Java perf tests added

java/Context.cpp

@@ -27,8 +27,7 @@
 
 static jfieldID ctx_handle_fid = NULL;
 
-static void
+static void raise_exception (JNIEnv *env, int err)
-raise_exception (JNIEnv *env, int err)
 {
     //  Get exception class.
     jclass exception_class = env->FindClass ("java/lang/Exception");
@@ -45,8 +44,7 @@ raise_exception (JNIEnv *env, int err)
     env->DeleteLocalRef (exception_class);
 }
 
-JNIEXPORT void JNICALL
+JNIEXPORT void JNICALL Java_org_zmq_Context_construct (JNIEnv *env, jobject obj,
-Java_org_zmq_Context_construct (JNIEnv *env, jobject obj,
     jint app_threads, jint io_threads)
 {
     if (ctx_handle_fid == NULL) {
@@ -66,8 +64,7 @@ Java_org_zmq_Context_construct (JNIEnv *env, jobject obj,
     env->SetLongField (obj, ctx_handle_fid, (jlong) ctx);
 }
 
-JNIEXPORT void JNICALL
+JNIEXPORT void JNICALL Java_org_zmq_Context_finalize (JNIEnv *env, jobject obj)
-Java_org_zmq_Context_finalize (JNIEnv *env, jobject obj)
 {
     void *ctx = (void*) env->GetLongField (obj, ctx_handle_fid);
     assert (ctx);
@@ -76,8 +73,8 @@ Java_org_zmq_Context_finalize (JNIEnv *env, jobject obj)
     assert (rc == 0);
 }
 
-JNIEXPORT jlong JNICALL
+JNIEXPORT jlong JNICALL Java_org_zmq_Context_createSocket (JNIEnv *env,
-Java_org_zmq_Context_createSocket (JNIEnv *env, jobject obj, jint type)
+    jobject obj, jint type)
 {
     void *ctx = (void*) env->GetLongField (obj, ctx_handle_fid);
     assert (ctx);

java/Makefile.am

@@ -12,20 +12,17 @@ jar_DATA = $(jarfile)
 
 dist_noinst_JAVA = \
 	org/zmq/Context.java \
-	org/zmq/Socket.java \
+	org/zmq/Socket.java
-	org/zmq/Message.java
 
 lib_LTLIBRARIES = libjzmq.la
 libjzmq_la_SOURCES = \
 	Context.cpp \
     org_zmq_Context.h \
 	Socket.cpp \
-    org_zmq_Socket.h \
+    org_zmq_Socket.h
-	Message.cpp \
-    org_zmq_Message.h
 
 libjzmq_la_CXXFLAGS = -I$(top_builddir)/src/libzmq \
-@JAVA_INCLUDE@ -I$(top_builddir)/include -I$(top_srcdir)/libjzmq -Wall -I /usr/lib/jvm/java-6-openjdk/include
+@JAVA_INCLUDE@ -I$(top_builddir)/include -I$(top_srcdir)/libjzmq -Wall
 libjzmq_la_LDFLAGS = -version-info 0:0:0
 libjzmq_la_LIBADD = $(top_builddir)/src/libzmq.la
 
@@ -33,17 +30,13 @@ BUILT_SOURCES = \
     org/zmq/Context.class \
     org_zmq_Context.h \
 	org/zmq/Socket.class \
-    org_zmq_Socket.h \
+    org_zmq_Socket.h
-	org/zmq/Message.class \
-    org_zmq_Message.h
 
 CLEANFILES = \
 	org/zmq/Context.class \
 	org_zmq_Context.h \
 	org/zmq/Socket.class \
 	org_zmq_Socket.h \
-	org/zmq/Message.class \
-	org_zmq_Message.h \
 	Zmq.jar
 
 $(srcdir)/Context.cpp: org_zmq_Context.h
@@ -60,13 +53,6 @@ org_zmq_Socket.h: org/zmq/Socket.class
 
