Summary: This adds more statistics to be reported by GetProperty("leveldb.stats"). The new stats include time spent waiting on stalls in MakeRoomForWrite. This also includes the total amplification rate where that is: (#bytes of sequential IO during compaction) / (#bytes from Put) This also includes a lot more data for the per-level compaction report. * Rn(MB) - MB read from level N during compaction between levels N and N+1 * Rnp1(MB) - MB read from level N+1 during compaction between levels N and N+1 * Wnew(MB) - new data written to the level during compaction * Amplify - ( Write(MB) + Rnp1(MB) ) / Rn(MB) * Rn - files read from level N during compaction between levels N and N+1 * Rnp1 - files read from level N+1 during compaction between levels N and N+1 * Wnp1 - files written to level N+1 during compaction between levels N and N+1 * NewW - new files written to level N+1 during compaction * Count - number of compactions done for this level This is the new output from DB::GetProperty("leveldb.stats"). The old output stopped at Write(MB) Compactions Level Files Size(MB) Time(sec) Read(MB) Write(MB) Rn(MB) Rnp1(MB) Wnew(MB) Amplify Read(MB/s) Write(MB/s) Rn Rnp1 Wnp1 NewW Count ------------------------------------------------------------------------------------------------------------------------------------- 0 3 6 33 0 576 0 0 576 -1.0 0.0 1.3 0 0 0 0 290 1 127 242 351 5316 5314 570 4747 567 17.0 12.1 12.1 287 2399 2685 286 32 2 161 328 54 822 824 326 496 328 4.0 1.9 1.9 160 251 411 160 161 Amplification: 22.3 rate, 0.56 GB in, 12.55 GB out Uptime(secs): 439.8 Stalls(secs): 206.938 level0_slowdown, 0.000 level0_numfiles, 24.129 memtable_compaction Task ID: # Blame Rev: Test Plan: run db_bench Revert Plan: Database Impact: Memcache Impact: Other Notes: EImportant: - begin *PUBLIC* platform impact section - Bugzilla: # - end platform impact - (cherry picked from commit ecdeead38f86cc02e754d0032600742c4f02fec8) Reviewers: dhruba Differential Revision: https://reviews.facebook.net/D6153
1336 lines
42 KiB
C++
1336 lines
42 KiB
C++
// Copyright (c) 2011 The LevelDB Authors. All rights reserved.
|
|
// Use of this source code is governed by a BSD-style license that can be
|
|
// found in the LICENSE file. See the AUTHORS file for names of contributors.
|
|
|
|
#include <sys/types.h>
|
|
#include <stdio.h>
|
|
#include <stdlib.h>
|
|
#include "db/db_impl.h"
|
|
#include "db/version_set.h"
|
|
#include "db/db_statistics.h"
|
|
#include "leveldb/cache.h"
|
|
#include "leveldb/db.h"
|
|
#include "leveldb/env.h"
|
|
#include "leveldb/write_batch.h"
|
|
#include "leveldb/statistics.h"
|
|
#include "port/port.h"
|
|
#include "util/crc32c.h"
|
|
#include "util/histogram.h"
|
|
#include "util/mutexlock.h"
|
|
#include "util/random.h"
|
|
#include "util/testutil.h"
|
|
#include "hdfs/env_hdfs.h"
|
|
|
|
// Comma-separated list of operations to run in the specified order
|
|
// Actual benchmarks:
|
|
// fillseq -- write N values in sequential key order in async mode
|
|
// fillrandom -- write N values in random key order in async mode
|
|
// overwrite -- overwrite N values in random key order in async mode
|
|
// fillsync -- write N/100 values in random key order in sync mode
|
|
// fill100K -- write N/1000 100K values in random order in async mode
|
|
// deleteseq -- delete N keys in sequential order
|
|
// deleterandom -- delete N keys in random order
|
|
// readseq -- read N times sequentially
|
|
// readreverse -- read N times in reverse order
|
|
// readrandom -- read N times in random order
|
|
// readmissing -- read N missing keys in random order
|
|
// readhot -- read N times in random order from 1% section of DB
|
|
// seekrandom -- N random seeks
|
|
// crc32c -- repeated crc32c of 4K of data
|
|
// acquireload -- load N*1000 times
|
|
// Meta operations:
|
|
// compact -- Compact the entire DB
|
|
// stats -- Print DB stats
|
|
// sstables -- Print sstable info
|
|
// heapprofile -- Dump a heap profile (if supported by this port)
|
|
static const char* FLAGS_benchmarks =
|
|
"fillseq,"
|
|
"fillsync,"
|
|
"fillrandom,"
|
|
"overwrite,"
|
|
"readrandom,"
|
|
"readrandom," // Extra run to allow previous compactions to quiesce
|
|
"readseq,"
|
|
"readreverse,"
|
|
"compact,"
|
|
"readrandom,"
|
|
"readseq,"
|
|
"readreverse,"
|
|
"readrandomwriterandom," // mix reads and writes based on FLAGS_readwritepercent
|
|
"fill100K,"
|
|
"crc32c,"
|
|
"snappycomp,"
|
|
"snappyuncomp,"
|
|
"acquireload,"
|
|
;
|
|
|
|
// Number of key/values to place in database
|
|
static long FLAGS_num = 1000000;
|
|
|
|
// Number of read operations to do. If negative, do FLAGS_num reads.
|
|
static long FLAGS_reads = -1;
|
|
|
|
// Number of concurrent threads to run.
|
|
static int FLAGS_threads = 1;
|
|
|
|
// Size of each value
|
|
static int FLAGS_value_size = 100;
|
|
|
|
// Arrange to generate values that shrink to this fraction of
|
|
// their original size after compression
|
|
static double FLAGS_compression_ratio = 0.5;
|
|
|
|
// Print histogram of operation timings
|
|
static bool FLAGS_histogram = false;
|
|
|
|
// Number of bytes to buffer in memtable before compacting
|
|
// (initialized to default value by "main")
|
|
static int FLAGS_write_buffer_size = 0;
|
|
|
|
// Number of bytes to use as a cache of uncompressed data.
|
|
// Negative means use default settings.
|
|
static long FLAGS_cache_size = -1;
|
|
|
|
// Number of bytes in a block.
|
|
static int FLAGS_block_size = 0;
|
|
|
|
// Maximum number of files to keep open at the same time (use default if == 0)
|
|
static int FLAGS_open_files = 0;
|
|
|
|
// Bloom filter bits per key.
|
|
// Negative means use default settings.
|
|
static int FLAGS_bloom_bits = -1;
|
|
|
|
// If true, do not destroy the existing database. If you set this
|
|
// flag and also specify a benchmark that wants a fresh database, that
|
|
// benchmark will fail.
|
|
static bool FLAGS_use_existing_db = false;
|
|
|
|
// Use the db with the following name.
|
|
static const char* FLAGS_db = NULL;
|
|
|
|
// Number of shards for the block cache is 2 ** FLAGS_cache_numshardbits.
|
|
// Negative means use default settings. This is applied only
|
|
// if FLAGS_cache_size is non-negative.
|
|
static int FLAGS_cache_numshardbits = -1;
|
|
|
|
// Verify checksum for every block read from storage
|
|
static bool FLAGS_verify_checksum = false;
|
|
|
|
// Database statistics
|
|
static bool FLAGS_statistics = false;
|
|
static class leveldb::DBStatistics* dbstats = NULL;
|
|
|
|
// Number of write operations to do. If negative, do FLAGS_num reads.
