rocksdb/db_stress_tool/db_stress_stat.h

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// Copyright (c) 2011-present, Facebook, Inc. All rights reserved.
// This source code is licensed under both the GPLv2 (found in the
// COPYING file in the root directory) and Apache 2.0 License
// (found in the LICENSE.Apache file in the root directory).
#pragma once
#include <cinttypes>
#include <memory>
#include <queue>
#include <unordered_set>
#include "monitoring/histogram.h"
#include "port/port.h"
#include "rocksdb/env.h"
#include "rocksdb/snapshot.h"
#include "rocksdb/statistics.h"
#include "util/gflags_compat.h"
#include "util/random.h"
DECLARE_bool(histogram);
DECLARE_bool(progress_reports);
namespace ROCKSDB_NAMESPACE {
// Database statistics
static std::shared_ptr<ROCKSDB_NAMESPACE::Statistics> dbstats;
static std::shared_ptr<ROCKSDB_NAMESPACE::Statistics> dbstats_secondaries;
class Stats {
private:
uint64_t start_;
uint64_t finish_;
double seconds_;
long done_;
long gets_;
long prefixes_;
long writes_;
long deletes_;
size_t single_deletes_;
long iterator_size_sums_;
long founds_;
long iterations_;
long range_deletions_;
long covered_by_range_deletions_;
long errors_;
long num_compact_files_succeed_;
long num_compact_files_failed_;
int next_report_;
size_t bytes_;
uint64_t last_op_finish_;
HistogramImpl hist_;
public:
Stats() {}
void Start() {
next_report_ = 100;
hist_.Clear();
done_ = 0;
gets_ = 0;
prefixes_ = 0;
writes_ = 0;
deletes_ = 0;
single_deletes_ = 0;
iterator_size_sums_ = 0;
founds_ = 0;
iterations_ = 0;
range_deletions_ = 0;
covered_by_range_deletions_ = 0;
errors_ = 0;
bytes_ = 0;
seconds_ = 0;
num_compact_files_succeed_ = 0;
num_compact_files_failed_ = 0;
start_ = Env::Default()->NowMicros();
last_op_finish_ = start_;
finish_ = start_;
}
void Merge(const Stats& other) {
hist_.Merge(other.hist_);
done_ += other.done_;
gets_ += other.gets_;
prefixes_ += other.prefixes_;
writes_ += other.writes_;
deletes_ += other.deletes_;
single_deletes_ += other.single_deletes_;
iterator_size_sums_ += other.iterator_size_sums_;
founds_ += other.founds_;
iterations_ += other.iterations_;
range_deletions_ += other.range_deletions_;
covered_by_range_deletions_ = other.covered_by_range_deletions_;
errors_ += other.errors_;
bytes_ += other.bytes_;
seconds_ += other.seconds_;
num_compact_files_succeed_ += other.num_compact_files_succeed_;
num_compact_files_failed_ += other.num_compact_files_failed_;
if (other.start_ < start_) start_ = other.start_;
if (other.finish_ > finish_) finish_ = other.finish_;
}
void Stop() {
finish_ = Env::Default()->NowMicros();
seconds_ = (finish_ - start_) * 1e-6;
}
void FinishedSingleOp() {
if (FLAGS_histogram) {
auto now = Env::Default()->NowMicros();
auto micros = now - last_op_finish_;
hist_.Add(micros);
if (micros > 20000) {
fprintf(stdout, "long op: %" PRIu64 " micros%30s\r", micros, "");
}
last_op_finish_ = now;
}
done_++;
if (FLAGS_progress_reports) {
if (done_ >= next_report_) {
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(stdout, "... finished %ld ops%30s\r", done_, "");
}
}
}
void AddBytesForWrites(long nwrites, size_t nbytes) {
writes_ += nwrites;
bytes_ += nbytes;
}
void AddGets(long ngets, long nfounds) {
founds_ += nfounds;
gets_ += ngets;
}
void AddPrefixes(long nprefixes, long count) {
prefixes_ += nprefixes;
iterator_size_sums_ += count;
}
void AddIterations(long n) { iterations_ += n; }
void AddDeletes(long n) { deletes_ += n; }
void AddSingleDeletes(size_t n) { single_deletes_ += n; }
void AddRangeDeletions(long n) { range_deletions_ += n; }
void AddCoveredByRangeDeletions(long n) { covered_by_range_deletions_ += n; }
void AddErrors(long n) { errors_ += n; }
void AddNumCompactFilesSucceed(long n) { num_compact_files_succeed_ += n; }
void AddNumCompactFilesFailed(long n) { num_compact_files_failed_ += n; }
void Report(const char* name) {
std::string extra;
if (bytes_ < 1 || done_ < 1) {
fprintf(stderr, "No writes or ops?\n");
return;
}
double elapsed = (finish_ - start_) * 1e-6;
double bytes_mb = bytes_ / 1048576.0;
double rate = bytes_mb / elapsed;
double throughput = (double)done_ / elapsed;
fprintf(stdout, "%-12s: ", name);
fprintf(stdout, "%.3f micros/op %ld ops/sec\n", seconds_ * 1e6 / done_,
(long)throughput);
fprintf(stdout, "%-12s: Wrote %.2f MB (%.2f MB/sec) (%ld%% of %ld ops)\n",
"", bytes_mb, rate, (100 * writes_) / done_, done_);
fprintf(stdout, "%-12s: Wrote %ld times\n", "", writes_);
fprintf(stdout, "%-12s: Deleted %ld times\n", "", deletes_);
fprintf(stdout, "%-12s: Single deleted %" ROCKSDB_PRIszt " times\n", "",
single_deletes_);
fprintf(stdout, "%-12s: %ld read and %ld found the key\n", "", gets_,
founds_);
fprintf(stdout, "%-12s: Prefix scanned %ld times\n", "", prefixes_);
fprintf(stdout, "%-12s: Iterator size sum is %ld\n", "",
iterator_size_sums_);
fprintf(stdout, "%-12s: Iterated %ld times\n", "", iterations_);
fprintf(stdout, "%-12s: Deleted %ld key-ranges\n", "", range_deletions_);
fprintf(stdout, "%-12s: Range deletions covered %ld keys\n", "",
covered_by_range_deletions_);
fprintf(stdout, "%-12s: Got errors %ld times\n", "", errors_);
fprintf(stdout, "%-12s: %ld CompactFiles() succeed\n", "",
num_compact_files_succeed_);
fprintf(stdout, "%-12s: %ld CompactFiles() did not succeed\n", "",
num_compact_files_failed_);
if (FLAGS_histogram) {
fprintf(stdout, "Microseconds per op:\n%s\n", hist_.ToString().c_str());
}
fflush(stdout);
}
};
} // namespace ROCKSDB_NAMESPACE