 ./org/zmq/Socket.class: classdist_noinst.stamp
 
-$(srcdir)/Message.cpp: org_zmq_Message.h
-
-org_zmq_Message.h: org/zmq/Message.class
-	$(CLASSPATH_ENV) $(JAVAH) -jni -classpath . org.zmq.Message
-
-./org/zmq/Message.class: classdist_noinst.stamp
-
 dist-hook:
 	-rm $(distdir)/*.h
 

java/Socket.cpp

@@ -26,13 +26,9 @@
 #include "org_zmq_Socket.h"
 
 static jfieldID socket_handle_fid = NULL;
-static jclass msg_class = NULL;
-static jmethodID msg_constructor;
-static jmethodID get_msg_handle_mid = NULL;
 static jmethodID create_socket_mid = NULL;
 
-static void
+static void raise_exception (JNIEnv *env, int err)
-raise_exception (JNIEnv *env, int err)
 {
     //  Get exception class.
     jclass exception_class = env->FindClass ("java/lang/Exception");
@@ -49,9 +45,8 @@ raise_exception (JNIEnv *env, int err)
     env->DeleteLocalRef (exception_class);
 }
 
-JNIEXPORT void JNICALL
+JNIEXPORT void JNICALL Java_org_zmq_Socket_construct (JNIEnv *env, jobject obj,
-Java_org_zmq_Socket_construct (JNIEnv *env, jobject obj, jobject context,
+    jobject context, jint type)
-                               jint type)
 {
     if (socket_handle_fid == NULL) {
         jclass cls = env->GetObjectClass (obj);
@@ -69,30 +64,14 @@ Java_org_zmq_Socket_construct (JNIEnv *env, jobject obj, jobject context,
         env->DeleteLocalRef (cls);
     }
 
-    if (msg_class == NULL) {
+    void *s = (void*) env->CallLongMethod (context, create_socket_mid, type);
-        jclass cls = env->FindClass ("org/zmq/Message");
-        assert (cls);
-
-        msg_constructor = env->GetMethodID (cls, "<init>", "()V");
-        assert (msg_constructor);
-
-        get_msg_handle_mid = env->GetMethodID (cls, "getMsgHandle", "()J");
-        assert (get_msg_handle_mid);
-
-        msg_class = (jclass) env->NewGlobalRef (cls);
-        assert (msg_class);
-        env->DeleteLocalRef (cls);
-    }
-
-    void *s = (void *) env->CallLongMethod (context, create_socket_mid, type);
     if (env->ExceptionCheck ())
         return;
 
     env->SetLongField (obj, socket_handle_fid, (jlong) s);
 }
 
-JNIEXPORT void JNICALL
+JNIEXPORT void JNICALL Java_org_zmq_Socket_finalize (JNIEnv *env, jobject obj)
-Java_org_zmq_Socket_finalize (JNIEnv *env, jobject obj)
 {
     void *s = (void*) env->GetLongField (obj, socket_handle_fid);
     assert (s);
@@ -100,8 +79,8 @@ Java_org_zmq_Socket_finalize (JNIEnv *env, jobject obj)
     assert (rc == 0);
 }
 
-JNIEXPORT void JNICALL
+JNIEXPORT void JNICALL Java_org_zmq_Socket_setHwm (JNIEnv *env, jobject obj,
-Java_org_zmq_Socket_setHwm (JNIEnv *env, jobject obj, jlong hwm)
+    jlong hwm)
 {
     void *s = (void*) env->GetLongField (obj, socket_handle_fid);
     assert (s);
@@ -110,8 +89,8 @@ Java_org_zmq_Socket_setHwm (JNIEnv *env, jobject obj, jlong hwm)
         raise_exception (env, errno);
 }
 
-JNIEXPORT void JNICALL
+JNIEXPORT void JNICALL Java_org_zmq_Socket_setLwm (JNIEnv *env, jobject obj,
-Java_org_zmq_Socket_setLwm (JNIEnv *env, jobject obj, jlong lwm)
+    jlong lwm)
 {
     void *s = (void*) env->GetLongField (obj, socket_handle_fid);
     assert (s);
@@ -121,8 +100,8 @@ Java_org_zmq_Socket_setLwm (JNIEnv *env, jobject obj, jlong lwm)
         raise_exception (env, errno);
 }
 