|
|
static long FLAGS_writes = -1;
|
|
|
|
// These default values might change if the hardcoded
|
|
|
|
// Sync all writes to disk
|
|
static bool FLAGS_sync = false;
|
|
|
|
// If true, do not wait until data is synced to disk.
|
|
static bool FLAGS_disable_data_sync = false;
|
|
|
|
// If true, issue fsync instead of fdatasync
|
|
static bool FLAGS_use_fsync = false;
|
|
|
|
// If true, do not write WAL for write.
|
|
static bool FLAGS_disable_wal = false;
|
|
|
|
// The total number of levels
|
|
static int FLAGS_num_levels = 7;
|
|
|
|
// Target level-0 file size for compaction
|
|
static int FLAGS_target_file_size_base = 2 * 1048576;
|
|
|
|
// A multiplier to compute targe level-N file size
|
|
static int FLAGS_target_file_size_multiplier = 1;
|
|
|
|
// Max bytes for level-1
|
|
static int FLAGS_max_bytes_for_level_base = 10 * 1048576;
|
|
|
|
// A multiplier to compute max bytes for level-N
|
|
static int FLAGS_max_bytes_for_level_multiplier = 10;
|
|
|
|
// Number of files in level-0 that will trigger put stop.
|
|
static int FLAGS_level0_stop_writes_trigger = 12;
|
|
|
|
// Number of files in level-0 that will slow down writes.
|
|
static int FLAGS_level0_slowdown_writes_trigger = 8;
|
|
|
|
// Number of files in level-0 when compactions start
|
|
static int FLAGS_level0_file_num_compaction_trigger = 4;
|
|
|
|
// Ratio of reads to writes (expressed as a percentage)
|
|
// for the ReadRandomWriteRandom workload. The default
|
|
// setting is 9 gets for every 1 put.
|
|
static int FLAGS_readwritepercent = 90;
|
|
|
|
// Option to disable compation triggered by read.
|
|
static int FLAGS_disable_seek_compaction = false;
|
|
|
|
// Option to delete obsolete files periodically
|
|
// Default: 0 which means that obsolete files are
|
|
// deleted after every compaction run.
|
|
static uint64_t FLAGS_delete_obsolete_files_period_micros = 0;
|
|
|
|
// Algorithm to use to compress the database
|
|
static enum leveldb::CompressionType FLAGS_compression_type =
|
|
leveldb::kSnappyCompression;
|
|
|
|
// posix or hdfs environment
|
|
static leveldb::Env* FLAGS_env = leveldb::Env::Default();
|
|
|
|
// Stats are reported every N operations when this is greater
|
|
// than zero. When 0 the interval grows over time.
|
|
static int FLAGS_stats_interval = 0;
|
|
|
|
extern bool useOsBuffer;
|
|
extern bool useFsReadAhead;
|
|
extern bool useMmapRead;
|
|
extern bool useMmapWrite;
|
|
|
|
namespace leveldb {
|
|
|
|
namespace {
|
|
|
|
// Helper for quickly generating random data.
|
|
class RandomGenerator {
|
|
private:
|
|
std::string data_;
|
|
int pos_;
|
|
|
|
public:
|
|
RandomGenerator() {
|
|
// We use a limited amount of data over and over again and ensure
|
|
// that it is larger than the compression window (32KB), and also
|
|
// large enough to serve all typical value sizes we want to write.
|
|
Random rnd(301);
|
|
std::string piece;
|
|
while (data_.size() < 1048576) {
|
|
// Add a short fragment that is as compressible as specified
|
|
// by FLAGS_compression_ratio.
|
|
test::CompressibleString(&rnd, FLAGS_compression_ratio, 100, &piece);
|
|
data_.append(piece);
|
|
}
|
|
pos_ = 0;
|
|
}
|
|
|
|
Slice Generate(int len) {
|
|
if (pos_ + len > data_.size()) {
|
|
pos_ = 0;
|
|
assert(len < data_.size());
|
|
}
|
|
pos_ += len;
|
|
return Slice(data_.data() + pos_ - len, len);
|
|
}
|
|
};
|
|
static Slice TrimSpace(Slice s) {
|
|
int start = 0;
|
|
while (start < s.size() && isspace(s[start])) {
|
|
start++;
|
|
}
|
|
int limit = s.size();
|
|
while (limit > start && isspace(s[limit-1])) {
|
|
limit--;
|
|
}
|
|
return Slice(s.data() + start, limit - start);
|
|
}
|
|
|
|
static void AppendWithSpace(std::string* str, Slice msg) {
|
|
if (msg.empty()) return;
|
|
if (!str->empty()) {
|
|
str->push_back(' ');
|
|
}
|
|
str->append(msg.data(), msg.size());
|
|
}
|
|
|
|
class Stats {
|
|
private:
|
|
int id_;
|
|
double start_;
|
|
double finish_;
|
|
double seconds_;
|
|
long done_;
|
|
long last_report_done_;
|
|
int next_report_;
|
|
int64_t bytes_;
|
|
double last_op_finish_;
|
|
double last_report_finish_;
|
|
Histogram hist_;
|
|
std::string message_;
|
|
|
|
public:
|
|
Stats() { Start(-1); }
|
|
|
|
void Start(int id) {
|
|
id_ = id;
|
|
next_report_ = FLAGS_stats_interval ? FLAGS_stats_interval : 100;
|
|
last_op_finish_ = start_;
|
|
hist_.Clear();
|
|
done_ = 0;
|
|
last_report_done_ = 0;
|
|
bytes_ = 0;
|
|
seconds_ = 0;
|
|
start_ = FLAGS_env->NowMicros();
|
|
finish_ = start_;
|
|
last_report_finish_ = start_;
|
|
message_.clear();
|
|
}
|
|
|
|
void Merge(const Stats& other) {
|
|
hist_.Merge(other.hist_);
|
|
done_ += other.done_;
|
|
bytes_ += other.bytes_;
|
|
seconds_ += other.seconds_;
|
|
if (other.start_ < start_) start_ = other.start_;
|
|
if (other.finish_ > finish_) finish_ = other.finish_;
|
|
|
|
// Just keep the messages from one thread
|
|
if (message_.empty()) message_ = other.message_;
|
|
}
|
|
|
|
void Stop() {
|
|
finish_ = FLAGS_env->NowMicros();
|
|
seconds_ = (finish_ - start_) * 1e-6;
|
|
}
|
|
|
|
void AddMessage(Slice msg) {
|
|
AppendWithSpace(&message_, msg);
|
|
}
|
|
|
|
void SetId(int id) { id_ = id; }
|
|
|
|
void FinishedSingleOp(DB* db) {
|
|
if (FLAGS_histogram) {
|
|
double now = FLAGS_env->NowMicros();
|
|
double micros = now - last_op_finish_;
|
|
hist_.Add(micros);
|
|
if (micros > 20000 && !FLAGS_stats_interval) {
|
|
fprintf(stderr, "long op: %.1f micros%30s\r", micros, "");
|
|
fflush(stderr);
|
|
}
|
|
last_op_finish_ = now;
|
|
}
|
|
|
|
done_++;
|
|
if (done_ >= next_report_) {
|
|
if (!FLAGS_stats_interval) {
|
|
if (next_report_ < 1000) next_report_ += 100;
|
|
else if (next_report_ < 5000) next_report_ += 500;
|
|
else if (next_report_ < 10000) next_report_ += 1000;
|
|
else if (next_report_ < 50000) next_report_ += 5000;
|
|
else if (next_report_ < 100000) next_report_ += 10000;
|
|
else if (next_report_ < 500000) next_report_ += 50000;
|
|
else next_report_ += 100000;
|
|
fprintf(stderr, "... finished %ld ops%30s\r", done_, "");
|
|
fflush(stderr);
|
|
} else {
|
|
double now = FLAGS_env->NowMicros();
|
|
fprintf(stderr,
|
|
"... thread %d: (%ld,%ld) ops (interval,total) in %.6f seconds and %.2f ops/sec\n",
|
|
id_,
|
|
done_ - last_report_done_, done_,
|
|
(now - last_report_finish_) / 1000000.0,
|
|
(done_ - last_report_done_) /
|
|
((now - last_report_finish_) / 1000000.0));
|
|
|
|
std::string stats;
|
|
if (db && db->GetProperty("leveldb.stats", &stats))
|
|
fprintf(stderr, stats.c_str());
|
|
|
|
fflush(stderr);
|
|
next_report_ += FLAGS_stats_interval;
|
|
last_report_finish_ = now;
|
|
last_report_done_ = done_;
|
|
}
|
|
}
|
|
}
|
|
|
|
void AddBytes(int64_t n) {
|
|
bytes_ += n;
|
|
}
|
|
|
|
void Report(const Slice& name) {
|
|
// Pretend at least one op was done in case we are running a benchmark
|
|
// that does not call FinishedSingleOp().
