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rocksdb/tools/trace_analyzer_test.cc
Changyu Bi 8515bd50c9 Support read rate-limiting in SequentialFileReader (#9973) 
Summary:
Added rate limiter and read rate-limiting support to SequentialFileReader. I've updated call sites to SequentialFileReader::Read with appropriate IO priority (or left a TODO and specified IO_TOTAL for now).

The PR is separated into four commits: the first one added the rate-limiting support, but with some fixes in the unit test since the number of request bytes from rate limiter in SequentialFileReader are not accurate (there is overcharge at EOF). The second commit fixed this by allowing SequentialFileReader to check file size and determine how many bytes are left in the file to read. The third commit added benchmark related code. The fourth commit moved the logic of using file size to avoid overcharging the rate limiter into backup engine (the main user of SequentialFileReader).

Pull Request resolved: https://github.com/facebook/rocksdb/pull/9973

Test Plan:
- `make check`, backup_engine_test covers usage of SequentialFileReader with rate limiter.
- Run db_bench to check if rate limiting is throttling as expected: Verified that reads and writes are together throttled at 2MB/s, and at 0.2MB chunks that are 100ms apart.
  - Set up: `./db_bench --benchmarks=fillrandom -db=/dev/shm/test_rocksdb`
  - Benchmark:
```
strace -ttfe read,write ./db_bench --benchmarks=backup -db=/dev/shm/test_rocksdb --backup_rate_limit=2097152 --use_existing_db
strace -ttfe read,write ./db_bench --benchmarks=restore -db=/dev/shm/test_rocksdb --restore_rate_limit=2097152 --use_existing_db
```
- db bench on backup and restore to ensure no performance regression.
  - backup (avg over 50 runs): pre-change: 1.90443e+06 micros/op; post-change: 1.8993e+06 micros/op (improve by 0.2%)
  - restore (avg over 50 runs): pre-change: 1.79105e+06 micros/op; post-change: 1.78192e+06 micros/op (improve by 0.5%)

```
# Set up
./db_bench --benchmarks=fillrandom -db=/tmp/test_rocksdb -num=10000000

# benchmark
TEST_TMPDIR=/tmp/test_rocksdb
NUM_RUN=50
for ((j=0;j<$NUM_RUN;j++))
do
   ./db_bench -db=$TEST_TMPDIR -num=10000000 -benchmarks=backup -use_existing_db | egrep 'backup'
  # Restore
  #./db_bench -db=$TEST_TMPDIR -num=10000000 -benchmarks=restore -use_existing_db
done > rate_limit.txt && awk -v NUM_RUN=$NUM_RUN '{sum+=$3;sum_sqrt+=$3^2}END{print sum/NUM_RUN, sqrt(sum_sqrt/NUM_RUN-(sum/NUM_RUN)^2)}' rate_limit.txt >> rate_limit_2.txt
```

Reviewed By: hx235

Differential Revision: D36327418

Pulled By: cbi42

fbshipit-source-id: e75d4307cff815945482df5ba630c1e88d064691
2022-05-24 10:28:57 -07:00

