Ping();
               count++;
            } while(count < 10000);
            long end = System.currentTimeMillis();
            System.out.println("No payload: "+((count*1000)/(end-start))+" RT/second");
            int len = 256;
            while (len <= 32768) {
               byte[] bs = new byte[len];
               count = 0;
               start = System.currentTimeMillis();
               do {
                  p.bytes(bs);
                  count++;
               } while(count < 1000);
               end = System.currentTimeMillis();
               long ms = end-start;
               double cps = (count*1000)/ms;
               double rate = (len*cps)/(1024.0*1024.0);
               System.out.println(len+" byte array) "+(count*len)+" bytes in "+ms+"ms (in "+count+" calls / "+(int)cps+" CPS): "+rate+"MB/s");
               len <<= 1;
            }
            len = 256;
            while (len <= 32768) {
               StringBuilder sb = new StringBuilder();
               for (int i = 0; i < len; i++) sb.append('a');
               String s = sb.toString();
               end = System.currentTimeMillis()+500;
               count = 0;
               do {
                  p.string(s);
                  count++;
               } while(count < 1000);
               long ms = end-start;
               double cps = (count*1000)/ms;
               double rate = (len*cps)/(1024.0*1024.0);
               System.out.println(len+" string) "+(count*len)+" bytes in "+ms+"ms (in "+count+" calls / "+(int)cps+" CPS): "+rate+"MB/s");
               len <<= 1;
            }
         } else if ("signals".equals(args[0])) {
            int count = SIGNAL_OUTER*SIGNAL_INNER;
            System.out.print("Sending "+count+" signals");
            ProfileHandler ph = new ProfileHandler();
            conn.addSigHandler(Profiler.ProfileSignal.class, ph);
            Log l = new Log(count);
            Profiler.ProfileSignal ps = new Profiler.ProfileSignal("/");
            long t = System.currentTimeMillis();
            for (int i = 0; i < SIGNAL_OUTER; i++) {
               for (int j = 0; j < SIGNAL_INNER; j++) {
                  l.start();
                  conn.sendSignal(ps);
                  l.stop();
               }
               System.out.print(".");
            }
            t = System.currentTimeMillis()-t;
            System.out.println(" done.");
            System.out.println("min/max/avg (ms): "+l.min()+"/"+l.max()+"/"+l.mean());
            System.out.println("deviation: "+l.stddev());
            System.out.println("Total time: "+t+"ms");
            while (ph.c < count) try { Thread.sleep(100); }
            catch (InterruptedException Ie) {};
         } else {
            conn.disconnect();
            System.out.println("Invalid profile ``"+args[0]+"''.");
            System.out.println("Syntax: profile <pings|arrays|introspect|maps|bytes|lists|structs|signals>");
            System.exit(1);
         }
         conn.disconnect();
      } catch (Exception e) {
         e.printStackTrace();
         System.exit(1);
      }
   }
}

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