|
|
if (done_ < 1) done_ = 1;
|
|
|
|
std::string extra;
|
|
if (bytes_ > 0) {
|
|
// Rate is computed on actual elapsed time, not the sum of per-thread
|
|
// elapsed times.
|
|
double elapsed = (finish_ - start_) * 1e-6;
|
|
char rate[100];
|
|
snprintf(rate, sizeof(rate), "%6.1f MB/s",
|
|
(bytes_ / 1048576.0) / elapsed);
|
|
extra = rate;
|
|
}
|
|
AppendWithSpace(&extra, message_);
|
|
double elapsed = (finish_ - start_) * 1e-6;
|
|
double throughput = (double)done_/elapsed;
|
|
|
|
fprintf(stdout, "%-12s : %11.3f micros/op %ld ops/sec;%s%s\n",
|
|
name.ToString().c_str(),
|
|
seconds_ * 1e6 / done_,
|
|
(long)throughput,
|
|
(extra.empty() ? "" : " "),
|
|
extra.c_str());
|
|
if (FLAGS_histogram) {
|
|
fprintf(stdout, "Microseconds per op:\n%s\n", hist_.ToString().c_str());
|
|
}
|
|
fflush(stdout);
|
|
}
|
|
};
|
|
|
|
// State shared by all concurrent executions of the same benchmark.
|
|
struct SharedState {
|
|
port::Mutex mu;
|
|
port::CondVar cv;
|
|
int total;
|
|
|
|
// Each thread goes through the following states:
|
|
// (1) initializing
|
|
// (2) waiting for others to be initialized
|
|
// (3) running
|
|
// (4) done
|
|
|
|
long num_initialized;
|
|
long num_done;
|
|
bool start;
|
|
|
|
SharedState() : cv(&mu) { }
|
|
};
|
|
|
|
// Per-thread state for concurrent executions of the same benchmark.
|
|
struct ThreadState {
|
|
int tid; // 0..n-1 when running in n threads
|
|
Random rand; // Has different seeds for different threads
|
|
Stats stats;
|
|
SharedState* shared;
|
|
|
|
ThreadState(int index)
|
|
: tid(index),
|
|
rand(1000 + index) {
|
|
}
|
|
};
|
|
|
|
} // namespace
|
|
|
|
class Benchmark {
|
|
private:
|
|
Cache* cache_;
|
|
const FilterPolicy* filter_policy_;
|
|
DB* db_;
|
|
long num_;
|
|
int value_size_;
|
|
int entries_per_batch_;
|
|
WriteOptions write_options_;
|
|
long reads_;
|
|
long writes_;
|
|
long readwrites_;
|
|
int heap_counter_;
|
|
|
|
void PrintHeader() {
|
|
const int kKeySize = 16;
|
|
PrintEnvironment();
|
|
fprintf(stdout, "Keys: %d bytes each\n", kKeySize);
|
|
fprintf(stdout, "Values: %d bytes each (%d bytes after compression)\n",
|
|
FLAGS_value_size,
|
|
static_cast<int>(FLAGS_value_size * FLAGS_compression_ratio + 0.5));
|
|
fprintf(stdout, "Entries: %ld\n", num_);
|
|
fprintf(stdout, "RawSize: %.1f MB (estimated)\n",
|
|
((static_cast<int64_t>(kKeySize + FLAGS_value_size) * num_)
|
|
/ 1048576.0));
|
|
fprintf(stdout, "FileSize: %.1f MB (estimated)\n",
|
|
(((kKeySize + FLAGS_value_size * FLAGS_compression_ratio) * num_)
|
|
/ 1048576.0));
|
|
|
|
switch (FLAGS_compression_type) {
|
|
case leveldb::kNoCompression:
|
|
fprintf(stdout, "Compression: none\n");
|
|
break;
|
|
case leveldb::kSnappyCompression:
|
|
fprintf(stdout, "Compression: snappy\n");
|
|
break;
|
|
case leveldb::kZlibCompression:
|
|
fprintf(stdout, "Compression: zlib\n");
|
|
break;
|
|
case leveldb::kBZip2Compression:
|
|
fprintf(stdout, "Compression: bzip2\n");
|
|
break;
|
|
}
|
|
|
|
PrintWarnings();
|
|
fprintf(stdout, "------------------------------------------------\n");
|
|
}
|
|
|
|
void PrintWarnings() {
|
|
#if defined(__GNUC__) && !defined(__OPTIMIZE__)
|
|
fprintf(stdout,
|
|
"WARNING: Optimization is disabled: benchmarks unnecessarily slow\n"
|
|
);
|
|
#endif
|
|
#ifndef NDEBUG
|
|
fprintf(stdout,
|
|
"WARNING: Assertions are enabled; benchmarks unnecessarily slow\n");
|
|
#endif
|
|
|
|
if (FLAGS_compression_type != leveldb::kNoCompression) {
|
|
// The test string should not be too small.
