--- /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;
+
+}
Code Review / stor4nfv.git / blobdiff