-JNIEXPORT void JNICALL
+JNIEXPORT void JNICALL Java_org_zmq_Socket_setSwap (JNIEnv *env, jobject obj,
-Java_org_zmq_Socket_setSwap (JNIEnv *env, jobject obj, jlong swap_size)
+    jlong swap_size)
 {
     void *s = (void*) env->GetLongField (obj, socket_handle_fid);
     assert (s);
@@ -132,8 +111,8 @@ Java_org_zmq_Socket_setSwap (JNIEnv *env, jobject obj, jlong swap_size)
         raise_exception (env, errno);
 }
 
-JNIEXPORT void JNICALL
+JNIEXPORT void JNICALL Java_org_zmq_Socket_setMask (JNIEnv *env, jobject obj,
-Java_org_zmq_Socket_setMask (JNIEnv *env, jobject obj, jlong mask)
+    jlong mask)
 {
     void *s = (void*) env->GetLongField (obj, socket_handle_fid);
     assert (s);
@@ -143,8 +122,8 @@ Java_org_zmq_Socket_setMask (JNIEnv *env, jobject obj, jlong mask)
         raise_exception (env, errno);
 }
 
-JNIEXPORT void JNICALL
+JNIEXPORT void JNICALL Java_org_zmq_Socket_setAffinity (JNIEnv *env,
-Java_org_zmq_Socket_setAffinity (JNIEnv *env, jobject obj, jlong affinity)
+    jobject obj, jlong affinity)
 {
     void *s = (void*) env->GetLongField (obj, socket_handle_fid);
     assert (s);
@@ -154,8 +133,8 @@ Java_org_zmq_Socket_setAffinity (JNIEnv *env, jobject obj, jlong affinity)
         raise_exception (env, errno);
 }
 
-JNIEXPORT void JNICALL
+JNIEXPORT void JNICALL Java_org_zmq_Socket_setIdentity (JNIEnv *env,
-Java_org_zmq_Socket_setIdentity (JNIEnv *env, jobject obj, jstring identity)
+    jobject obj, jstring identity)
 {
     void *s = (void*) env->GetLongField (obj, socket_handle_fid);
     assert (s);
@@ -176,8 +155,8 @@ Java_org_zmq_Socket_setIdentity (JNIEnv *env, jobject obj, jstring identity)
         raise_exception (env, errno);
 }
 
-JNIEXPORT void JNICALL
+JNIEXPORT void JNICALL Java_org_zmq_Socket_bind (JNIEnv *env, jobject obj,
-Java_org_zmq_Socket_bind (JNIEnv *env, jobject obj, jstring addr)
+    jstring addr)
 {
     void *s = (void*) env->GetLongField (obj, socket_handle_fid);
     assert (s);
@@ -188,8 +167,10 @@ Java_org_zmq_Socket_bind (JNIEnv *env, jobject obj, jstring addr)
     }
 
     const char *c_addr = env->GetStringUTFChars (addr, NULL);
-    if (c_addr == NULL)
+    if (c_addr == NULL) {
+        raise_exception (env, EINVAL);
         return;
+    }
 
     int rc = zmq_bind (s, c_addr);
     env->ReleaseStringUTFChars (addr, c_addr);
@@ -198,8 +179,8 @@ Java_org_zmq_Socket_bind (JNIEnv *env, jobject obj, jstring addr)
         raise_exception (env, errno);
 }
 
-JNIEXPORT void JNICALL
+JNIEXPORT void JNICALL Java_org_zmq_Socket_connect (JNIEnv *env, jobject obj,
-Java_org_zmq_Socket_connect (JNIEnv *env, jobject obj, jstring addr)
+    jstring addr)
 {
     void *s = (void*) env->GetLongField (obj, socket_handle_fid);
     assert (s);
@@ -210,8 +191,10 @@ Java_org_zmq_Socket_connect (JNIEnv *env, jobject obj, jstring addr)
     }
 
     const char *c_addr = env->GetStringUTFChars (addr, NULL);
-    if (c_addr == NULL)
+    if (c_addr == NULL) {
+        raise_exception (env, EINVAL);
         return;
+    }
 
     int rc = zmq_connect (s, c_addr);
     env->ReleaseStringUTFChars (addr, c_addr);
@@ -220,57 +203,80 @@ Java_org_zmq_Socket_connect (JNIEnv *env, jobject obj, jstring addr)
         raise_exception (env, errno);
 }
 