|
|
const int len = FLAGS_block_size;
|
|
char* text = (char*) malloc(len+1);
|
|
bool result = true;
|
|
const char* name = NULL;
|
|
std::string compressed;
|
|
|
|
memset(text, (int) 'y', len);
|
|
text[len] = '\0';
|
|
|
|
switch (FLAGS_compression_type) {
|
|
case kSnappyCompression:
|
|
result = port::Snappy_Compress(text, strlen(text), &compressed);
|
|
name = "Snappy";
|
|
break;
|
|
case kZlibCompression:
|
|
result = port::Zlib_Compress(text, strlen(text), &compressed);
|
|
name = "Zlib";
|
|
break;
|
|
case kBZip2Compression:
|
|
result = port::BZip2_Compress(text, strlen(text), &compressed);
|
|
name = "BZip2";
|
|
break;
|
|
}
|
|
|
|
if (!result) {
|
|
fprintf(stdout, "WARNING: %s compression is not enabled\n", name);
|
|
} else if (name && compressed.size() >= strlen(text)) {
|
|
fprintf(stdout, "WARNING: %s compression is not effective\n", name);
|
|
}
|
|
|
|
free(text);
|
|
}
|
|
}
|
|
|
|
void PrintEnvironment() {
|
|
fprintf(stderr, "LevelDB: version %d.%d\n",
|
|
kMajorVersion, kMinorVersion);
|
|
|
|
#if defined(__linux)
|
|
time_t now = time(NULL);
|
|
fprintf(stderr, "Date: %s", ctime(&now)); // ctime() adds newline
|
|
|
|
FILE* cpuinfo = fopen("/proc/cpuinfo", "r");
|
|
if (cpuinfo != NULL) {
|
|
char line[1000];
|
|
int num_cpus = 0;
|
|
std::string cpu_type;
|
|
std::string cache_size;
|
|
while (fgets(line, sizeof(line), cpuinfo) != NULL) {
|
|
const char* sep = strchr(line, ':');
|
|
if (sep == NULL) {
|
|
continue;
|
|
}
|
|
Slice key = TrimSpace(Slice(line, sep - 1 - line));
|
|
Slice val = TrimSpace(Slice(sep + 1));
|
|
if (key == "model name") {
|
|
++num_cpus;
|
|
cpu_type = val.ToString();
|
|
} else if (key == "cache size") {
|
|
cache_size = val.ToString();
|
|
}
|
|
}
|
|
fclose(cpuinfo);
|
|
fprintf(stderr, "CPU: %d * %s\n", num_cpus, cpu_type.c_str());
|
|
fprintf(stderr, "CPUCache: %s\n", cache_size.c_str());
|
|
}
|
|
#endif
|
|
}
|
|
|
|
void PrintStatistics() {
|
|
if (FLAGS_statistics) {
|
|
fprintf(stdout, "File opened:%ld closed:%ld errors:%ld\n",
|
|
dbstats->getNumFileOpens(),
|
|
dbstats->getNumFileCloses(),
|
|
dbstats->getNumFileErrors());
|
|
}
|
|
}
|
|
|
|
public:
|
|
Benchmark()
|
|
: cache_(FLAGS_cache_size >= 0 ?
|
|
(FLAGS_cache_numshardbits >= 1 ?
|
|
NewLRUCache(FLAGS_cache_size, FLAGS_cache_numshardbits) :
|
|
NewLRUCache(FLAGS_cache_size)) : NULL),
|
|
filter_policy_(FLAGS_bloom_bits >= 0
|
|
? NewBloomFilterPolicy(FLAGS_bloom_bits)
|
|
: NULL),
|
|
db_(NULL),
|
|
num_(FLAGS_num),
|
|
value_size_(FLAGS_value_size),
|
|
entries_per_batch_(1),
|
|
reads_(FLAGS_reads < 0 ? FLAGS_num : FLAGS_reads),
|
|
writes_(FLAGS_writes < 0 ? FLAGS_num : FLAGS_writes),
|
|
readwrites_((FLAGS_writes < 0 && FLAGS_reads < 0)? FLAGS_num :
|
|
((FLAGS_writes > FLAGS_reads) ? FLAGS_writes : FLAGS_reads)
|
|
),
|
|
heap_counter_(0) {
|
|
std::vector<std::string> files;
|
|
FLAGS_env->GetChildren(FLAGS_db, &files);
|
|
for (int i = 0; i < files.size(); i++) {
|
|
if (Slice(files[i]).starts_with("heap-")) {
|
|
FLAGS_env->DeleteFile(std::string(FLAGS_db) + "/" + files[i]);
|
|
}
|
|
}
|
|
if (!FLAGS_use_existing_db) {
|
|
DestroyDB(FLAGS_db, Options());
|
|
}
|
|
}
|
|
|
|
~Benchmark() {
|
|
delete db_;
|
|
delete cache_;
|
|
delete filter_policy_;
|
|
}
|
|
|
|
void Run() {
|
|
PrintHeader();
|
|
Open();
|
|
|
|
const char* benchmarks = FLAGS_benchmarks;
|
|
while (benchmarks != NULL) {
|
|
const char* sep = strchr(benchmarks, ',');
|
|
Slice name;
|
|
if (sep == NULL) {
|
|
name = benchmarks;
|
|
benchmarks = NULL;
|
|
} else {
|
|
name = Slice(benchmarks, sep - benchmarks);
|
|
benchmarks = sep + 1;
|
|
}
|
|
|
|
// Reset parameters that may be overriddden bwlow
|
|
num_ = FLAGS_num;
|
|
reads_ = (FLAGS_reads < 0 ? FLAGS_num : FLAGS_reads);
|
|
writes_ = (FLAGS_writes < 0 ? FLAGS_num : FLAGS_writes);
|
|
value_size_ = FLAGS_value_size;
|
|
entries_per_batch_ = 1;
|
|
write_options_ = WriteOptions();
|
|
if (FLAGS_sync) {
|
|
write_options_.sync = true;
|
|
}
|
|
|
|
write_options_.disableWAL = FLAGS_disable_wal;
|
|
|
|
void (Benchmark::*method)(ThreadState*) = NULL;
|
|
bool fresh_db = false;
|
|
int num_threads = FLAGS_threads;
|
|
|
|
if (name == Slice("fillseq")) {
|
|
fresh_db = true;
|
|
method = &Benchmark::WriteSeq;
|
|
} else if (name == Slice("fillbatch")) {
|
|
fresh_db = true;
|
|
entries_per_batch_ = 1000;
|
|
method = &Benchmark::WriteSeq;
|
|
} else if (name == Slice("fillrandom")) {
|
|
fresh_db = true;
|
|
method = &Benchmark::WriteRandom;
|
|
} else if (name == Slice("overwrite")) {
|
|
fresh_db = false;
|
|
method = &Benchmark::WriteRandom;
|
|
} else if (name == Slice("fillsync")) {
|
|
fresh_db = true;
|
|
num_ /= 1000;
|
|
write_options_.sync = true;
|
|
method = &Benchmark::WriteRandom;
|
|
} else if (name == Slice("fill100K")) {
|
|
fresh_db = true;
|
|
num_ /= 1000;
|
|
value_size_ = 100 * 1000;
|
|
method = &Benchmark::WriteRandom;
|
|
} else if (name == Slice("readseq")) {
|
|
