Application: gvSIG desktop » gvSIG raster

package org.gvsig.raster.cache.buffer.impl.others;

import java.io.IOException;

import junit.framework.TestCase;

import org.gvsig.jgdal.GdalException;

import org.gvsig.raster.cache.buffer.Buffer;

import org.gvsig.raster.cache.buffer.exception.OperationNotSupportedException;

import org.gvsig.raster.cache.buffer.exception.ProcessInterruptedException;

import org.gvsig.raster.cache.buffer.impl.BufferCacheManagerImpl;

import org.gvsig.raster.cache.buffer.impl.io.GdalRead;

import org.gvsig.raster.cache.buffer.impl.memory.RasterMemoryBuffer;

import org.gvsig.raster.cache.buffer.impl.stripecache.horizontal.RasterCacheBuffer;

/**

 * Performance Test: It loads a complete image of 65MB in a cached buffer and after read the

 * same image in a memory buffer. For this test we use a small size of cache (2MB) and a size of

 * one page of 0.2MB

 *  

 * REPEAT = 1

 * Using setValues

 * Time cached: 1538 ms

 * Time memory: 1163 ms

 * 

 * REPEAT = 1

 * Using setLines

 * Time cached: 198 ms

 * Time memory: 171 ms

 *

 * REPEAT = 10

 * Using setValues

 * Time cached: 14317 ms

 * Time memory: 11168 ms

 * 

 * REPEAT = 10

 * Using setLines

 * Time cached: 1944 ms

 * Time memory: 1209 ms

 * 

 * Intel(R) Core(TM)2 CPU E8400  @ 3.00GHz

 * 2GB RAM DDR3 1066

 * HDD ATA 133

 * Linux Ubuntu 10.04 kernel 2.6.24

 * 

 * @author Nacho Brodin (nachobrodin@gmail.com)

 */

public class TestCacheVsMemory extends TestCase {

        private String rasterIn = "./src/test/resources/image/001m09_1_0.tif";

        private static int REPEAT = 10;

        public void start() {

                this.setUp();

                this.testStack();

        }

        public void setUp() {

                System.err.println("CacheVsMemory running...");

        }

        public void testStack() {

                try {

                        GdalRead input = null;

                        //Read input data

                        input = new GdalRead(rasterIn);

                        Object dataIn = input.readBlock(0, 0, input.getWidth(), input.getHeight());

                        //Reducimos el tama?o de la cache para una prueba con menos datos

                        BufferCacheManagerImpl.cacheSize = 25;

                        BufferCacheManagerImpl.pageSize = 2;

                        //****************CACHE**********************

                        long t1 = System.currentTimeMillis();

                        for (int iTimes = 0; iTimes < REPEAT; iTimes++) {

                                //Create Buffer

                                Buffer buf1 = new RasterCacheBuffer(input.getRasterBufTypeFromGdalType(input.getDataType()), 

                                                input.getWidth(), 

                                                input.getHeight(),

                                                input.getBandCount());

                                //Set data to buffer

                                setValues(dataIn, buf1);

                                buf1.free();

                        }

                        long t2 = System.currentTimeMillis();

                        System.out.println("Tiempo StripeCache : " + (t2 - t1) + " milisegundos");

                        //****************FIN CACHE******************

                        //****************MEMO***********************

                        t1 = System.currentTimeMillis();

                        for (int iTimes = 0; iTimes < REPEAT; iTimes++) {

                                //Create Buffer

                                Buffer buf2 = new RasterMemoryBuffer(input.getRasterBufTypeFromGdalType(input.getDataType()), 

                                                input.getWidth(), 

                                                input.getHeight(),

                                                input.getBandCount(),

                                                true);

                                //Set data to buffer

                                setValues(dataIn, buf2);

                                buf2.free();

                        }

                        t2 = System.currentTimeMillis();

                        System.out.println("Tiempo Memoria : " + (t2 - t1) + " milisegundos");

                        //****************FIN MEMO******************

                        input.close();

                } catch (GdalException e) {

                        e.printStackTrace();

                } catch (IOException e) {

                        e.printStackTrace();

                } catch (ProcessInterruptedException e) {

                        e.printStackTrace();

                } catch (OperationNotSupportedException e) {

                        e.printStackTrace();

                }

        }

        public void setValues(Object dataIn, Buffer buf) throws OperationNotSupportedException {

                if(dataIn instanceof byte[][][]) {

                    byte[][][] d = (byte[][][])dataIn;

                    for (int band = 0; band < d.length; band++) {

                                for (int row = 0; row < d[band].length; row++) {

                                        for (int col = 0; col < d[band][row].length; col++) {

                                                buf.setElem(row, col, band, (byte)d[band][row][col]);

                                        }

                                }

                        }

            }

        }

        public void setLines(Object dataIn, Buffer buf) throws OperationNotSupportedException {

                if(dataIn instanceof byte[][][]) {

                    byte[][][] d = (byte[][][])dataIn;

                    for (int iBand = 0; iBand < d.length; iBand++) {

                                for (int row = 0; row < d[iBand].length; row++) {

                                        buf.setLineInBandByte(d[iBand][row], row, iBand);

                                }

                        }

            }

        }

}