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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).
//
// Copyright (c) 2012 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.
#ifndef ROCKSDB_LITE
#ifndef GFLAGS
#include <cstdio>
int main() {
fprintf(stderr, "Please install gflags to run trace_analyzer test\n");
return 0;
}
#else
#include <chrono>
#include <cstdio>
#include <cstdlib>
#include <sstream>
#include <thread>
#include "db/db_test_util.h"
#include "file/line_file_reader.h"
#include "rocksdb/db.h"
#include "rocksdb/env.h"
#include "rocksdb/status.h"
#include "rocksdb/trace_reader_writer.h"
#include "test_util/testharness.h"
#include "test_util/testutil.h"
#include "tools/trace_analyzer_tool.h"
#include "trace_replay/trace_replay.h"
namespace ROCKSDB_NAMESPACE {
namespace {
static const int kMaxArgCount = 100;
static const size_t kArgBufferSize = 100000;
} // namespace
// Note that, the QPS part verification of the analyzing result is not robost
// enough and causes the failure in some rare cases. Disable them temporally and
// wait for future refactor.
// The helper functions for the test
class TraceAnalyzerTest : public testing::Test {
public:
TraceAnalyzerTest() : rnd_(0xFB) {
// test_path_ = test::TmpDir() + "trace_analyzer_test";
test_path_ = test::PerThreadDBPath("trace_analyzer_test");
env_ = ROCKSDB_NAMESPACE::Env::Default();
env_->CreateDir(test_path_).PermitUncheckedError();
dbname_ = test_path_ + "/db";
}
~TraceAnalyzerTest() override {}
void GenerateTrace(std::string trace_path) {
Options options;
options.create_if_missing = true;
options.merge_operator = MergeOperators::CreatePutOperator();
Slice upper_bound("a");
Slice lower_bound("abce");
ReadOptions ro;
ro.iterate_upper_bound = &upper_bound;
ro.iterate_lower_bound = &lower_bound;
WriteOptions wo;
TraceOptions trace_opt;
DB* db_ = nullptr;
std::string value;
std::unique_ptr<TraceWriter> trace_writer;
Iterator* single_iter = nullptr;
ASSERT_OK(
NewFileTraceWriter(env_, env_options_, trace_path, &trace_writer));
ASSERT_OK(DB::Open(options, dbname_, &db_));
ASSERT_OK(db_->StartTrace(trace_opt, std::move(trace_writer)));
WriteBatch batch;
ASSERT_OK(batch.Put("a", "aaaaaaaaa"));
ASSERT_OK(batch.Merge("b", "aaaaaaaaaaaaaaaaaaaa"));
ASSERT_OK(batch.Delete("c"));
ASSERT_OK(batch.SingleDelete("d"));
ASSERT_OK(batch.DeleteRange("e", "f"));
ASSERT_OK(db_->Write(wo, &batch));
std::vector<Slice> keys;
keys.push_back("a");
keys.push_back("b");
keys.push_back("df");
keys.push_back("gege");
keys.push_back("hjhjhj");
std::vector<std::string> values;
std::vector<Status> ss = db_->MultiGet(ro, keys, &values);
ASSERT_GE(ss.size(), 0);
ASSERT_OK(ss[0]);
ASSERT_NOK(ss[2]);
std::vector<ColumnFamilyHandle*> cfs(2, db_->DefaultColumnFamily());
std::vector<PinnableSlice> values2(keys.size());
db_->MultiGet(ro, 2, cfs.data(), keys.data(), values2.data(), ss.data(),
false);
ASSERT_OK(ss[0]);
db_->MultiGet(ro, db_->DefaultColumnFamily(), 2, keys.data() + 3,
values2.data(), ss.data(), false);
ASSERT_OK(db_->Get(ro, "a", &value));
single_iter = db_->NewIterator(ro);
single_iter->Seek("a");
ASSERT_OK(single_iter->status());
single_iter->SeekForPrev("b");
ASSERT_OK(single_iter->status());
delete single_iter;
std::this_thread::sleep_for (std::chrono::seconds(1));
db_->Get(ro, "g", &value).PermitUncheckedError();
ASSERT_OK(db_->EndTrace());
ASSERT_OK(env_->FileExists(trace_path));
std::unique_ptr<WritableFile> whole_f;
std::string whole_path = test_path_ + "/0.txt";
ASSERT_OK(env_->NewWritableFile(whole_path, &whole_f, env_options_));
std::string whole_str = "0x61\n0x62\n0x63\n0x64\n0x65\n0x66\n";