method = &Benchmark::ReadSequential;
|
|
} else if (name == Slice("readreverse")) {
|
|
method = &Benchmark::ReadReverse;
|
|
} else if (name == Slice("readrandom")) {
|
|
method = &Benchmark::ReadRandom;
|
|
} else if (name == Slice("readmissing")) {
|
|
method = &Benchmark::ReadMissing;
|
|
} else if (name == Slice("seekrandom")) {
|
|
method = &Benchmark::SeekRandom;
|
|
} else if (name == Slice("readhot")) {
|
|
method = &Benchmark::ReadHot;
|
|
} else if (name == Slice("readrandomsmall")) {
|
|
reads_ /= 1000;
|
|
method = &Benchmark::ReadRandom;
|
|
} else if (name == Slice("deleteseq")) {
|
|
method = &Benchmark::DeleteSeq;
|
|
} else if (name == Slice("deleterandom")) {
|
|
method = &Benchmark::DeleteRandom;
|
|
} else if (name == Slice("readwhilewriting")) {
|
|
num_threads++; // Add extra thread for writing
|
|
method = &Benchmark::ReadWhileWriting;
|
|
} else if (name == Slice("readrandomwriterandom")) {
|
|
method = &Benchmark::ReadRandomWriteRandom;
|
|
} else if (name == Slice("compact")) {
|
|
method = &Benchmark::Compact;
|
|
} else if (name == Slice("crc32c")) {
|
|
method = &Benchmark::Crc32c;
|
|
} else if (name == Slice("acquireload")) {
|
|
method = &Benchmark::AcquireLoad;
|
|
} else if (name == Slice("snappycomp")) {
|
|
method = &Benchmark::SnappyCompress;
|
|
} else if (name == Slice("snappyuncomp")) {
|
|
method = &Benchmark::SnappyUncompress;
|
|
} else if (name == Slice("heapprofile")) {
|
|
HeapProfile();
|
|
} else if (name == Slice("stats")) {
|
|
PrintStats("leveldb.stats");
|
|
} else if (name == Slice("sstables")) {
|
|
PrintStats("leveldb.sstables");
|
|
} else {
|
|
if (name != Slice()) { // No error message for empty name
|
|
fprintf(stderr, "unknown benchmark '%s'\n", name.ToString().c_str());
|
|
}
|
|
}
|
|
|
|
if (fresh_db) {
|
|
if (FLAGS_use_existing_db) {
|
|
fprintf(stdout, "%-12s : skipped (--use_existing_db is true)\n",
|
|
name.ToString().c_str());
|
|
method = NULL;
|
|
} else {
|
|
delete db_;
|
|
db_ = NULL;
|
|
DestroyDB(FLAGS_db, Options());
|
|
Open();
|
|
}
|
|
}
|
|
|
|
if (method != NULL) {
|
|
RunBenchmark(num_threads, name, method);
|
|
}
|
|
}
|
|
PrintStatistics();
|
|
}
|
|
|
|
private:
|
|
struct ThreadArg {
|
|
Benchmark* bm;
|
|
SharedState* shared;
|
|
ThreadState* thread;
|
|
void (Benchmark::*method)(ThreadState*);
|
|
};
|
|
|
|
static void ThreadBody(void* v) {
|
|
ThreadArg* arg = reinterpret_cast<ThreadArg*>(v);
|
|
SharedState* shared = arg->shared;
|
|
ThreadState* thread = arg->thread;
|
|
{
|
|
MutexLock l(&shared->mu);
|
|
shared->num_initialized++;
|
|
if (shared->num_initialized >= shared->total) {
|
|
shared->cv.SignalAll();
|
|
}
|
|
while (!shared->start) {
|
|
shared->cv.Wait();
|
|
}
|
|
}
|
|
|
|
thread->stats.Start(thread->tid);
|
|
(arg->bm->*(arg->method))(thread);
|
|
thread->stats.Stop();
|
|
|
|
{
|
|
MutexLock l(&shared->mu);
|
|
shared->num_done++;
|
|
if (shared->num_done >= shared->total) {
|
|
shared->cv.SignalAll();
|
|
}
|
|
}
|
|
}
|
|
|
|
void RunBenchmark(int n, Slice name,
|
|
void (Benchmark::*method)(ThreadState*)) {
|
|
SharedState shared;
|
|
shared.total = n;
|
|
shared.num_initialized = 0;
|
|
shared.num_done = 0;
|
|
shared.start = false;
|
|
|
|
ThreadArg* arg = new ThreadArg[n];
|
|
for (int i = 0; i < n; i++) {
|
|
arg[i].bm = this;
|
|
arg[i].method = method;
|
|
arg[i].shared = &shared;
|
|
arg[i].thread = new ThreadState(i);
|
|
arg[i].thread->shared = &shared;
|
|
FLAGS_env->StartThread(ThreadBody, &arg[i]);
|
|
}
|
|
|
|
shared.mu.Lock();
|
|
while (shared.num_initialized < n) {
|
|
shared.cv.Wait();
|
|
}
|
|
|
|
shared.start = true;
|
|
shared.cv.SignalAll();
|
|
while (shared.num_done < n) {
|
|
shared.cv.Wait();
|
|
}
|
|
shared.mu.Unlock();
|
|
|
|
for (int i = 1; i < n; i++) {
|
|
arg[0].thread->stats.Merge(arg[i].thread->stats);
|
|
}
|
|
arg[0].thread->stats.Report(name);
|
|
|
|
for (int i = 0; i < n; i++) {
|
|
delete arg[i].thread;
|
|
}
|
|
delete[] arg;
|
|
}
|
|
|
|
void Crc32c(ThreadState* thread) {
|
|
// Checksum about 500MB of data total
|
|
const int size = 4096;
|
|
const char* label = "(4K per op)";
|
|
std::string data(size, 'x');
|
|
int64_t bytes = 0;
|
|
uint32_t crc = 0;
|
|
while (bytes < 500 * 1048576) {
|
|
crc = crc32c::Value(data.data(), size);
|
|
thread->stats.FinishedSingleOp(NULL);
|
|
bytes += size;
|
|
}
|
|
// Print so result is not dead
|
|
fprintf(stderr, "... crc=0x%x\r", static_cast<unsigned int>(crc));
|
|
|
|
thread->stats.AddBytes(bytes);
|
|
thread->stats.AddMessage(label);
|
|
}
|
|
|
|
void AcquireLoad(ThreadState* thread) {
|
|
int dummy;
|
|
port::AtomicPointer ap(&dummy);
|
|
int count = 0;
|
|
void *ptr = NULL;
|
|
thread->stats.AddMessage("(each op is 1000 loads)");
|
|
while (count < 100000) {
|
|
for (int i = 0; i < 1000; i++) {
|
|
ptr = ap.Acquire_Load();
|
|
}
|
|
count++;
|
|
thread->stats.FinishedSingleOp(NULL);
|
|
}
|
|
if (ptr == NULL) exit(1); // Disable unused variable warning.