-JNIEXPORT jint JNICALL
+JNIEXPORT jboolean JNICALL Java_org_zmq_Socket_send (JNIEnv *env, jobject obj,
-Java_org_zmq_Socket_send (JNIEnv *env, jobject obj, jobject msg, jlong flags)
+    jbyteArray msg, jlong flags)
 {
     void *s = (void*) env->GetLongField (obj, socket_handle_fid);
     assert (s);
 
-    zmq_msg_t *zmq_msg = (zmq_msg_t *)
+    jsize size = env->GetArrayLength (msg); 
-        env->CallLongMethod (msg, get_msg_handle_mid);
+    jbyte *data = env->GetByteArrayElements (msg, 0);
 
-    if (env->ExceptionCheck ())
+    zmq_msg_t message;
-        return -1;
+    int rc = zmq_msg_init_size (&message, size);
+    assert (rc == 0);
+    memcpy (zmq_msg_data (&message), data, size);
 
-    int rc = zmq_send (s, zmq_msg, (int) flags);
+    env->ReleaseByteArrayElements (msg, data, 0);
-    if (rc == -1) {
+
-        raise_exception (env, errno);
+    rc = zmq_send (s, &message, (int) flags);
-        return -1;
+        
+    if (rc == -1 && errno == EAGAIN) {
+        rc = zmq_msg_close (&message);
+        assert (rc == 0);
+        return JNI_FALSE;
     }
     
-    return rc;
-}
-
-JNIEXPORT void JNICALL
-Java_org_zmq_Socket_flush (JNIEnv *env, jobject obj)
-{
-    void *s = (void*) env->GetLongField (obj, socket_handle_fid);
-    assert (s);
-
-    zmq_flush (s);
-}
-
-JNIEXPORT jobject JNICALL
-Java_org_zmq_Socket_recv (JNIEnv *env, jobject obj, jlong flags)
-{
-    void *s = (void*) env->GetLongField (obj, socket_handle_fid);
-    assert (s);
-
-    jobject msg = env->NewObject (msg_class, msg_constructor);
-    if (msg == NULL)
-        return NULL;
-
-    zmq_msg_t *zmq_msg = (zmq_msg_t*)
-        env->CallLongMethod (msg, get_msg_handle_mid);
-
-    if (env->ExceptionCheck ())
-        return NULL;
-
-    int rc = zmq_recv (s, zmq_msg, (int) flags);
     if (rc == -1) {
         raise_exception (env, errno);
+        rc = zmq_msg_close (&message);
+        assert (rc == 0);
+        return JNI_FALSE;
+    }
+
+    rc = zmq_msg_close (&message);
+    assert (rc == 0);
+    return JNI_TRUE;
+}
+
+JNIEXPORT void JNICALL Java_org_zmq_Socket_flush (JNIEnv *env, jobject obj)
+{
+    void *s = (void*) env->GetLongField (obj, socket_handle_fid);
+    assert (s);
+
+    int rc = zmq_flush (s);
+
+    if (rc == -1) {
+        raise_exception (env, errno);
+        return ;
+    }
+}
+
+JNIEXPORT jbyteArray JNICALL Java_org_zmq_Socket_recv (JNIEnv *env, jobject obj,
+    jlong flags)
+{
+    void *s = (void*) env->GetLongField (obj, socket_handle_fid);
+    assert (s);
+
+    zmq_msg_t message;
+    zmq_msg_init (&message);
+    int rc = zmq_recv (s, &message, (int) flags);
+
+    if (rc == -1 && errno == EAGAIN) {
+        zmq_msg_close (&message);
         return NULL;
     }
 
-    return msg;
+    if (rc == -1) {
+        raise_exception (env, errno);
+        zmq_msg_close (&message);
+        return NULL;
+    }
+
+    jbyteArray data = env->NewByteArray (zmq_msg_size (&message));
+    assert (data);
+    env->SetByteArrayRegion (data, 0, zmq_msg_size (&message),
+        (jbyte*) zmq_msg_data (&message));
+
+    return data;
 }

java/org/zmq/Context.java

@@ -34,6 +34,9 @@ public class Context {
         construct (appThreads, ioThreads);
     }
 
