new hard disk benchmark tool
This commit is contained in:
Dennis Luxen
parent
3cf72e93e6
commit
8a008d1808
@ -163,4 +163,6 @@ if(WITH_TOOLS)
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endif(GDAL_FOUND)
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add_executable ( osrm-cli Tools/simpleclient.cpp )
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target_link_libraries( osrm-cli ${Boost_LIBRARIES} OSRM UUID )
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add_executable ( osrm-io-benchmark Tools/io-benchmark.cpp )
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target_link_libraries( osrm-io-benchmark ${Boost_LIBRARIES} )
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endif(WITH_TOOLS)
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207
Tools/io-benchmark.cpp
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207
Tools/io-benchmark.cpp
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@ -0,0 +1,207 @@
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/*
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open source routing machine
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Copyright (C) Dennis Luxen, 2010
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU AFFERO General Public License as published by
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the Free Software Foundation; either version 3 of the License, or
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any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU Affero General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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or see http://www.gnu.org/licenses/agpl.txt.
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*/
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#include "../Util/OSRMException.h"
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#include "../Util/SimpleLogger.h"
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#include "../Util/TimingUtil.h"
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#include <boost/filesystem.hpp>
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#include <boost/filesystem/fstream.hpp>
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#include <boost/ref.hpp>
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#include <cmath>
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#include <cstdlib>
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#include <algorithm>
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#include <numeric>
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#include <vector>
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const unsigned number_of_elements = 268435456;
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int main (int argc, char * argv[]) {
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LogPolicy::GetInstance().Unmute();
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try {
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SimpleLogger().Write(logDEBUG) << "starting up engines, compiled at " <<
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__DATE__ << ", " __TIME__;
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if( 1 == argc ) {
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SimpleLogger().Write(logWARNING) <<
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"usage: " << argv[0] << " /path/on/device";
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return -1;
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}
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//create file to test
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boost::filesystem::path test_path = boost::filesystem::path(argv[1]);
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test_path /= "osrm.tst";
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SimpleLogger().Write(logDEBUG) <<
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"temporary file: " << test_path.string();
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if( boost::filesystem::exists(test_path) ) {
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boost::filesystem::remove(test_path);
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SimpleLogger().Write() << "removing temporary files";
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}
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SimpleLogger().Write(logDEBUG) << "Allocating 2GB in RAM";
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std::vector<unsigned> primary_vector(number_of_elements, 0);
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std::vector<unsigned> secondary_vector(number_of_elements, 0);
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SimpleLogger().Write(logDEBUG) << "fill primary vector with data";
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std::srand ( 37337 );
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std::generate (primary_vector.begin(), primary_vector.end(), std::rand);
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std::vector<double> timing_results_1013, timing_results_random;
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SimpleLogger().Write(logDEBUG) <<
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"writing " << number_of_elements*sizeof(unsigned) << " bytes";
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//write 1GB to random filename, time everything
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boost::filesystem::ofstream test_stream(test_path, std::ios::binary);
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double time1 = get_timestamp();
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test_stream.write(
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(char *)&primary_vector[0],
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number_of_elements*sizeof(unsigned)
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);
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double time2 = get_timestamp();
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test_stream.close();
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SimpleLogger().Write(logDEBUG) <<
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"writing 1GB took " << (time2-time1)*1000 << "ms, " <<
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1024*1024/((time2-time1)*1000) << "MB/sec";
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SimpleLogger().Write(logDEBUG) <<
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"reading " << number_of_elements*sizeof(unsigned) << " bytes";
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//read and check 1GB of random data, time everything
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boost::filesystem::ifstream read_stream(test_path, std::ios::binary);
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time1 = get_timestamp();
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read_stream.read(
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(char *)&secondary_vector[0],
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number_of_elements*sizeof(unsigned)
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);
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time2 = get_timestamp();
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SimpleLogger().Write(logDEBUG) <<
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"reading 1GB took " << (time2-time1)*1000 << "ms, " <<
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1024*1024/((time2-time1)*1000) << "MB/sec";
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SimpleLogger().Write(logDEBUG) << "checking data for correctness";
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if(!std::equal(
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primary_vector.begin(),
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primary_vector.end(),
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secondary_vector.begin()
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)
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) {
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throw OSRMException("reading data failed");
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}
