ceph/src/test/objectstore_bench.cc

   1 // -*- mode:C++; tab-width:8; c-basic-offset:2; indent-tabs-mode:t -*-
   2 // vim: ts=8 sw=2 smarttab
   3
   4 #include <chrono>
   5 #include <cassert>
   6 #include <condition_variable>
   7 #include <memory>
   8 #include <mutex>
   9 #include <thread>
  10
  11 #include "os/ObjectStore.h"
  12
  13 #include "global/global_init.h"
  14
  15 #include "common/strtol.h"
  16 #include "common/ceph_argparse.h"
  17
  18 #define dout_context g_ceph_context
  19 #define dout_subsys ceph_subsys_filestore
  20
  21 static void usage()
  22 {
  23   derr << "usage: ceph_objectstore_bench [flags]\n"
  24       "  --size\n"
  25       "        total size in bytes\n"
  26       "  --block-size\n"
  27       "        block size in bytes for each write\n"
  28       "  --repeats\n"
  29       "        number of times to repeat the write cycle\n"
  30       "  --threads\n"
  31       "        number of threads to carry out this workload\n"
  32       "  --multi-object\n"
  33       "        have each thread write to a separate object\n" << dendl;
  34   generic_server_usage();
  35 }
  36
  37 // helper class for bytes with units
  38 struct byte_units {
  39   size_t v;
  40   // cppcheck-suppress noExplicitConstructor
  41   byte_units(size_t v) : v(v) {}
  42
  43   bool parse(const std::string &val, std::string *err);
  44
  45   operator size_t() const { return v; }
  46 };
  47
  48 bool byte_units::parse(const std::string &val, std::string *err)
  49 {
  50   v = strict_sistrtoll(val.c_str(), err);
  51   return err->empty();
  52 }
  53
  54 std::ostream& operator<<(std::ostream &out, const byte_units &amount)
  55 {
  56   static const char* units[] = { "B", "KB", "MB", "GB", "TB", "PB", "EB" };
  57   static const int max_units = sizeof(units)/sizeof(*units);
  58
  59   int unit = 0;
  60   auto v = amount.v;
  61   while (v >= 1024 && unit < max_units) {
  62     // preserve significant bytes
  63     if (v < 1048576 && (v % 1024 != 0))
  64       break;
  65     v >>= 10;
  66     unit++;
  67   }
  68   return out << v << ' ' << units[unit];
  69 }
  70
  71 struct Config {
  72   byte_units size;
  73   byte_units block_size;
  74   int repeats;
  75   int threads;
  76   bool multi_object;
  77   Config()
  78     : size(1048576), block_size(4096),
  79       repeats(1), threads(1),
  80       multi_object(false) {}
  81 };
  82
  83 class C_NotifyCond : public Context {
  84   std::mutex *mutex;
  85   std::condition_variable *cond;
  86   bool *done;
  87 public:
  88   C_NotifyCond(std::mutex *mutex, std::condition_variable *cond, bool *done)
  89     : mutex(mutex), cond(cond), done(done) {}
  90   void finish(int r) override {
  91     std::lock_guard<std::mutex> lock(*mutex);
  92     *done = true;
  93     cond->notify_one();
  94   }
  95 };
  96
  97 void osbench_worker(ObjectStore *os, const Config &cfg,
  98                     const coll_t cid, const ghobject_t oid,
  99                     uint64_t starting_offset)
 100 {
 101   bufferlist data;
 102   data.append(buffer::create(cfg.block_size));
 103
 104   dout(0) << "Writing " << cfg.size
 105       << " in blocks of " << cfg.block_size << dendl;
 106
 107   assert(starting_offset < cfg.size);
 108   assert(starting_offset % cfg.block_size == 0);
 109
 110   ObjectStore::Sequencer sequencer("osbench");
 111
 112   for (int i = 0; i < cfg.repeats; ++i) {
 113     uint64_t offset = starting_offset;
 114     size_t len = cfg.size;
 115
 116     vector<ObjectStore::Transaction> tls;
 117
 118     std::cout << "Write cycle " << i << std::endl;