+    /**
+     * Internal function. Do not use directly!
+     */
     public native long createSocket (int type);
 
     /** Initialize the JNI interface */

java/org/zmq/Message.java

@@ -1,66 +0,0 @@
-/*
-    Copyright (c) 2007-2009 FastMQ Inc.
-
-    This file is part of 0MQ.
-
-    0MQ is free software; you can redistribute it and/or modify it under
-    the terms of the Lesser GNU General Public License as published by
-    the Free Software Foundation; either version 3 of the License, or
-    (at your option) any later version.
-
-    0MQ is distributed in the hope that it will be useful,
-    but WITHOUT ANY WARRANTY; without even the implied warranty of
-    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-    Lesser GNU General Public License for more details.
-
-    You should have received a copy of the Lesser GNU General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
-*/
-
-package org.zmq;
-
-public class Message {
-    static {
-        System.loadLibrary("jzmq");
-    }
-
-    /**
-     * Class constructor.
-     */
-    public Message () {
-        construct ();
-    }
-
-    public Message (byte [] payload) {
-        constructWithData (payload);
-    }
-
-    /**
-     * Get message payload.
-     */
-    public native byte [] getMsgPayload ();
-
-    /**
-     * Get message type.
-     */
-    public native int getMsgType ();
-
-    /**
-     * Get low-level message handler.
-     */
-    public long getMsgHandle () {
-        return msgHandle;
-    }
-
-    /** Initialize the JNI interface */
-    protected native void construct ();
-
-    protected native void constructWithData (byte [] payload);
-
-    /** Free resources used by JNI driver. */
-    protected native void finalize ();
-
-    /** Opaque data used by JNI driver. */
-    private long msgHandle;
-}
-

java/org/zmq/Socket.java

@@ -19,26 +19,26 @@
 
 package org.zmq;
 
-public class Socket {
+public class Socket
+{
+
     static {
         System.loadLibrary("jzmq");
     }
 
-    public static final int ZMQ_MAX_VSM_SIZE = 30;
+    public static final int NOBLOCK = 1;
 
-    public static final int ZMQ_GAP = 1;
+    public static final int NOFLUSH = 2;
 
-    public static final int ZMQ_DELIMITER = 31;
+    public static final int P2P = 0;
 
-    public static final int ZMQ_NOBLOCK = 1;
+    public static final int PUB = 1;
 
-    public static final int ZMQ_NOFLUSH = 2;
+    public static final int SUB = 2;
 
-    public static final int ZMQ_P2P = 0;
+    public static final int REQ = 3;
 
-    public static final int ZMQ_PUB = 1;
+    public static final int REP = 4;
-
-    public static final int ZMQ_SUB = 2;
 
     /**
      * Class constructor.
@@ -47,7 +47,6 @@ public class Socket {
      * @param type
      */
     public Socket (Context context, int type) {
-        ctx = context;
         construct (context, type);
     }
 
@@ -94,37 +93,39 @@ public class Socket {
     public native void setIdentity (String identity);
 
     /**
+     * Bind to network interface. Start listening for new connections.
+     *
      * @param addr
      */
     public native void bind (String addr);
 
     /**
-     * Connect.
+     * Connect to remote application.
      *
      * @param addr
      */
     public native void connect (String addr);
 
     /**
-     * Send.
+     * Send the message.
      *
-     * @param message
+     * @param msg
-     * @param block
+     * @param flags
      */
-    public native int send (Message msg, long flags);
+    public native boolean send (byte [] msg, long flags);
 
     /**
-     * Flush all messages sent with flush flag false down the stream.
+     * Flush the messages down the stream.
      */
     public native void flush ();
 
     /**
      * Receive message.
      *
-     * @param block
+     * @param flags
      * @return
      */
-    public native Message recv (long flags);
+    public native byte [] recv (long flags);
 
     /** Initialize JNI driver */
     protected native void construct (Context context, int type);
@@ -132,9 +133,6 @@ public class Socket {
     /** Free all resources used by JNI driver. */
     protected native void finalize ();
 