|
|
}
|
|
|
|
void SnappyCompress(ThreadState* thread) {
|
|
RandomGenerator gen;
|
|
Slice input = gen.Generate(Options().block_size);
|
|
int64_t bytes = 0;
|
|
int64_t produced = 0;
|
|
bool ok = true;
|
|
std::string compressed;
|
|
while (ok && bytes < 1024 * 1048576) { // Compress 1G
|
|
ok = port::Snappy_Compress(input.data(), input.size(), &compressed);
|
|
produced += compressed.size();
|
|
bytes += input.size();
|
|
thread->stats.FinishedSingleOp(NULL);
|
|
}
|
|
|
|
if (!ok) {
|
|
thread->stats.AddMessage("(snappy failure)");
|
|
} else {
|
|
char buf[100];
|
|
snprintf(buf, sizeof(buf), "(output: %.1f%%)",
|
|
(produced * 100.0) / bytes);
|
|
thread->stats.AddMessage(buf);
|
|
thread->stats.AddBytes(bytes);
|
|
}
|
|
}
|
|
|
|
void SnappyUncompress(ThreadState* thread) {
|
|
RandomGenerator gen;
|
|
Slice input = gen.Generate(Options().block_size);
|
|
std::string compressed;
|
|
bool ok = port::Snappy_Compress(input.data(), input.size(), &compressed);
|
|
int64_t bytes = 0;
|
|
char* uncompressed = new char[input.size()];
|
|
while (ok && bytes < 1024 * 1048576) { // Compress 1G
|
|
ok = port::Snappy_Uncompress(compressed.data(), compressed.size(),
|
|
uncompressed);
|
|
bytes += input.size();
|
|
thread->stats.FinishedSingleOp(NULL);
|
|
}
|
|
delete[] uncompressed;
|
|
|
|
if (!ok) {
|
|
thread->stats.AddMessage("(snappy failure)");
|
|
} else {
|
|
thread->stats.AddBytes(bytes);
|
|
}
|
|
}
|
|
|
|
void Open() {
|
|
assert(db_ == NULL);
|
|
Options options;
|
|
options.create_if_missing = !FLAGS_use_existing_db;
|
|
options.block_cache = cache_;
|
|
options.write_buffer_size = FLAGS_write_buffer_size;
|
|
options.block_size = FLAGS_block_size;
|
|
options.filter_policy = filter_policy_;
|
|
options.max_open_files = FLAGS_open_files;
|
|
options.statistics = dbstats;
|
|
options.env = FLAGS_env;
|
|
options.disableDataSync = FLAGS_disable_data_sync;
|
|
options.use_fsync = FLAGS_use_fsync;
|
|
options.num_levels = FLAGS_num_levels;
|
|
options.target_file_size_base = FLAGS_target_file_size_base;
|
|
options.target_file_size_multiplier = FLAGS_target_file_size_multiplier;
|
|
options.max_bytes_for_level_base = FLAGS_max_bytes_for_level_base;
|
|
options.max_bytes_for_level_multiplier =
|
|
FLAGS_max_bytes_for_level_multiplier;
|
|
options.level0_stop_writes_trigger = FLAGS_level0_stop_writes_trigger;
|
|
options.level0_file_num_compaction_trigger =
|
|
FLAGS_level0_file_num_compaction_trigger;
|
|
options.level0_slowdown_writes_trigger =
|
|
FLAGS_level0_slowdown_writes_trigger;
|
|
options.compression = FLAGS_compression_type;
|
|
options.disable_seek_compaction = FLAGS_disable_seek_compaction;
|
|
options.delete_obsolete_files_period_micros =
|
|
FLAGS_delete_obsolete_files_period_micros;
|
|
Status s = DB::Open(options, FLAGS_db, &db_);
|
|
if (!s.ok()) {
|
|
fprintf(stderr, "open error: %s\n", s.ToString().c_str());
|
|
exit(1);
|
|
}
|
|
}
|
|
|
|
void WriteSeq(ThreadState* thread) {
|
|
DoWrite(thread, true);
|
|
}
|
|
|
|
void WriteRandom(ThreadState* thread) {
|
|
DoWrite(thread, false);
|
|
}
|
|
|
|
void DoWrite(ThreadState* thread, bool seq) {
|
|
if (num_ != FLAGS_num) {
|
|
char msg[100];
|
|
snprintf(msg, sizeof(msg), "(%ld ops)", num_);
|
|
thread->stats.AddMessage(msg);
|
|
}
|
|
|
|
RandomGenerator gen;
|
|
WriteBatch batch;
|
|
Status s;
|
|
int64_t bytes = 0;
|
|
for (int i = 0; i < writes_; i += entries_per_batch_) {
|
|
batch.Clear();
|
|
for (int j = 0; j < entries_per_batch_; j++) {
|
|
const int k = seq ? i+j : (thread->rand.Next() % FLAGS_num);
|
|
char key[100];
|
|
snprintf(key, sizeof(key), "%016d", k);
|
|
batch.Put(key, gen.Generate(value_size_));
|
|
bytes += value_size_ + strlen(key);
|
|
thread->stats.FinishedSingleOp(db_);
|
|
}
|
|
s = db_->Write(write_options_, &batch);
|
|
if (!s.ok()) {
|
|
fprintf(stderr, "put error: %s\n", s.ToString().c_str());
|
|
exit(1);
|
|
}
|
|
}
|
|
thread->stats.AddBytes(bytes);
|
|
}
|
|
|
|
void ReadSequential(ThreadState* thread) {
|
|
Iterator* iter = db_->NewIterator(ReadOptions(FLAGS_verify_checksum, true));
|
|
long i = 0;
|
|
int64_t bytes = 0;
|
|
for (iter->SeekToFirst(); i < reads_ && iter->Valid(); iter->Next()) {
|
|
bytes += iter->key().size() + iter->value().size();
|
|
thread->stats.FinishedSingleOp(db_);
|
|
++i;
|
|
}
|
|
delete iter;
|
|
thread->stats.AddBytes(bytes);
|
|
}
|
|
|
|
void ReadReverse(ThreadState* thread) {
|
|
Iterator* iter = db_->NewIterator(ReadOptions(FLAGS_verify_checksum, true));
|
|
long i = 0;
|
|
int64_t bytes = 0;
|
|
for (iter->SeekToLast(); i < reads_ && iter->Valid(); iter->Prev()) {
|
|
bytes += iter->key().size() + iter->value().size();
|
|
thread->stats.FinishedSingleOp(db_);
|
|
++i;
|
|
}
|
|
delete iter;
|
|
thread->stats.AddBytes(bytes);
|
|
}
|
|
|
|
void ReadRandom(ThreadState* thread) {
|
|
ReadOptions options(FLAGS_verify_checksum, true);
|
|
std::string value;
|
|
long found = 0;
|
|
for (long i = 0; i < reads_; i++) {
|
|
char key[100];
|
|
const int k = thread->rand.Next() % FLAGS_num;
|
|
snprintf(key, sizeof(key), "%016d", k);
|
|
if (db_->Get(options, key, &value).ok()) {
|
|
found++;
|
|
}
|
|
thread->stats.FinishedSingleOp(db_);
|
|
}
|
|
char msg[100];
|
|
snprintf(msg, sizeof(msg), "(%ld of %ld found)", found, num_);
|
|
thread->stats.AddMessage(msg);
|
|
}
|
|
|
|
void ReadMissing(ThreadState* thread) {
|
|
ReadOptions options(FLAGS_verify_checksum, true);
|
|
std::string value;
|
|
for (long i = 0; i < reads_; i++) {
|
|
char key[100];
|
|
const int k = thread->rand.Next() % FLAGS_num;
|
|
snprintf(key, sizeof(key), "%016d.", k);
|
|
db_->Get(options, key, &value);
|
|
thread->stats.FinishedSingleOp(db_);
|
|
}
|
|
}
|
|
|
|
void ReadHot(ThreadState* thread) {
|
|
ReadOptions options(FLAGS_verify_checksum, true);
|
|
std::string value;
|
|
const long range = (FLAGS_num + 99) / 100;
|
|
for (long i = 0; i < reads_; i++) {
|
|
char key[100];
|
|
const int k = thread->rand.Next() % range;
|
|
snprintf(key, sizeof(key), "%016d", k);
|
|
db_->Get(options, key, &value);
|
|
thread->stats.FinishedSingleOp(db_);
|
|
}
|
|
}
|
|
|
|
void SeekRandom(ThreadState* thread) {
|
|
ReadOptions options(FLAGS_verify_checksum, true);
|
|
std::string value;
|
|
long found = 0;
|
|
for (long i = 0; i < reads_; i++) {
|
|
Iterator* iter = db_->NewIterator(options);
|
|
char key[100];
|
|
const int k = thread->rand.Next() % FLAGS_num;
|
|
snprintf(key, sizeof(key), "%016d", k);
|
|
iter->Seek(key);
|
|
if (iter->Valid() && iter->key() == key) found++;
|
|
delete iter;
|
|
thread->stats.FinishedSingleOp(db_);
|
|
}
|
|
char msg[100];
|
|
snprintf(msg, sizeof(msg), "(%ld of %ld found)", found, num_);
|
|
thread->stats.AddMessage(msg);
|
|
}
|
|
|
|
void DoDelete(ThreadState* thread, bool seq) {
|
|
RandomGenerator gen;
|
|
WriteBatch batch;
|
|
Status s;
|
|
for (int i = 0; i < num_; i += entries_per_batch_) {
|
|
batch.Clear();
|
|
for (int j = 0; j < entries_per_batch_; j++) {
|
|
const int k = seq ? i+j : (thread->rand.Next() % FLAGS_num);
|
|
char key[100];
|
|
snprintf(key, sizeof(key), "%016d", k);
|
|
batch.Delete(key);
|
|
thread->stats.FinishedSingleOp(db_);
|
|
}
|
|
s = db_->Write(write_options_, &batch);
|
|
if (!s.ok()) {
|
|
fprintf(stderr, "del error: %s\n", s.ToString().c_str());
|
|
exit(1);
|
|
}
|
|
}
|
|
}
|
|
|
|
void DeleteSeq(ThreadState* thread) {
|
|
DoDelete(thread, true);
|
|
}
|
|
|
|
void DeleteRandom(ThreadState* thread) {
|
|
DoDelete(thread, false);
|
|
}
|
|
|
|
void ReadWhileWriting(ThreadState* thread) {
|
|
if (thread->tid > 0) {
|
|
ReadRandom(thread);
|
|
} else {
|
|
// Special thread that keeps writing until other threads are done.
