Created
April 22, 2015 04:14
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package io.netty.microbench.headers; | |
import io.netty.handler.codec.http.DefaultHttpHeaders; | |
import io.netty.handler.codec.http2.DefaultHttp2Headers; | |
import io.netty.microbench.headers.ExampleHeaders.HeaderExample; | |
import io.netty.util.AsciiString; | |
import io.netty.util.ByteString; | |
import io.netty.util.CharsetUtil; | |
import org.openjdk.jol.info.GraphLayout; | |
import java.util.Map; | |
import java.util.Map.Entry; | |
public class MemoryUsage { | |
private static class LowerBound { | |
private ByteString[] keys; | |
private ByteString[] values; | |
private int idx; | |
public LowerBound(int size) { | |
keys = new ByteString[size]; | |
values = new ByteString[size]; | |
} | |
public void add(ByteString key, ByteString value) { | |
keys[idx] = key; | |
values[idx] = value; | |
idx++; | |
} | |
} | |
public static void main(String... args) { | |
for (Entry<HeaderExample, Map<String, String>> header : ExampleHeaders.EXAMPLES.entrySet()) { | |
DefaultHttpHeaders http = new DefaultHttpHeaders(false); | |
DefaultHttp2Headers http2 = new DefaultHttp2Headers(); | |
LowerBound lower = new LowerBound(header.getValue().size()); | |
for (Entry<String, String> entry : header.getValue().entrySet()) { | |
http.add(new AsciiString(entry.getKey()), new AsciiString(entry.getValue())); | |
http2.add(new ByteString(entry.getKey(), CharsetUtil.US_ASCII), new ByteString(entry.getValue(), CharsetUtil.US_ASCII)); | |
lower.add(new ByteString(entry.getKey(), CharsetUtil.US_ASCII), new ByteString(entry.getValue(), CharsetUtil.US_ASCII)); | |
} | |
System.out.println(header.getKey().toString()); | |
System.out.println("HTTP: " + GraphLayout.parseInstance(http).totalSize()); | |
System.out.println("HTTP2: " + GraphLayout.parseInstance(http2).totalSize()); | |
System.out.println("LOWER: " + GraphLayout.parseInstance(lower).totalSize()); | |
} | |
} | |
} |
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