-    /** Keep reference to ZMQ context so it is not garbage collected */
-    private Context ctx;
-
     /** Opaque data used by JNI driver. */
     private long socketHandle;
 

perf/cpp/local_thr.cpp

@@ -49,7 +49,7 @@ int main (int argc, char *argv [])
     int rc = gettimeofday (&start, NULL);
     assert (rc == 0);
 
-    for (int i = 0; i != message_count - 1; i++) {
+    for (int i = 1; i != message_count; i++) {
         s.recv (&msg);
         assert (msg.size () == message_size);
     }

perf/cpp/remote_lat.cpp

@@ -58,13 +58,13 @@ int main (int argc, char *argv [])
     end.tv_sec -= start.tv_sec;
     start.tv_sec = 0;
 
-    double usec_elapsed = (end.tv_sec * 1000000 + end.tv_usec) -
+    double elapsed = (end.tv_sec * 1000000 + end.tv_usec) -
         (start.tv_sec * 1000000 + start.tv_usec);
-    double latency = usec_elapsed / (roundtrip_count * 2);
+    double latency = elapsed / (roundtrip_count * 2);
 
     printf ("message size: %d [B]\n", (int) message_size);
     printf ("roundtrip count: %d\n", (int) roundtrip_count);
-    printf ("average latency: %.3f [us]\n", (double) latency);
+    printf ("mean latency: %.3f [us]\n", (double) latency);
 
     return 0;
 }

perf/java/local_lat.java

@@ -0,0 +1,55 @@
+/*
+    Copyright (c) 2007-2009 FastMQ Inc.
+
+    This file is part of 0MQ.
+
+    0MQ is free software; you can redistribute it and/or modify it under
+    the terms of the Lesser GNU General Public License as published by
+    the Free Software Foundation; either version 3 of the License, or
+    (at your option) any later version.
+
+    0MQ is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    Lesser GNU General Public License for more details.
+
+    You should have received a copy of the Lesser GNU General Public License
+    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+*/
+
+import org.zmq.*;
+
+class local_lat
+{
+     public static void main (String [] args)
+     {
+         if (args.length != 3) {
+             System.out.println ("usage: local_lat <bind-to> " +
+                 "<message-size> <roundtrip-count>");
+             return;
+         }
+
+         String bindTo = args [0];
+         int messageSize = Integer.parseInt (args [1]);
+         int roundtripCount = Integer.parseInt (args [2]);
+
+         org.zmq.Context ctx = new org.zmq.Context (1, 1);
+
+         org.zmq.Socket s = new org.zmq.Socket (ctx, org.zmq.Socket.REP);
+         s.bind (bindTo);
+
+         for (int i = 0; i != roundtripCount; i++) {
+             byte [] data = s.recv (0);
+             assert (data.length == messageSize);
+             s.send (data, 0);
+         }
+
+         try {
+             Thread.sleep (1000);
+         }
+         catch (InterruptedException e) {
+             e.printStackTrace ();
+         }
+
+     }
+}

perf/java/local_thr.java

@@ -0,0 +1,65 @@
+/*
+    Copyright (c) 2007-2009 FastMQ Inc.
+
+    This file is part of 0MQ.
+
+    0MQ is free software; you can redistribute it and/or modify it under
+    the terms of the Lesser GNU General Public License as published by
+    the Free Software Foundation; either version 3 of the License, or
+    (at your option) any later version.
+
+    0MQ is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    Lesser GNU General Public License for more details.
+
+    You should have received a copy of the Lesser GNU General Public License
+    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+*/
+
+import org.zmq.*;
+
+class local_thr
+{
+     public static void main (String [] args)
+     {
+         if (args.length != 3) {
+             System.out.println ("usage: local_thr <bind-to> " +
+                 "<message size> <message count>");
+             return;
+         }
+
+         String bindTo = args [0];
+         long messageSize = Integer.parseInt (args [1]);
+         long messageCount = Integer.parseInt (args [2]);
+
+         org.zmq.Context ctx = new org.zmq.Context (1, 1);
+
+         org.zmq.Socket s = new org.zmq.Socket (ctx, org.zmq.Socket.SUB);
+         s.bind (bindTo);
+
+         byte [] data = s.recv (0);
+         assert (data.length == messageSize);
+
+         long start = System.currentTimeMillis ();
+
+         for (int i = 1; i != messageCount; i ++) {
+             data = s.recv (0);
+             assert (data.length == messageSize);
+         }
+
+         long end = System.currentTimeMillis ();
+
+         long elapsed = (end - start) * 1000;
+         if (elapsed == 0)
+             elapsed = 1;
+
+         long throughput = messageCount * 1000000 / elapsed;
+         double megabits = (double) (throughput * messageSize * 8) / 1000000;
+
+         System.out.println ("message size: " + messageSize + " [B]");
+         System.out.println ("message count: " + messageCount);
+         System.out.println ("mean throughput: " + throughput + "[msg/s]");
+         System.out.println ("mean throughput: " + megabits + "[Mb/s]");        
+     }
+}

