added microbenchmark tests for built-in RRset optimization

git-svn-id: svn://bind10.isc.org/svn/bind10/branches/parkinglot@585 e5f2f494-b856-4b98-b285-d166d9295462

src/bin/parkinglot/Makefile.am

@@ -9,3 +9,7 @@ parkinglot_SOURCES += builtin.h builtin.cc
 parkinglot_LDADD =  $(top_srcdir)/src/lib/dns/cpp/.libs/libdns.a
 parkinglot_LDADD += $(top_srcdir)/src/lib/config/cpp/libclient.a
 parkinglot_LDADD += $(top_srcdir)/src/lib/cc/cpp/libcc.a
+
+bin_PROGRAMS += builtin_bench
+builtin_bench_SOURCES = builtin_bench.cc builtin.h builtin.cc
+builtin_bench_LDADD = $(top_srcdir)/src/lib/dns/cpp/.libs/libdns.a

src/bin/parkinglot/builtin_bench.cc

@@ -0,0 +1,160 @@
+// Copyright (C) 2010  Internet Systems Consortium, Inc. ("ISC")
+//
+// Permission to use, copy, modify, and/or distribute this software for any
+// purpose with or without fee is hereby granted, provided that the above
+// copyright notice and this permission notice appear in all copies.
+//
+// THE SOFTWARE IS PROVIDED "AS IS" AND ISC DISCLAIMS ALL WARRANTIES WITH
+// REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
+// AND FITNESS.  IN NO EVENT SHALL ISC BE LIABLE FOR ANY SPECIAL, DIRECT,
+// INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM
+// LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE
+// OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
+// PERFORMANCE OF THIS SOFTWARE.
+
+// $Id$
+
+#include <sys/time.h>
+
+#include <iostream>
+#include <sstream>
+
+#include <dns/cpp/buffer.h>
+#include <dns/cpp/messagerenderer.h>
+#include <dns/cpp/name.h>
+#include <dns/cpp/rdata.h>
+#include <dns/cpp/rrclass.h>
+#include <dns/cpp/rrtype.h>
+#include <dns/cpp/rrttl.h>
+#include <dns/cpp/rrset.h>
+
+#include "builtin.h"
+
+using namespace std;
+using namespace isc::dns;
+using namespace isc::dns::rdata;
+
+static const int ITERATION = 100000;
+
+namespace {
+Name authors_name("authors.bind");
+
+inline double
+tv_sub(const struct timeval& t1, const struct timeval& t2)
+{
+    struct timeval result;
+
+    result.tv_sec = t1.tv_sec - t2.tv_sec;
+    result.tv_usec = t1.tv_usec - t2.tv_usec;
+    if (result.tv_usec < 0) {
+        result.tv_usec += 1000000;
+        result.tv_sec--;
+    }
+
+    return (result.tv_sec + result.tv_usec / 1000000.0);
+}
+
+inline RRsetPtr
+getNormalRRset()
+{
+    RRsetPtr rrset = RRsetPtr(new RRset(authors_name,  RRClass::CH(),
+                                        RRType::TXT(), RRTTL(0)));
+    rrset->addRdata(generic::TXT("Han Feng"));
+    rrset->addRdata(generic::TXT("Kazunori Fujiwara"));
+    rrset->addRdata(generic::TXT("Michael Graff"));
+    rrset->addRdata(generic::TXT("Evan Hunt"));
+    rrset->addRdata(generic::TXT("Jelte Jansen"));
+    rrset->addRdata(generic::TXT("Jin Jian"));
+    rrset->addRdata(generic::TXT("JINMEI Tatuya"));
+    rrset->addRdata(generic::TXT("Naoki Kambe"));
+    rrset->addRdata(generic::TXT("Shane Kerr")); 
+    rrset->addRdata(generic::TXT("Zhang Likun"));
+    rrset->addRdata(generic::TXT("Jeremy C. Reed"));
+
+    return (rrset);
+}
+
+void
+showResult(const struct timeval& tv_begin, const struct timeval& tv_end,
+           int iteration, const char* description)
+{
+    double diff = tv_sub(tv_end, tv_begin);
+    cout << description << " " << iteration << " times in "
+         << fixed << diff << "sec ("
+         << static_cast<int>(iteration / diff) << "qps)" << endl;
+}
+}
+
+int
+main(int argc, char* argv[])
+{
+    int iteration = ITERATION;
+    if (argc > 1) {
+        istringstream(argv[1]) >> dec >> iteration;
+    }
+
+    struct timeval tv_begin, tv_end;
+    OutputBuffer buffer(512);
+    MessageRenderer renderer(buffer);
+
+    //
+    // Benchmark for rendering an optimized pre-format RRset
+    //
+    gettimeofday(&tv_begin, NULL);
+    for (int i = 0; i < iteration; ++i) {
+        renderer.clear();
+        renderer.skip(12);
+        renderer.writeName(authors_name);
+        RRsetPtr rrset_optimized = getBuiltinAuthors().getAnswer();
+        rrset_optimized->toWire(renderer);
+    }
+    gettimeofday(&tv_end, NULL);
+    showResult(tv_begin, tv_end, iteration, "Rendered optimized RRset");
+
+    vector<unsigned char> data(buffer.getLength());
+    memcpy(&data[0], buffer.getData(), buffer.getLength());
+
+    //
+    // Benchmark for rendering a general purpose RRset of the same content
+    //
+    RRsetPtr rrset_normal = getNormalRRset();
+    gettimeofday(&tv_begin, NULL);
+    for (int i = 0; i < iteration; ++i) {
+        renderer.clear();
+        renderer.skip(12);
+        renderer.writeName(authors_name);
+        rrset_normal->toWire(renderer);
+    }
+    gettimeofday(&tv_end, NULL);
+    showResult(tv_begin, tv_end, iteration, "Rendered normal RRset");
+
+    // Confirm the two sets of output are identical.
+    if (data.size() != buffer.getLength() ||
+        memcmp(&data[0], buffer.getData(), buffer.getLength())) {
+        cerr << "Rendered data mismatch" << endl;
+        return (1);
+    }
+
+    //
+    // Benchmark for rendering a general purpose RRset of the same content
+    //
+    gettimeofday(&tv_begin, NULL);
+    for (int i = 0; i < iteration; ++i) {
+        renderer.clear();
+        renderer.skip(12);
+        renderer.writeName(authors_name);
+        getNormalRRset()->toWire(renderer);
+    }
+    gettimeofday(&tv_end, NULL);
+    showResult(tv_begin, tv_end, iteration,
+               "Rendered normal RRset with fromText");
+
+    // Confirm the two sets of output are identical.
+    if (data.size() != buffer.getLength() ||
+        memcmp(&data[0], buffer.getData(), buffer.getLength())) {
+        cerr << "Rendered data mismatch" << endl;
+        return (1);
+    }
+
+    return (0);
+}