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- /*
- * Copyright (C) 2017, Google Inc.
- * and other copyright owners as documented in the project's IP log.
- *
- * This program and the accompanying materials are made available
- * under the terms of the Eclipse Distribution License v1.0 which
- * accompanies this distribution, is reproduced below, and is
- * available at http://www.eclipse.org/org/documents/edl-v10.php
- *
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or
- * without modification, are permitted provided that the following
- * conditions are met:
- *
- * - Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- *
- * - Redistributions in binary form must reproduce the above
- * copyright notice, this list of conditions and the following
- * disclaimer in the documentation and/or other materials provided
- * with the distribution.
- *
- * - Neither the name of the Eclipse Foundation, Inc. nor the
- * names of its contributors may be used to endorse or promote
- * products derived from this software without specific prior
- * written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
- * CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES,
- * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
- * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
- * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
- * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
- * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
- * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
- * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
- * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
- * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
- * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
- * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
-
- package org.eclipse.jgit.pgm.debug;
-
- import static java.nio.charset.StandardCharsets.UTF_8;
- import static org.eclipse.jgit.lib.Constants.HEAD;
- import static org.eclipse.jgit.lib.Constants.MASTER;
- import static org.eclipse.jgit.lib.Constants.R_HEADS;
- import static org.eclipse.jgit.lib.Ref.Storage.NEW;
- import static org.eclipse.jgit.lib.Ref.Storage.PACKED;
-
- import java.io.BufferedReader;
- import java.io.FileInputStream;
- import java.io.FileNotFoundException;
- import java.io.IOException;
- import java.io.InputStreamReader;
-
- import org.eclipse.jgit.internal.storage.io.BlockSource;
- import org.eclipse.jgit.internal.storage.reftable.RefCursor;
- import org.eclipse.jgit.internal.storage.reftable.ReftableReader;
- import org.eclipse.jgit.lib.ObjectId;
- import org.eclipse.jgit.lib.ObjectIdRef;
- import org.eclipse.jgit.lib.Ref;
- import org.eclipse.jgit.lib.SymbolicRef;
- import org.eclipse.jgit.pgm.Command;
- import org.eclipse.jgit.pgm.TextBuiltin;
- import org.eclipse.jgit.util.RefList;
- import org.kohsuke.args4j.Argument;
- import org.kohsuke.args4j.Option;
-
- @Command
- class BenchmarkReftable extends TextBuiltin {
- enum Test {
- SCAN,
- SEEK_COLD, SEEK_HOT,
- BY_ID_COLD, BY_ID_HOT;
- }
-
- @Option(name = "--tries")
- private int tries = 10;
-
- @Option(name = "--test")
- private Test test = Test.SCAN;
-
- @Option(name = "--ref")
- private String ref;
-
- @Option(name = "--object-id")
- private String objectId;
-
- @Argument(index = 0)
- private String lsRemotePath;
-
- @Argument(index = 1)
- private String reftablePath;
-
- /** {@inheritDoc} */
- @Override
- protected void run() throws Exception {
- switch (test) {
- case SCAN:
- scan();
- break;
-
- case SEEK_COLD:
- seekCold(ref);
- break;
- case SEEK_HOT:
- seekHot(ref);
- break;
-
- case BY_ID_COLD:
- byIdCold(ObjectId.fromString(objectId));
- break;
- case BY_ID_HOT:
- byIdHot(ObjectId.fromString(objectId));
- break;
- }
- }
-
- private void printf(String fmt, Object... args) throws IOException {
- errw.println(String.format(fmt, args));
- }
-
- @SuppressWarnings({ "nls", "boxing" })
- private void scan() throws Exception {
- long start, tot;
-
- start = System.currentTimeMillis();
- for (int i = 0; i < tries; i++) {
- readLsRemote();
- }
- tot = System.currentTimeMillis() - start;
- printf("%12s %10d ms %6d ms/run", "packed-refs", tot, tot / tries);
-
- start = System.currentTimeMillis();
- for (int i = 0; i < tries; i++) {
- try (FileInputStream in = new FileInputStream(reftablePath);
- BlockSource src = BlockSource.from(in);
- ReftableReader reader = new ReftableReader(src)) {
- try (RefCursor rc = reader.allRefs()) {
- while (rc.next()) {
- rc.getRef();
- }
- }
- }
- }
- tot = System.currentTimeMillis() - start;
- printf("%12s %10d ms %6d ms/run", "reftable", tot, tot / tries);
- }
-
- private RefList<Ref> readLsRemote()
- throws IOException, FileNotFoundException {