perf/java/remote_lat.java

@@ -0,0 +1,60 @@
+/*
+    Copyright (c) 2007-2009 FastMQ Inc.
+
+    This file is part of 0MQ.
+
+    0MQ is free software; you can redistribute it and/or modify it under
+    the terms of the Lesser GNU General Public License as published by
+    the Free Software Foundation; either version 3 of the License, or
+    (at your option) any later version.
+
+    0MQ is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    Lesser GNU General Public License for more details.
+
+    You should have received a copy of the Lesser GNU General Public License
+    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+*/
+
+import org.zmq.*;
+
+class remote_lat
+{
+     public static void main (String [] args)
+     {
+         if (args.length != 3) {
+             System.out.println ("usage: remote_lat <connect-to> " +
+                 "<message size> <roundtrip count>");
+             return;
+         }
+
+         String connectTo = args [0];
+         int messageSize = Integer.parseInt (args [1]);
+         int roundtripCount = Integer.parseInt (args [2]);
+
+         org.zmq.Context ctx = new org.zmq.Context (1, 1);
+
+         org.zmq.Socket s = new org.zmq.Socket (ctx, org.zmq.Socket.REQ);
+         s.connect (connectTo);
+
+         long start = System.currentTimeMillis ();
+
+         byte data [] = new byte [messageSize];
+         for (int i = 0; i != roundtripCount; i ++) {
+             s.send (data, 0);
+             data = s.recv (0);
+             assert (data.length == messageSize);
+         }
+
+         long end = System.currentTimeMillis ();
+
+         long elapsed = (end - start) * 1000;
+         double latency = (double) elapsed / roundtripCount / 2;
+
+         System.out.println ("message size: " + messageSize + " [B]");
+         System.out.println ("roundtrip count: " + roundtripCount);
+         System.out.println ("mean latency: " + latency + " [us]");
+     }
+}
+

perf/java/remote_thr.java

@@ -0,0 +1,53 @@
+/*
+    Copyright (c) 2007-2009 FastMQ Inc.
+
+    This file is part of 0MQ.
+
+    0MQ is free software; you can redistribute it and/or modify it under
+    the terms of the Lesser GNU General Public License as published by
+    the Free Software Foundation; either version 3 of the License, or
+    (at your option) any later version.
+
+    0MQ is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    Lesser GNU General Public License for more details.
+
+    You should have received a copy of the Lesser GNU General Public License
+    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+*/
+
+import org.zmq.*;
+
+class remote_thr
+{
+     public static void main (String [] args)
+     {
+         if (args.length != 3) {
+             System.out.println ("usage: remote_thr <connect-to> " +
+                 "<message-size> <message-count>");
+             return;
+         }
+
+         //  Parse the command line arguments.
+         String connectTo = args [0];
+         int messageSize = Integer.parseInt (args [1]);
+         int messageCount = Integer.parseInt (args [2]);
+
+         org.zmq.Context ctx = new org.zmq.Context (1, 1);
+
+         org.zmq.Socket s = new org.zmq.Socket (ctx, org.zmq.Socket.PUB);
+         s.connect (connectTo);
+
+         byte msg [] = new byte [messageSize];
+         for (int i = 0; i != messageCount; i++)
+             s.send (msg, 0);
+
+         try {
+             Thread.sleep (10000);
+         }
+         catch (InterruptedException e) {
+             e.printStackTrace ();
+         }
+    }
+}