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https://github.com/facebook/rocksdb.git
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694988b627
Summary: Fix a bug in stall time counter. Improve its output format.
Test Plan:
export ROCKSDB_TESTS=Timeout
./db_test
./db_bench --benchmarks=fillrandom --stats_interval=10000 --statistics=true --stats_per_interval=1 --num=1000000 --threads=4 --level0_stop_writes_trigger=3 --level0_slowdown_writes_trigger=2
sample output:
Uptime(secs): 35.8 total, 0.0 interval
Cumulative writes: 359590 writes, 359589 keys, 183047 batches, 2.0 writes per batch, 0.04 GB user ingest, stall seconds: 1786.008 ms
Cumulative WAL: 359591 writes, 183046 syncs, 1.96 writes per sync, 0.04 GB written
Interval writes: 253 writes, 253 keys, 128 batches, 2.0 writes per batch, 0.0 MB user ingest, stall time: 0 us
Interval WAL: 253 writes, 128 syncs, 1.96 writes per sync, 0.00 MB written
Reviewers: MarkCallaghan, igor, sdong
Reviewed By: sdong
Subscribers: dhruba, leveldb
Differential Revision: https://reviews.facebook.net/D34275
117 lines
3.2 KiB
C++
117 lines
3.2 KiB
C++
// Copyright (c) 2013, Facebook, Inc. All rights reserved.
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// This source code is licensed under the BSD-style license found in the
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// LICENSE file in the root directory of this source tree. An additional grant
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// of patent rights can be found in the PATENTS file in the same directory.
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//
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// Copyright (c) 2011 The LevelDB Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file. See the AUTHORS file for names of contributors.
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#include "util/logging.h"
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#ifndef __STDC_FORMAT_MACROS
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#define __STDC_FORMAT_MACROS
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#endif
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#include <inttypes.h>
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#include <errno.h>
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#include <stdarg.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include "rocksdb/env.h"
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#include "rocksdb/slice.h"
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namespace rocksdb {
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// for micros < 10ms, print "XX us".
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// for micros < 10sec, print "XX ms".
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// for micros >= 10 sec, print "XX sec".
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int AppendHumanMicros(uint64_t micros, char* output, int len) {
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if (micros < 10000) {
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return snprintf(output, len, "%" PRIu64 " us", micros);
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} else if (micros < 10000000) {
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return snprintf(output, len, "%.3lf ms",
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static_cast<double>(micros) / 1000);
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} else {
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return snprintf(output, len, "%.3lf sec",
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static_cast<double>(micros) / 1000000);
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}
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}
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// for sizes >=10TB, print "XXTB"
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// for sizes >=10GB, print "XXGB"
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// etc.
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// append file size summary to output and return the len
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int AppendHumanBytes(uint64_t bytes, char* output, int len) {
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const uint64_t ull10 = 10;
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if (bytes >= ull10 << 40) {
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return snprintf(output, len, "%" PRIu64 "TB", bytes >> 40);
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} else if (bytes >= ull10 << 30) {
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return snprintf(output, len, "%" PRIu64 "GB", bytes >> 30);
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} else if (bytes >= ull10 << 20) {
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return snprintf(output, len, "%" PRIu64 "MB", bytes >> 20);
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} else if (bytes >= ull10 << 10) {
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return snprintf(output, len, "%" PRIu64 "KB", bytes >> 10);
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} else {
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return snprintf(output, len, "%" PRIu64 "B", bytes);
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}
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}
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void AppendNumberTo(std::string* str, uint64_t num) {
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char buf[30];
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snprintf(buf, sizeof(buf), "%" PRIu64, num);
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str->append(buf);
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}
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void AppendEscapedStringTo(std::string* str, const Slice& value) {
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for (size_t i = 0; i < value.size(); i++) {
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char c = value[i];
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if (c >= ' ' && c <= '~') {
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str->push_back(c);
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} else {
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char buf[10];
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snprintf(buf, sizeof(buf), "\\x%02x",
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static_cast<unsigned int>(c) & 0xff);
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str->append(buf);
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}
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}
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}
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std::string NumberToString(uint64_t num) {
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std::string r;
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AppendNumberTo(&r, num);
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return r;
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}
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std::string EscapeString(const Slice& value) {
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std::string r;
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AppendEscapedStringTo(&r, value);
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return r;
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}
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bool ConsumeDecimalNumber(Slice* in, uint64_t* val) {
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uint64_t v = 0;
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int digits = 0;
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while (!in->empty()) {
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char c = (*in)[0];
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if (c >= '0' && c <= '9') {
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++digits;
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const unsigned int delta = (c - '0');
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static const uint64_t kMaxUint64 = ~static_cast<uint64_t>(0);
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if (v > kMaxUint64/10 ||
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(v == kMaxUint64/10 && delta > kMaxUint64%10)) {
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// Overflow
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return false;
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}
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v = (v * 10) + delta;
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in->remove_prefix(1);
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} else {
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break;
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}
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}
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*val = v;
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return (digits > 0);
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}
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} // namespace rocksdb
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