- RefList.Builder<Ref> list = new RefList.Builder<>();
- try (BufferedReader br = new BufferedReader(new InputStreamReader(
- new FileInputStream(lsRemotePath), UTF_8))) {
- Ref last = null;
- String line;
- while ((line = br.readLine()) != null) {
- ObjectId id = ObjectId.fromString(line.substring(0, 40));
- String name = line.substring(41, line.length());
- if (last != null && name.endsWith("^{}")) { //$NON-NLS-1$
- last = new ObjectIdRef.PeeledTag(PACKED, last.getName(),
- last.getObjectId(), id);
- list.set(list.size() - 1, last);
- continue;
- }
-
- if (name.equals(HEAD)) {
- last = new SymbolicRef(name, new ObjectIdRef.Unpeeled(NEW,
- R_HEADS + MASTER, null));
- } else {
- last = new ObjectIdRef.PeeledNonTag(PACKED, name, id);
- }
- list.add(last);
- }
- }
- list.sort();
- return list.toRefList();
- }
-
- @SuppressWarnings({ "nls", "boxing" })
- private void seekCold(String refName) throws Exception {
- long start, tot;
-
- int lsTries = Math.min(tries, 64);
- start = System.nanoTime();
- for (int i = 0; i < lsTries; i++) {
- readLsRemote().get(refName);
- }
- tot = System.nanoTime() - start;
- printf("%12s %10d usec %9.1f usec/run %5d runs", "packed-refs",
- tot / 1000,
- (((double) tot) / lsTries) / 1000,
- lsTries);
-
- start = System.nanoTime();
- for (int i = 0; i < tries; i++) {
- try (FileInputStream in = new FileInputStream(reftablePath);
- BlockSource src = BlockSource.from(in);
- ReftableReader reader = new ReftableReader(src)) {
- try (RefCursor rc = reader.seekRef(refName)) {
- while (rc.next()) {
- rc.getRef();
- }
- }
- }
- }
- tot = System.nanoTime() - start;
- printf("%12s %10d usec %9.1f usec/run %5d runs", "reftable",
- tot / 1000,
- (((double) tot) / tries) / 1000,
- tries);
- }
-
- @SuppressWarnings({ "nls", "boxing" })
- private void seekHot(String refName) throws Exception {
- long start, tot;
-
- int lsTries = Math.min(tries, 64);
- start = System.nanoTime();
- RefList<Ref> lsRemote = readLsRemote();
- for (int i = 0; i < lsTries; i++) {
- lsRemote.get(refName);
- }
- tot = System.nanoTime() - start;
- printf("%12s %10d usec %9.1f usec/run %5d runs", "packed-refs",
- tot / 1000, (((double) tot) / lsTries) / 1000, lsTries);
-
- start = System.nanoTime();
- try (FileInputStream in = new FileInputStream(reftablePath);
- BlockSource src = BlockSource.from(in);
- ReftableReader reader = new ReftableReader(src)) {
- for (int i = 0; i < tries; i++) {
- try (RefCursor rc = reader.seekRef(refName)) {
- while (rc.next()) {
- rc.getRef();
- }
- }
- }
- }
- tot = System.nanoTime() - start;
- printf("%12s %10d usec %9.1f usec/run %5d runs", "reftable",
- tot / 1000, (((double) tot) / tries) / 1000, tries);
- }
-
- @SuppressWarnings({ "nls", "boxing" })
- private void byIdCold(ObjectId id) throws Exception {
- long start, tot;
-
- int lsTries = Math.min(tries, 64);
- start = System.nanoTime();
- for (int i = 0; i < lsTries; i++) {
- for (Ref r : readLsRemote()) {
- if (id.equals(r.getObjectId())) {
- continue;
- }
- }
- }
- tot = System.nanoTime() - start;
- printf("%12s %10d usec %9.1f usec/run %5d runs", "packed-refs",
- tot / 1000, (((double) tot) / lsTries) / 1000, lsTries);
-
- start = System.nanoTime();
- for (int i = 0; i < tries; i++) {
- try (FileInputStream in = new FileInputStream(reftablePath);
- BlockSource src = BlockSource.from(in);
- ReftableReader reader = new ReftableReader(src)) {
- try (RefCursor rc = reader.byObjectId(id)) {
- while (rc.next()) {
- rc.getRef();
- }
- }
- }
- }
- tot = System.nanoTime() - start;
- printf("%12s %10d usec %9.1f usec/run %5d runs", "reftable",
- tot / 1000, (((double) tot) / tries) / 1000, tries);
- }
-
- @SuppressWarnings({ "nls", "boxing" })
- private void byIdHot(ObjectId id) throws Exception {
- long start, tot;
-
- int lsTries = Math.min(tries, 64);
- start = System.nanoTime();
- RefList<Ref> lsRemote = readLsRemote();
- for (int i = 0; i < lsTries; i++) {
- for (Ref r : lsRemote) {
- if (id.equals(r.getObjectId())) {
- continue;
- }
- }
- }
- tot = System.nanoTime() - start;
- printf("%12s %10d usec %9.1f usec/run %5d runs", "packed-refs",
- tot / 1000, (((double) tot) / lsTries) / 1000, lsTries);
-
- start = System.nanoTime();
- try (FileInputStream in = new FileInputStream(reftablePath);
- BlockSource src = BlockSource.from(in);
- ReftableReader reader = new ReftableReader(src)) {
- for (int i = 0; i < tries; i++) {
- try (RefCursor rc = reader.byObjectId(id)) {
- while (rc.next()) {
- rc.getRef();
- }
- }
- }
- }
- tot = System.nanoTime() - start;
- printf("%12s %10d usec %9.1f usec/run %5d runs", "reftable",
- tot / 1000, (((double) tot) / tries) / 1000, tries);
- }
- }
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