/**
* Copyright 2013, Landz and its contributors. All rights reserved.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package z.offheap;
import org.junit.Rule;
import org.junit.Test;
import org.junit.rules.TestRule;
import z.testware.benchmark.BenchmarkOptions;
import z.testware.benchmark.BenchmarkRule;
import static z.util.Unsafes.*;
/**
* Created by jin on 8/28/13.
*/
public class BasicBenchPerf {
public static final int COUNT = 10_000_000;
public static final int SIZE_128k = 128 * 1024;
public static final int SIZE_260k = 260 * 1024;
public static final int SIZE_200k = 200 * 1024;
@Rule
public TestRule benchmarkRun = new BenchmarkRule();
@Test
@BenchmarkOptions(benchmarkRounds = 2, warmupRounds = 2)
public void allocateAndFreeMemoryCost1024() {
for (int i = 0; i < COUNT; i++) {
long address = UNSAFE.allocateMemory(1024);
// address++;
// address--;
UNSAFE.freeMemory(address);
}
}
@Test
@BenchmarkOptions(benchmarkRounds = 2, warmupRounds = 2)
public void allocateAndFreeMemoryCost65536() {
for (int i = 0; i < COUNT; i++) {
long address = UNSAFE.allocateMemory(65536);
// address++;
// address--;
UNSAFE.freeMemory(address);
}
}
@Test
@BenchmarkOptions(benchmarkRounds = 2, warmupRounds = 2)
public void allocateAndFreeMemoryCost128k() {
for (int i = 0; i < COUNT; i++) {
long address = UNSAFE.allocateMemory(SIZE_128k);
// address++;
// address--;
UNSAFE.freeMemory(address);
}
}
@Test
@BenchmarkOptions(benchmarkRounds = 2, warmupRounds = 2)
public void allocateAndFreeMemoryCost200k() {
for (int i = 0; i < 1000_000; i++) {
long address = UNSAFE.allocateMemory(SIZE_200k);
// address++;
// address--;
UNSAFE.freeMemory(address);
}
}
@Test
@BenchmarkOptions(benchmarkRounds = 2, warmupRounds = 2)
/**
* ?:
* < 128K use glibc brk
* > 128K use mmap
* speed: 100x diff
*
* malloc/malloc.c:
* (DEFAULT_MMAP_THRESHOLD_MAX): For 32-bit platforms define as 512KFor 64-bit platforms as 32MB.
*/
public void allocateAndFreeMemoryCost260k() {
//XX: COUNT -> COUNT/10
for (int i = 0; i < 1000_000; i++) {
long address = UNSAFE.allocateMemory(SIZE_260k);
// address++;
// address--;
UNSAFE.freeMemory(address);
}
}
}