+++ /dev/null
-/*
- * Generate latency statistics for a configurable number of write
- * operations of configurable size.
- *
- * Created on: May 21, 2012
- * Author: Eleanor Cawthon
- *
- * This is free software; you can redistribute it and/or
- * modify it under the terms of the GNU Lesser General Public
- * License version 2.1, as published by the Free Software
- * Foundation. See file COPYING.
- */
-
-#include "include/rados/librados.hpp"
-#include "include/Context.h"
-#include "common/ceph_context.h"
-#include "common/Mutex.h"
-#include "common/Cond.h"
-#include "include/utime.h"
-#include "global/global_context.h"
-#include "common/ceph_argparse.h"
-#include "test/omap_bench.h"
-
-#include <string>
-#include <iostream>
-#include <cassert>
-#include <climits>
-#include <cmath>
-
-using namespace std;
-using ceph::bufferlist;
-
-int OmapBench::setup(int argc, const char** argv) {
- //parse key_value_store_bench args
- vector<const char*> args;
- argv_to_vec(argc,argv,args);
- for (unsigned i = 0; i < args.size(); i++) {
- if(i < args.size() - 1) {
- if (strcmp(args[i], "-t") == 0) {
- threads = atoi(args[i+1]);
- } else if (strcmp(args[i], "-o") == 0) {
- objects = atoi(args[i+1]);
- } else if (strcmp(args[i], "--entries") == 0) {
- entries_per_omap = atoi(args[i+1]);
- } else if (strcmp(args[i], "--keysize") == 0) {
- key_size = atoi(args[i+1]);
- } else if (strcmp(args[i], "--valsize") == 0) {
- value_size = atoi(args[i+1]);
- } else if (strcmp(args[i], "--inc") == 0) {
- increment = atoi(args[i+1]);
- } else if (strcmp(args[i], "--omaptype") == 0) {
- if(strcmp("rand",args[i+1]) == 0) {
- omap_generator = OmapBench::generate_non_uniform_omap;
- }
- else if (strcmp("uniform", args[i+1]) == 0) {
- omap_generator = OmapBench::generate_uniform_omap;
- }
- } else if (strcmp(args[i], "--name") == 0) {
- rados_id = args[i+1];
- }
- } else if (strcmp(args[i], "--help") == 0) {
- cout << "\nUsage: ostorebench [options]\n"
- << "Generate latency statistics for a configurable number of "
- << "key value pair operations of\n"
- << "configurable size.\n\n"
- << "OPTIONS\n"
- << " -t number of threads to use (default "<<threads;
- cout << ")\n"
- << " -o number of objects to write (default "<<objects;
- cout << ")\n"
- << " --entries number of entries per (default "
- << entries_per_omap;
- cout <<")\n"
- << " --keysize number of characters per key "
- << "(default "<<key_size;
- cout << ")\n"
- << " --valsize number of characters per value "
- << "(default "<<value_size;
- cout << ")\n"
- << " --inc specify the increment to use in the displayed "
- << "histogram (default "<<increment;
- cout << ")\n"
- << " --omaptype specify how omaps should be generated - "
- << "rand for random sizes between\n"
- << " 0 and max size, uniform for all sizes"
- << " to be specified size.\n"
- << " (default uniform)\n";
- cout << " --name the rados id to use (default "<< rados_id
- << ")\n";
- exit(1);
- }
- }
- int r = rados.init(rados_id.c_str());
- if (r < 0) {
- cout << "error during init" << std::endl;
- return r;
- }
- r = rados.conf_parse_argv(argc, argv);
- if (r < 0) {
- cout << "error during parsing args" << std::endl;
- return r;
- }
- r = rados.conf_parse_env(NULL);
- if (r < 0) {
- cout << "error during parsing env" << std::endl;
- return r;
- }
- r = rados.conf_read_file(NULL);
- if (r < 0) {
- cout << "error during read file" << std::endl;
- return r;
- }
- r = rados.connect();
- if (r < 0) {
- cout << "error during connect" << std::endl;
- return r;
- }
- r = rados.ioctx_create(pool_name.c_str(), io_ctx);
- if (r < 0) {
- cout << "error creating io ctx" << std::endl;
- rados.shutdown();
- return r;
- }
- return 0;
-}
-
-//Writer functions
-Writer::Writer(OmapBench *omap_bench) : ob(omap_bench) {
- stringstream name;
- ob->data_lock.Lock();
- name << omap_bench->prefix << ++(ob->data.started_ops);
- ob->data_lock.Unlock();
- oid = name.str();
-}
-void Writer::start_time() {
- begin_time = ceph_clock_now();
-}
-void Writer::stop_time() {
- end_time = ceph_clock_now();
-}
-double Writer::get_time() {
