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Output reorder, also shows median

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This commit is contained in:
Dennis Luxen 2013-09-04 14:26:20 +02:00
parent 8a008d1808
commit 9ee422e6ba
1 changed files with 6 additions and 5 deletions
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11
Tools/io-benchmark.cpp
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@ -111,11 +111,10 @@ int main (int argc, char * argv[]) {
std::vector<unsigned>().swap(primary_vector);
std::vector<unsigned>().swap(secondary_vector);
//TODO: make striped reads of various sizes, log stuff to make plot
SimpleLogger().Write(logDEBUG) << "performing 1000 gapped I/Os";
SimpleLogger().Write(logDEBUG) << "performing 1000+/-1 gapped I/Os";
unsigned single_element = 0;
//read every 268435'th byte, time each I/O seperately
for(unsigned i = 0; i < number_of_elements; i+=268435) {
for(unsigned i = 0; i < number_of_elements; i+=(number_of_elements/1000)) {
time1 = get_timestamp();
read_stream.seekg(i*sizeof(unsigned));
read_stream.read( (char*)&single_element, sizeof(unsigned));
@ -145,8 +144,9 @@ int main (int argc, char * argv[]) {
SimpleLogger().Write() << "gapped I/O: " <<
"min: " << timing_results_1013.front()*1000 << ", " <<
"max: " << timing_results_1013.back()*1000 << ", " <<
"mean: " << primary_mean*1000 << ", " <<
"med: " << timing_results_1013[timing_results_1013.size()/2]*1000 << ", " <<
"max: " << timing_results_1013.back()*1000 << ", " <<
"dev: " << primary_stdev*1000;
SimpleLogger().Write(logDEBUG) << "performing 1000 random I/Os";
@ -185,8 +185,9 @@ int main (int argc, char * argv[]) {
SimpleLogger().Write() << "random I/O: " <<
"min: " << timing_results_random.front()*1000 << ", " <<
"max: " << timing_results_random.back()*1000 << ", " <<
"mean: " << secondary_mean*1000 << ", " <<
"med: " << timing_results_random[timing_results_random.size()/2]*1000 << ", " <<
"max: " << timing_results_random.back()*1000 << ", " <<
"dev: " << secondary_stdev*1000;
if( boost::filesystem::exists(test_path) ) {
boost::filesystem::remove(test_path);