package de.jarnbjo.jsnappy.performance;
import java.io.File;
import java.io.RandomAccessFile;
import de.jarnbjo.jsnappy.Buffer;
import de.jarnbjo.jsnappy.SnappyCompressor;
import de.jarnbjo.jsnappy.SnappyDecompressor;
public class DecompressPerformance {
public static void main(String[] args) throws Exception {
for(int c=0; c<2; c++) {
long lall = 0, tall = 0;
for(File f : new File("resources/testdata/").listFiles()) {
RandomAccessFile raf = new RandomAccessFile(f, "r");
byte[] data = new byte[(int) raf.length()];
raf.readFully(data);
Buffer compressed = SnappyCompressor.compress(data);
long l = 0;
Buffer b = new Buffer();
int iterations = 4000;
long t0 = System.nanoTime();
for(int i=0; i<iterations; i++) {
l += SnappyDecompressor.decompress(compressed, b).getLength();
}
long t1 = System.nanoTime();
lall += l;
tall += (t1-t0);
System.out.println(f.getName() + ": " + String.format("%.2f", (l * 1000000000. / (t1-t0))/(1024*1024)));
}
System.out.println("all: " + String.format("%.2f", (lall * 1000000000. / (tall))/(1024*1024)));
System.out.println();
}
}
}