package perftest;
import java.io.ByteArrayOutputStream;
import com.fasterxml.jackson.core.*;
import com.fasterxml.jackson.databind.ObjectMapper;
import com.fasterxml.jackson.module.afterburner.AfterburnerModule;
public final class TestJvmSerPerf
{
/*
/**********************************************************
/* Actual test
/**********************************************************
*/
private final int REPS;
private TestJvmSerPerf() throws Exception
{
// Let's try to guestimate suitable size...
REPS = 20000;
}
private MediaItem buildItem()
{
MediaItem.Content content = new MediaItem.Content();
content.setPlayer(MediaItem.Content.Player.JAVA);
content.setUri("http://javaone.com/keynote.mpg");
content.setTitle("Javaone Keynote");
content.setWidth(640);
content.setHeight(480);
content.setFormat("video/mpeg4");
content.setDuration(18000000L);
content.setSize(58982400L);
content.setBitrate(262144);
content.setCopyright("None");
content.addPerson("Bill Gates");
content.addPerson("Steve Jobs");
MediaItem item = new MediaItem(content);
item.addPhoto(new MediaItem.Photo("http://javaone.com/keynote_large.jpg", "Javaone Keynote", 1024, 768, MediaItem.Photo.Size.LARGE));
item.addPhoto(new MediaItem.Photo("http://javaone.com/keynote_small.jpg", "Javaone Keynote", 320, 240, MediaItem.Photo.Size.SMALL));
return item;
}
public void test()
throws Exception
{
int i = 0;
int sum = 0;
ByteArrayOutputStream result = new ByteArrayOutputStream();
final MediaItem item = buildItem();
final JsonFactory jsonF =
new JsonFactory()
// new org.codehaus.jackson.smile.SmileFactory();
;
// ((SmileFactory) jsonF).configure(SmileGenerator.Feature.CHECK_SHARED_NAMES, false);
final ObjectMapper jsonMapper = new ObjectMapper(jsonF);
jsonMapper.registerModule(new AfterburnerModule());
// jsonMapper.configure(SerializationConfig.Feature.USE_STATIC_TYPING, true);
/*
final SmileFactory smileFactory = new SmileFactory();
smileFactory.configure(SmileGenerator.Feature.CHECK_SHARED_NAMES, true);
smileFactory.configure(SmileGenerator.Feature.CHECK_SHARED_STRING_VALUES, false);
final ObjectMapper smileMapper = new ObjectMapper(smileFactory);
*/
while (true) {
// Thread.sleep(150L);
++i;
int round = (i % 2);
// override?
// round = 0;
long curr = System.currentTimeMillis();
String msg;
switch (round) {
case 0:
msg = "Serialize, JSON/databind";
sum += testObjectSer(jsonMapper, item, REPS+REPS, result);
break;
case 1:
msg = "Serialize, JSON/manual";
sum += testObjectSer(jsonMapper.getFactory(), item, REPS+REPS, result);
break;
/*
case 2:
msg = "Serialize, Smile";
sum += testObjectSer(smileMapper, item, REPS, result);
break;
case 3:
msg = "Serialize, Smile/manual";
sum += testObjectSer(smileFactory, item, REPS+REPS, result);
break;
*/
default:
throw new Error("Internal error");
}
curr = System.currentTimeMillis() - curr;
// if (round == 0) { System.out.println(); }
System.out.println("Test '"+msg+"' -> "+curr+" msecs ("+(sum & 0xFF)+").");
if ((i & 0x1F) == 0) { // GC every 64 rounds
System.out.println("[GC]");
Thread.sleep(20L);
System.gc();
Thread.sleep(20L);
}
}
}
protected int testObjectSer(ObjectMapper mapper, Object value, int reps, ByteArrayOutputStream result)
throws Exception
{
for (int i = 0; i < reps; ++i) {
result.reset();
mapper.writeValue(result, value);
}
return result.size(); // just to get some non-optimizable number
}
protected int testObjectSer(JsonFactory jf, MediaItem value, int reps, ByteArrayOutputStream result)
throws Exception
{
for (int i = 0; i < reps; ++i) {
result.reset();
JsonGenerator jgen = jf.createGenerator(result, JsonEncoding.UTF8);
value.serialize(jgen);
jgen.close();
}
return result.size(); // just to get some non-optimizable number
}
public static void main(String[] args) throws Exception
{
new TestJvmSerPerf().test();
}
}