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//removing any temporary data
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std::vector<unsigned>().swap(primary_vector);
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std::vector<unsigned>().swap(secondary_vector);
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//TODO: make striped reads of various sizes, log stuff to make plot
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SimpleLogger().Write(logDEBUG) << "performing 1000 gapped I/Os";
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unsigned single_element = 0;
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//read every 268435'th byte, time each I/O seperately
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for(unsigned i = 0; i < number_of_elements; i+=268435) {
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time1 = get_timestamp();
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read_stream.seekg(i*sizeof(unsigned));
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read_stream.read( (char*)&single_element, sizeof(unsigned));
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time2 = get_timestamp();
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timing_results_1013.push_back((time2-time1));
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}
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SimpleLogger().Write(logDEBUG) << "Performing gapped statistics";
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//print simple statistics: min, max, median, variance
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std::sort(timing_results_1013.begin(), timing_results_1013.end());
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double primary_sum = std::accumulate(
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timing_results_1013.begin(),
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timing_results_1013.end(),
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0.0
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);
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double primary_mean = primary_sum / timing_results_1013.size();
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double primary_sq_sum = std::inner_product(
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timing_results_1013.begin(),
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timing_results_1013.end(),
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timing_results_1013.begin(),
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0.0
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);
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double primary_stdev = std::sqrt(
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primary_sq_sum / timing_results_1013.size() -
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(primary_mean * primary_mean)
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);
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SimpleLogger().Write() << "gapped I/O: " <<
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"min: " << timing_results_1013.front()*1000 << ", " <<
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"max: " << timing_results_1013.back()*1000 << ", " <<
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"mean: " << primary_mean*1000 << ", " <<
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"dev: " << primary_stdev*1000;
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SimpleLogger().Write(logDEBUG) << "performing 1000 random I/Os";
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//make 1000 random access, time each I/O seperately
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for(unsigned i = 0; i < 1000; ++i) {
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unsigned element_to_read = std::rand()%number_of_elements;
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time1 = get_timestamp();
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read_stream.seekg(element_to_read*sizeof(unsigned));
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read_stream.read( (char*)&single_element, sizeof(unsigned));
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time2 = get_timestamp();
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timing_results_random.push_back((time2-time1));
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if(0. == timing_results_random.back()) {
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// SimpleLogger().Write() << "logged zero time at I/O " << i;
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}
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}
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SimpleLogger().Write(logDEBUG) << "Performing random statistics";
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std::sort(timing_results_random.begin(), timing_results_random.end());
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double secondary_sum = std::accumulate(
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timing_results_random.begin(),
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timing_results_random.end(),
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0.0
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);
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double secondary_mean = secondary_sum / timing_results_random.size();
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double secondary_sq_sum = std::inner_product(
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timing_results_random.begin(),
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timing_results_random.end(),
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timing_results_random.begin(),
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0.0
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);
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double secondary_stdev = std::sqrt(
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secondary_sq_sum / timing_results_random.size() -
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(secondary_mean * secondary_mean)
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);
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SimpleLogger().Write() << "random I/O: " <<
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"min: " << timing_results_random.front()*1000 << ", " <<
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"max: " << timing_results_random.back()*1000 << ", " <<
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"mean: " << secondary_mean*1000 << ", " <<
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"dev: " << secondary_stdev*1000;
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if( boost::filesystem::exists(test_path) ) {
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boost::filesystem::remove(test_path);
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SimpleLogger().Write(logDEBUG) << "removing temporary files";
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}
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} catch ( const std::exception & e ) {
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SimpleLogger().Write(logWARNING) << "caught exception: " << e.what();
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SimpleLogger().Write(logWARNING) << "cleaning up, and exiting";
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boost::filesystem::path test_path = boost::filesystem::path(argv[1]);
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test_path /= "osrm.tst";
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if(boost::filesystem::exists(test_path)) {
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boost::filesystem::remove(test_path);
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SimpleLogger().Write(logWARNING) << "removing temporary files";
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}
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return -1;
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}
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return 0;
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}
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