- return (end_time - begin_time) * 1000;
-}
-string Writer::get_oid() {
- return oid;
-}
-std::map<std::string, bufferlist> & Writer::get_omap() {
- return omap;
-}
-
-//AioWriter functions
-AioWriter::AioWriter(OmapBench *ob) : Writer(ob) {
- aioc = NULL;
-}
-AioWriter::~AioWriter() {
- if(aioc) aioc->release();
-}
-librados::AioCompletion * AioWriter::get_aioc() {
- return aioc;
-}
-void AioWriter::set_aioc(librados::callback_t complete,
- librados::callback_t safe) {
- aioc = ob->rados.aio_create_completion(this, complete, safe);
-}
-
-
-//Helper methods
-void OmapBench::aio_is_safe(rados_completion_t c, void *arg) {
- AioWriter *aiow = reinterpret_cast<AioWriter *>(arg);
- aiow->stop_time();
- Mutex * data_lock = &aiow->ob->data_lock;
- Mutex * thread_is_free_lock = &aiow->ob->thread_is_free_lock;
- Cond * thread_is_free = &aiow->ob->thread_is_free;
- int &busythreads_count = aiow->ob->busythreads_count;
- o_bench_data &data = aiow->ob->data;
- int INCREMENT = aiow->ob->increment;
- int err = aiow->get_aioc()->get_return_value();
- if (err < 0) {
- cout << "error writing AioCompletion";
- return;
- }
- double time = aiow->get_time();
- delete aiow;
- data_lock->Lock();
- data.avg_latency = (data.avg_latency * data.completed_ops + time)
- / (data.completed_ops + 1);
- data.completed_ops++;
- if (time < data.min_latency) {
- data.min_latency = time;
- }
- if (time > data.max_latency) {
- data.max_latency = time;
- }
- data.total_latency += time;
- ++(data.freq_map[time / INCREMENT]);
- if(data.freq_map[time/INCREMENT] > data.mode.second) {
- data.mode.first = time/INCREMENT;
- data.mode.second = data.freq_map[time/INCREMENT];
- }
- data_lock->Unlock();
-
- thread_is_free_lock->Lock();
- busythreads_count--;
- thread_is_free->Signal();
- thread_is_free_lock->Unlock();
-}
-
-string OmapBench::random_string(int len) {
- string ret;
- string alphanum = "0123456789"
- "ABCDEFGHIJKLMNOPQRSTUVWXYZ"
- "abcdefghijklmnopqrstuvwxyz";
-
- for (int i = 0; i < len; ++i) {
- ret.push_back(alphanum[rand() % (alphanum.size() - 1)]);
- }
-
- return ret;
-}
-
-int OmapBench::run() {
- return (((OmapBench *)this)->*OmapBench::test)(omap_generator);
-}
-
-int OmapBench::print_written_omap() {
- for (int i = 1; i <= objects; i++) {
- int err = 0;
- librados::ObjectReadOperation key_read;
- set<string> out_keys;
- map<string, bufferlist> out_vals;
- std::stringstream objstrm;
- objstrm << prefix;
- objstrm << i;
- cout << "\nPrinting omap for "<<objstrm.str() << std::endl;
- // FIXME: we ignore pmore here. this shouldn't happen for benchmark
- // keys, though, unless the OSD limit is *really* low.
- key_read.omap_get_keys2("", LONG_MAX, &out_keys, nullptr, &err);
- io_ctx.operate(objstrm.str(), &key_read, NULL);
- if (err < 0) {
- cout << "error " << err;
- cout << " getting omap key set " << std::endl;
- return err;
- }
-
- librados::ObjectReadOperation val_read;
- val_read.omap_get_vals_by_keys(out_keys, &out_vals, &err);
- if (err < 0) {
- cout << "error " << err;
- cout << " getting omap value set " << std::endl;
- return err;
- }
- io_ctx.operate(objstrm.str(), &val_read, NULL);
-
- for (set<string>::iterator iter = out_keys.begin();
- iter != out_keys.end(); ++iter) {
- cout << *iter << "\t" << (out_vals)[*iter] << std::endl;
- }
- }
- return 0;
-}
-
-void OmapBench::print_results() {
- cout << "========================================================";
- cout << "\nNumber of kvmaps written:\t" << objects;
- cout << "\nNumber of ops at once:\t" << threads;
- cout << "\nEntries per kvmap:\t\t" << entries_per_omap;
- cout << "\nCharacters per key:\t" << key_size;
- cout << "\nCharacters per val:\t" << value_size;
- cout << std::endl;
- cout << std::endl;
- cout << "Average latency:\t" << data.avg_latency;
- cout << "ms\nMinimum latency:\t" << data.min_latency;
- cout << "ms\nMaximum latency:\t" << data.max_latency;
- cout << "ms\nMode latency:\t\t"<<"between "<<data.mode.first * increment;
- cout << " and " <<data.mode.first * increment + increment;
- cout << "ms\nTotal latency:\t\t" << data.total_latency;