 119     while (len) {
 120       size_t count = len < cfg.block_size ? len : (size_t)cfg.block_size;
 121
 122       auto t = new ObjectStore::Transaction;
 123       t->write(cid, oid, offset, count, data);
 124       tls.push_back(std::move(*t));
 125       delete t;
 126
 127       offset += count;
 128       if (offset > cfg.size)
 129         offset -= cfg.size;
 130       len -= count;
 131     }
 132
 133     // set up the finisher
 134     std::mutex mutex;
 135     std::condition_variable cond;
 136     bool done = false;
 137
 138     os->queue_transactions(&sequencer, tls, nullptr,
 139                            new C_NotifyCond(&mutex, &cond, &done));
 140
 141     std::unique_lock<std::mutex> lock(mutex);
 142     cond.wait(lock, [&done](){ return done; });
 143     lock.unlock();
 144
 145
 146   }
 147   sequencer.flush();
 148 }
 149
 150 int main(int argc, const char *argv[])
 151 {
 152   Config cfg;
 153
 154   // command-line arguments
 155   vector<const char*> args;
 156   argv_to_vec(argc, argv, args);
 157   env_to_vec(args);
 158
 159   auto cct = global_init(nullptr, args, CEPH_ENTITY_TYPE_OSD,
 160                          CODE_ENVIRONMENT_UTILITY, 0);
 161
 162   std::string val;
 163   vector<const char*>::iterator i = args.begin();
 164   while (i != args.end()) {
 165     if (ceph_argparse_double_dash(args, i))
 166       break;
 167
 168     if (ceph_argparse_witharg(args, i, &val, "--size", (char*)nullptr)) {
 169       std::string err;
 170       if (!cfg.size.parse(val, &err)) {
 171         derr << "error parsing size: " << err << dendl;
 172         usage();
 173       }
 174     } else if (ceph_argparse_witharg(args, i, &val, "--block-size", (char*)nullptr)) {
 175       std::string err;
 176       if (!cfg.block_size.parse(val, &err)) {
 177         derr << "error parsing block-size: " << err << dendl;
 178         usage();
 179       }
 180     } else if (ceph_argparse_witharg(args, i, &val, "--repeats", (char*)nullptr)) {
 181       cfg.repeats = atoi(val.c_str());
 182     } else if (ceph_argparse_witharg(args, i, &val, "--threads", (char*)nullptr)) {
 183       cfg.threads = atoi(val.c_str());
 184     } else if (ceph_argparse_flag(args, i, "--multi-object", (char*)nullptr)) {
 185       cfg.multi_object = true;
 186     } else {
 187       derr << "Error: can't understand argument: " << *i << "\n" << dendl;
 188       usage();
 189     }
 190   }
 191
 192   common_init_finish(g_ceph_context);
 193
 194   // create object store
 195   dout(0) << "objectstore " << g_conf->osd_objectstore << dendl;
 196   dout(0) << "data " << g_conf->osd_data << dendl;
 197   dout(0) << "journal " << g_conf->osd_journal << dendl;
 198   dout(0) << "size " << cfg.size << dendl;
 199   dout(0) << "block-size " << cfg.block_size << dendl;
 200   dout(0) << "repeats " << cfg.repeats << dendl;
 201   dout(0) << "threads " << cfg.threads << dendl;
 202
 203   auto os = std::unique_ptr<ObjectStore>(
 204       ObjectStore::create(g_ceph_context,
 205                           g_conf->osd_objectstore,
 206                           g_conf->osd_data,
 207                           g_conf->osd_journal));
 208
 209   //Checking data folder: create if needed or error if it's not empty
 210   DIR *dir = ::opendir(g_conf->osd_data.c_str());
 211   if (!dir) {
 212     std::string cmd("mkdir -p ");
 213     cmd+=g_conf->osd_data;
 214     int r = ::system( cmd.c_str() );
 215     if( r<0 ){
 216       derr << "Failed to create data directory, ret = " << r << dendl;
 217       return 1;
 218     }
 219   }
 220   else {