|
|
RandomGenerator gen;
|
|
while (true) {
|
|
{
|
|
MutexLock l(&thread->shared->mu);
|
|
if (thread->shared->num_done + 1 >= thread->shared->num_initialized) {
|
|
// Other threads have finished
|
|
break;
|
|
}
|
|
}
|
|
|
|
const int k = thread->rand.Next() % FLAGS_num;
|
|
char key[100];
|
|
snprintf(key, sizeof(key), "%016d", k);
|
|
Status s = db_->Put(write_options_, key, gen.Generate(value_size_));
|
|
if (!s.ok()) {
|
|
fprintf(stderr, "put error: %s\n", s.ToString().c_str());
|
|
exit(1);
|
|
}
|
|
}
|
|
|
|
// Do not count any of the preceding work/delay in stats.
|
|
thread->stats.Start(thread->tid);
|
|
}
|
|
}
|
|
|
|
//
|
|
// This is diffferent from ReadWhileWriting because it does not use
|
|
// an extra thread.
|
|
//
|
|
void ReadRandomWriteRandom(ThreadState* thread) {
|
|
ReadOptions options(FLAGS_verify_checksum, true);
|
|
RandomGenerator gen;
|
|
std::string value;
|
|
long found = 0;
|
|
int get_weight = 0;
|
|
int put_weight = 0;
|
|
long reads_done = 0;
|
|
long writes_done = 0;
|
|
// the number of iterations is the larger of read_ or write_
|
|
for (long i = 0; i < readwrites_; i++) {
|
|
char key[100];
|
|
const int k = thread->rand.Next() % FLAGS_num;
|
|
snprintf(key, sizeof(key), "%016d", k);
|
|
if (get_weight == 0 && put_weight == 0) {
|
|
// one batch complated, reinitialize for next batch
|
|
get_weight = FLAGS_readwritepercent;
|
|
put_weight = 100 - get_weight;
|
|
}
|
|
if (get_weight > 0) {
|
|
// do all the gets first
|
|
if (db_->Get(options, key, &value).ok()) {
|
|
found++;
|
|
}
|
|
get_weight--;
|
|
reads_done++;
|
|
} else if (put_weight > 0) {
|
|
// then do all the corresponding number of puts
|
|
// for all the gets we have done earlier
|
|
Status s = db_->Put(write_options_, key, gen.Generate(value_size_));
|
|
if (!s.ok()) {
|
|
fprintf(stderr, "put error: %s\n", s.ToString().c_str());
|
|
exit(1);
|
|
}
|
|
put_weight--;
|
|
writes_done++;
|
|
}
|
|
thread->stats.FinishedSingleOp(db_);
|
|
}
|
|
char msg[100];
|
|
snprintf(msg, sizeof(msg), "( reads:%ld writes:%ld total:%ld )",
|
|
reads_done, writes_done, readwrites_);
|
|
thread->stats.AddMessage(msg);
|
|
}
|
|
|
|
void Compact(ThreadState* thread) {
|
|
db_->CompactRange(NULL, NULL);
|
|
}
|
|
|
|
void PrintStats(const char* key) {
|
|
std::string stats;
|
|
if (!db_->GetProperty(key, &stats)) {
|
|
stats = "(failed)";
|
|
}
|
|
fprintf(stdout, "\n%s\n", stats.c_str());
|
|
}
|
|
|
|
static void WriteToFile(void* arg, const char* buf, int n) {
|
|
reinterpret_cast<WritableFile*>(arg)->Append(Slice(buf, n));
|
|
}
|
|
|
|
void HeapProfile() {
|
|
char fname[100];
|
|
snprintf(fname, sizeof(fname), "%s/heap-%04d", FLAGS_db, ++heap_counter_);
|
|
WritableFile* file;
|
|
Status s = FLAGS_env->NewWritableFile(fname, &file);
|
|
if (!s.ok()) {
|
|
fprintf(stderr, "%s\n", s.ToString().c_str());
|
|
return;
|
|
}
|
|
bool ok = port::GetHeapProfile(WriteToFile, file);
|
|
delete file;
|
|
if (!ok) {
|
|
fprintf(stderr, "heap profiling not supported\n");
|
|
FLAGS_env->DeleteFile(fname);
|
|
}
|
|
}
|
|
};
|
|
|
|
} // namespace leveldb
|
|
|
|
int main(int argc, char** argv) {
|
|
FLAGS_write_buffer_size = leveldb::Options().write_buffer_size;
|
|
FLAGS_open_files = leveldb::Options().max_open_files;
|
|
// Compression test code above refers to FLAGS_block_size
|
|
FLAGS_block_size = leveldb::Options().block_size;
|
|
std::string default_db_path;
|
|
|
|
for (int i = 1; i < argc; i++) {
|
|
double d;
|
|
int n;
|
|
long l;
|
|
char junk;
|
|
char hdfsname[2048];
|
|
if (leveldb::Slice(argv[i]).starts_with("--benchmarks=")) {
|
|
FLAGS_benchmarks = argv[i] + strlen("--benchmarks=");
|
|
} else if (sscanf(argv[i], "--compression_ratio=%lf%c", &d, &junk) == 1) {
|
|
FLAGS_compression_ratio = d;
|
|
} else if (sscanf(argv[i], "--histogram=%d%c", &n, &junk) == 1 &&
|
|
(n == 0 || n == 1)) {
|
|
FLAGS_histogram = n;
|
|
} else if (sscanf(argv[i], "--use_existing_db=%d%c", &n, &junk) == 1 &&
|
|
(n == 0 || n == 1)) {
|
|
FLAGS_use_existing_db = n;
|
|
} else if (sscanf(argv[i], "--num=%ld%c", &l, &junk) == 1) {
|
|
FLAGS_num = l;
|
|
} else if (sscanf(argv[i], "--reads=%d%c", &n, &junk) == 1) {
|
|
FLAGS_reads = n;
|
|
} else if (sscanf(argv[i], "--threads=%d%c", &n, &junk) == 1) {
|
|
FLAGS_threads = n;
|
|
} else if (sscanf(argv[i], "--value_size=%d%c", &n, &junk) == 1) {
|
|
FLAGS_value_size = n;
|
|
} else if (sscanf(argv[i], "--write_buffer_size=%d%c", &n, &junk) == 1) {
|
|
FLAGS_write_buffer_size = n;
|
|
} else if (sscanf(argv[i], "--cache_size=%ld%c", &l, &junk) == 1) {
|
|
FLAGS_cache_size = l;
|
|
} else if (sscanf(argv[i], "--block_size=%d%c", &n, &junk) == 1) {