- cout << "ms"<<std::endl;
- cout << std::endl;
- cout << "Histogram:" << std::endl;
- for(int i = floor(data.min_latency / increment); i <
- ceil(data.max_latency / increment); i++) {
- cout << ">= "<< i * increment;
- cout << "ms";
- int spaces;
- if (i == 0) spaces = 4;
- else spaces = 3 - floor(log10(i));
- for (int j = 0; j < spaces; j++) {
- cout << " ";
- }
- cout << "[";
- for(int j = 0; j < ((data.freq_map)[i])*45/(data.mode.second); j++) {
- cout << "*";
- }
- cout << std::endl;
- }
- cout << "\n========================================================"
- << std::endl;
-}
-
-int OmapBench::write_omap_asynchronously(AioWriter *aiow,
- const std::map<std::string,bufferlist> &omap) {
- librados::ObjectWriteOperation owo;
- owo.create(false);
- owo.omap_clear();
- owo.omap_set(omap);
- aiow->start_time();
- int err = io_ctx.aio_operate(aiow->get_oid(), aiow->get_aioc(), &owo);
- if (err < 0) {
- cout << "writing omap failed with code "<<err;
- cout << std::endl;
- return err;
- }
- return 0;
-}
-
-//Omap Generators
-int OmapBench::generate_uniform_omap(const int omap_entries, const int key_size,
- const int value_size, std::map<std::string,bufferlist> * out_omap) {
- bufferlist bl;
-
- //setup omap
- for (int i = 0; i < omap_entries; i++) {
- bufferlist omap_val;
- omap_val.append(random_string(value_size));
- string key = random_string(key_size);
- (*out_omap)[key]= omap_val;
- }
- return 0;
-}
-
-int OmapBench::generate_non_uniform_omap(const int omap_entries,
- const int key_size, const int value_size,
- std::map<std::string,bufferlist> * out_omap) {
- bufferlist bl;
-
- int num_entries = rand() % omap_entries + 1;
- int key_len = rand() % key_size +1;
- int val_len = rand() % value_size +1;
-
- //setup omap
- for (int i = 0; i < num_entries; i++) {
- bufferlist omap_val;
- omap_val.append(random_string(val_len));
- string key = random_string(key_len);
- (*out_omap)[key] = omap_val;
- }
- return 0;
-}
-
-int OmapBench::generate_small_non_random_omap(const int omap_entries,
- const int key_size, const int value_size,
- std::map<std::string,bufferlist> * out_omap) {
- bufferlist bl;
- stringstream key;
-
- //setup omap
- for (int i = 0; i < omap_entries; i++) {
- bufferlist omap_val;
- omap_val.append("Value ");
- omap_val.append(i);
- key << "Key " << i;
- (*out_omap)[key.str()]= omap_val;
- }
- return 0;
-}
-
-//tests
-int OmapBench::test_write_objects_in_parallel(omap_generator_t omap_gen) {
- comp = NULL;
- AioWriter *this_aio_writer;
-
- Mutex::Locker l(thread_is_free_lock);
- for (int i = 0; i < objects; i++) {
- assert(busythreads_count <= threads);
- //wait for a writer to be free
- if (busythreads_count == threads) {
- int err = thread_is_free.Wait(thread_is_free_lock);
- assert(busythreads_count < threads);
- if (err < 0) {
- return err;
- }
- }
-
- //set up the write
- this_aio_writer = new AioWriter(this);
- this_aio_writer->set_aioc(NULL,safe);
-
- //perform the write
- busythreads_count++;
- int err = omap_gen(entries_per_omap, key_size, value_size,
- & this_aio_writer->get_omap());
- if (err < 0) {
- return err;
- }
- err = OmapBench::write_omap_asynchronously(this_aio_writer,
- (this_aio_writer->get_omap()));
-
-
- if (err < 0) {
- return err;
- }
- }
- while(busythreads_count > 0) {
- thread_is_free.Wait(thread_is_free_lock);
- }
-
- return 0;
-}
-
-/**
- * runs the specified test with the specified parameters and generates
- * a histogram of latencies
- */
-int main(int argc, const char** argv) {
- OmapBench ob;
- int err = ob.setup(argc, argv);
- if (err<0) {
- cout << "error during setup: "<<err;
- cout << std::endl;
- exit(1);
- }
- err = ob.run();
- if (err < 0) {
- cout << "writing objects failed with code " << err;
- cout << std::endl;
- return err;
- }
-
- ob.print_results();
-
- //uncomment to show omaps
- /*err = ob.return print_written_omap();
- if (err < 0) {
- cout << "printing omaps failed with code " << err;
- cout << std::endl;
- return err;
- }
- */
- return 0;
-
-}
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