 221      bool non_empty = readdir(dir) != NULL && readdir(dir) != NULL && readdir(dir) != NULL;
 222      if( non_empty ){
 223        derr << "Data directory '"<<g_conf->osd_data<<"' isn't empty, please clean it first."<< dendl;
 224        return 1;
 225      }
 226   }
 227   ::closedir(dir);
 228
 229   //Create folders for journal if needed
 230   string journal_base = g_conf->osd_journal.substr(0, g_conf->osd_journal.rfind('/'));
 231   struct stat sb;
 232   if (stat(journal_base.c_str(), &sb) != 0 ){
 233     std::string cmd("mkdir -p ");
 234     cmd+=journal_base;
 235     int r = ::system( cmd.c_str() );
 236     if( r<0 ){
 237       derr << "Failed to create journal directory, ret = " << r << dendl;
 238       return 1;
 239     }
 240   }
 241
 242   if (!os) {
 243     derr << "bad objectstore type " << g_conf->osd_objectstore << dendl;
 244     return 1;
 245   }
 246   if (os->mkfs() < 0) {
 247     derr << "mkfs failed" << dendl;
 248     return 1;
 249   }
 250   if (os->mount() < 0) {
 251     derr << "mount failed" << dendl;
 252     return 1;
 253   }
 254
 255   dout(10) << "created objectstore " << os.get() << dendl;
 256
 257   // create a collection
 258   spg_t pg;
 259   const coll_t cid(pg);
 260   {
 261     ObjectStore::Sequencer osr(__func__);
 262     ObjectStore::Transaction t;
 263     t.create_collection(cid, 0);
 264     os->apply_transaction(&osr, std::move(t));
 265   }
 266
 267   // create the objects
 268   std::vector<ghobject_t> oids;
 269   if (cfg.multi_object) {
 270     oids.reserve(cfg.threads);
 271     for (int i = 0; i < cfg.threads; i++) {
 272       std::stringstream oss;
 273       oss << "osbench-thread-" << i;
 274       oids.emplace_back(hobject_t(sobject_t(oss.str(), CEPH_NOSNAP)));
 275
 276       ObjectStore::Sequencer osr(__func__);
 277       ObjectStore::Transaction t;
 278       t.touch(cid, oids[i]);
 279       int r = os->apply_transaction(&osr, std::move(t));
 280       assert(r == 0);
 281     }
 282   } else {
 283     oids.emplace_back(hobject_t(sobject_t("osbench", CEPH_NOSNAP)));
 284
 285     ObjectStore::Sequencer osr(__func__);
 286     ObjectStore::Transaction t;
 287     t.touch(cid, oids.back());
 288     int r = os->apply_transaction(&osr, std::move(t));
 289     assert(r == 0);
 290   }
 291
 292   // run the worker threads
 293   std::vector<std::thread> workers;
 294   workers.reserve(cfg.threads);
 295
 296   using namespace std::chrono;
 297   auto t1 = high_resolution_clock::now();
 298   for (int i = 0; i < cfg.threads; i++) {
 299     const auto &oid = cfg.multi_object ? oids[i] : oids[0];
 300     workers.emplace_back(osbench_worker, os.get(), std::ref(cfg),
 301                          cid, oid, i * cfg.size / cfg.threads);
 302   }
 303   for (auto &worker : workers)
 304     worker.join();
 305   auto t2 = high_resolution_clock::now();
 306   workers.clear();
 307
 308   auto duration = duration_cast<microseconds>(t2 - t1);
 309   byte_units total = cfg.size * cfg.repeats * cfg.threads;
 310   byte_units rate = (1000000LL * total) / duration.count();
 311   size_t iops = (1000000LL * total / cfg.block_size) / duration.count();
 312   dout(0) << "Wrote " << total << " in "
 313       << duration.count() << "us, at a rate of " << rate << "/s and "
 314       << iops << " iops" << dendl;
 315
 316   // remove the objects
 317   ObjectStore::Sequencer osr(__func__);
 318   ObjectStore::Transaction t;
 319   for (const auto &oid : oids)
 320     t.remove(cid, oid);
 321   os->apply_transaction(&osr,std::move(t));
 322
 323   os->umount();
 324   return 0;
 325 }