|
|
FLAGS_block_size = n;
|
|
} else if (sscanf(argv[i], "--cache_numshardbits=%d%c", &n, &junk) == 1) {
|
|
if (n < 20) {
|
|
FLAGS_cache_numshardbits = n;
|
|
} else {
|
|
fprintf(stderr, "The cache cannot be sharded into 2**%d pieces\n", n);
|
|
exit(1);
|
|
}
|
|
} else if (sscanf(argv[i], "--bloom_bits=%d%c", &n, &junk) == 1) {
|
|
FLAGS_bloom_bits = n;
|
|
} else if (sscanf(argv[i], "--open_files=%d%c", &n, &junk) == 1) {
|
|
FLAGS_open_files = n;
|
|
} else if (strncmp(argv[i], "--db=", 5) == 0) {
|
|
FLAGS_db = argv[i] + 5;
|
|
} else if (sscanf(argv[i], "--verify_checksum=%d%c", &n, &junk) == 1 &&
|
|
(n == 0 || n == 1)) {
|
|
FLAGS_verify_checksum = n;
|
|
} else if (sscanf(argv[i], "--bufferedio=%d%c", &n, &junk) == 1 &&
|
|
(n == 0 || n == 1)) {
|
|
useOsBuffer = n;
|
|
} else if (sscanf(argv[i], "--mmap_read=%d%c", &n, &junk) == 1 &&
|
|
(n == 0 || n == 1)) {
|
|
useMmapRead = n;
|
|
} else if (sscanf(argv[i], "--mmap_write=%d%c", &n, &junk) == 1 &&
|
|
(n == 0 || n == 1)) {
|
|
useMmapWrite = n;
|
|
} else if (sscanf(argv[i], "--readahead=%d%c", &n, &junk) == 1 &&
|
|
(n == 0 || n == 1)) {
|
|
useFsReadAhead = n;
|
|
} else if (sscanf(argv[i], "--statistics=%d%c", &n, &junk) == 1 &&
|
|
(n == 0 || n == 1)) {
|
|
if (n == 1) {
|
|
dbstats = new leveldb::DBStatistics();
|
|
FLAGS_statistics = true;
|
|
}
|
|
} else if (sscanf(argv[i], "--writes=%d%c", &n, &junk) == 1) {
|
|
FLAGS_writes = n;
|
|
} else if (sscanf(argv[i], "--sync=%d%c", &n, &junk) == 1 &&
|
|
(n == 0 || n == 1)) {
|
|
FLAGS_sync = n;
|
|
} else if (sscanf(argv[i], "--readwritepercent=%d%c", &n, &junk) == 1 &&
|
|
n > 0 && n < 100) {
|
|
FLAGS_readwritepercent = n;
|
|
} else if (sscanf(argv[i], "--disable_data_sync=%d%c", &n, &junk) == 1 &&
|
|
(n == 0 || n == 1)) {
|
|
FLAGS_disable_data_sync = n;
|
|
} else if (sscanf(argv[i], "--use_fsync=%d%c", &n, &junk) == 1 &&
|
|
(n == 0 || n == 1)) {
|
|
FLAGS_use_fsync = n;
|
|
} else if (sscanf(argv[i], "--disable_wal=%d%c", &n, &junk) == 1 &&
|
|
(n == 0 || n == 1)) {
|
|
FLAGS_disable_wal = n;
|
|
} else if (sscanf(argv[i], "--hdfs=%s", hdfsname) == 1) {
|
|
FLAGS_env = new leveldb::HdfsEnv(hdfsname);
|
|
} else if (sscanf(argv[i], "--num_levels=%d%c",
|
|
&n, &junk) == 1) {
|
|
FLAGS_num_levels = n;
|
|
} else if (sscanf(argv[i], "--target_file_size_base=%d%c",
|
|
&n, &junk) == 1) {
|
|
FLAGS_target_file_size_base = n;
|
|
} else if ( sscanf(argv[i], "--target_file_size_multiplier=%d%c",
|
|
&n, &junk) == 1) {
|
|
FLAGS_target_file_size_multiplier = n;
|
|
} else if (
|
|
sscanf(argv[i], "--max_bytes_for_level_base=%d%c", &n, &junk) == 1) {
|
|
FLAGS_max_bytes_for_level_base = n;
|
|
} else if (sscanf(argv[i], "--max_bytes_for_level_multiplier=%d%c",
|
|
&n, &junk) == 1) {
|
|
FLAGS_max_bytes_for_level_multiplier = n;
|
|
} else if (sscanf(argv[i],"--level0_stop_writes_trigger=%d%c",
|
|
&n, &junk) == 1) {
|
|
FLAGS_level0_stop_writes_trigger = n;
|
|
} else if (sscanf(argv[i],"--level0_slowdown_writes_trigger=%d%c",
|
|
&n, &junk) == 1) {
|
|
FLAGS_level0_slowdown_writes_trigger = n;
|
|
} else if (sscanf(argv[i],"--level0_file_num_compaction_trigger=%d%c",
|
|
&n, &junk) == 1) {
|
|
FLAGS_level0_file_num_compaction_trigger = n;
|
|
} else if (strncmp(argv[i], "--compression_type=", 19) == 0) {
|
|
const char* ctype = argv[i] + 19;
|
|
if (!strcasecmp(ctype, "none"))
|
|
FLAGS_compression_type = leveldb::kNoCompression;
|
|
else if (!strcasecmp(ctype, "snappy"))
|
|
FLAGS_compression_type = leveldb::kSnappyCompression;
|
|
else if (!strcasecmp(ctype, "zlib"))
|
|
FLAGS_compression_type = leveldb::kZlibCompression;
|
|
else if (!strcasecmp(ctype, "bzip2"))
|
|
FLAGS_compression_type = leveldb::kBZip2Compression;
|
|
else {
|
|
fprintf(stdout, "Cannot parse %s\n", argv[i]);
|
|
}
|
|
} else if (sscanf(argv[i], "--disable_seek_compaction=%d%c", &n, &junk) == 1
|
|
&& (n == 0 || n == 1)) {
|
|
FLAGS_disable_seek_compaction = n;
|
|
} else if (sscanf(argv[i], "--delete_obsolete_files_period_micros=%ld%c",
|
|
&l, &junk) == 1) {
|
|
FLAGS_delete_obsolete_files_period_micros = l;
|
|
} else if (sscanf(argv[i], "--stats_interval=%d%c", &n, &junk) == 1 &&
|
|
n >= 0 && n < 2000000000) {
|
|
FLAGS_stats_interval = n;
|
|
} else {
|
|
fprintf(stderr, "Invalid flag '%s'\n", argv[i]);
|
|
exit(1);
|
|
}
|
|
}
|
|
|
|
// Choose a location for the test database if none given with --db=<path>
|
|
if (FLAGS_db == NULL) {
|
|
leveldb::Env::Default()->GetTestDirectory(&default_db_path);
|
|
default_db_path += "/dbbench";
|
|
FLAGS_db = default_db_path.c_str();
|
|
}
|
|
|
|
leveldb::Benchmark benchmark;
|
|
benchmark.Run();
|
|
return 0;
|
|
}
|