ASSERT_OK(whole_f->Append(whole_str));
delete db_;
ASSERT_OK(DestroyDB(dbname_, options));
}
void RunTraceAnalyzer(const std::vector<std::string>& args) {
char arg_buffer[kArgBufferSize];
char* argv[kMaxArgCount];
int argc = 0;
int cursor = 0;
for (const auto& arg : args) {
ASSERT_LE(cursor + arg.size() + 1, kArgBufferSize);
ASSERT_LE(argc + 1, kMaxArgCount);
snprintf(arg_buffer + cursor, arg.size() + 1, "%s", arg.c_str());
argv[argc++] = arg_buffer + cursor;
cursor += static_cast<int>(arg.size()) + 1;
}
ASSERT_EQ(0, ROCKSDB_NAMESPACE::trace_analyzer_tool(argc, argv));
}
void CheckFileContent(const std::vector<std::string>& cnt,
std::string file_path, bool full_content) {
const auto& fs = env_->GetFileSystem();
FileOptions fopts(env_options_);
ASSERT_OK(fs->FileExists(file_path, fopts.io_options, nullptr));
std::unique_ptr<FSSequentialFile> file;
ASSERT_OK(fs->NewSequentialFile(file_path, fopts, &file, nullptr));
LineFileReader lf_reader(std::move(file), file_path,
4096 /* filereadahead_size */);
std::vector<std::string> result;
std::string line;
while (
lf_reader.ReadLine(&line, Env::IO_TOTAL /* rate_limiter_priority */)) {
result.push_back(line);
}
ASSERT_OK(lf_reader.GetStatus());
size_t min_size = std::min(cnt.size(), result.size());
for (size_t i = 0; i < min_size; i++) {
if (full_content) {
ASSERT_EQ(result[i], cnt[i]);
} else {
ASSERT_EQ(result[i][0], cnt[i][0]);
}
}
return;
}
void AnalyzeTrace(std::vector<std::string>& paras_diff,
std::string output_path, std::string trace_path) {
std::vector<std::string> paras = {"./trace_analyzer",
"-convert_to_human_readable_trace",
"-output_key_stats",
"-output_access_count_stats",
"-output_prefix=test",
"-output_prefix_cut=1",
"-output_time_series",
"-output_value_distribution",
"-output_qps_stats",
"-no_key",
"-no_print"};
for (auto& para : paras_diff) {
paras.push_back(para);
}
Status s = env_->FileExists(trace_path);
if (!s.ok()) {
GenerateTrace(trace_path);
}
ASSERT_OK(env_->CreateDir(output_path));
RunTraceAnalyzer(paras);
}
ROCKSDB_NAMESPACE::Env* env_;
EnvOptions env_options_;
std::string test_path_;
std::string dbname_;
Random rnd_;
};
TEST_F(TraceAnalyzerTest, Get) {
std::string trace_path = test_path_ + "/trace";
std::string output_path = test_path_ + "/get";
std::string file_path;
std::vector<std::string> paras = {
"-analyze_get=true", "-analyze_put=false",
"-analyze_delete=false", "-analyze_single_delete=false",
"-analyze_range_delete=false", "-analyze_iterator=false",
"-analyze_multiget=false"};
paras.push_back("-output_dir=" + output_path);
paras.push_back("-trace_path=" + trace_path);
paras.push_back("-key_space_dir=" + test_path_);
AnalyzeTrace(paras, output_path, trace_path);
// check the key_stats file
std::vector<std::string> k_stats = {"0 10 0 1 1.000000", "0 10 1 1 1.000000"};
file_path = output_path + "/test-get-0-accessed_key_stats.txt";
CheckFileContent(k_stats, file_path, true);
// Check the access count distribution
std::vector<std::string> k_dist = {"access_count: 1 num: 2"};
file_path = output_path + "/test-get-0-accessed_key_count_distribution.txt";
CheckFileContent(k_dist, file_path, true);
// Check the trace sequence
std::vector<std::string> k_sequence = {"1", "5", "2", "3", "4", "8",
"8", "8", "8", "8", "8", "8",
"8", "8", "0", "6", "7", "0"};
file_path = output_path + "/test-human_readable_trace.txt";
CheckFileContent(k_sequence, file_path, false);
// Check the prefix
std::vector<std::string> k_prefix = {"0 0 0 0.000000 0.000000 0x30",
"1 1 1 1.000000 1.000000 0x61"};
file_path = output_path + "/test-get-0-accessed_key_prefix_cut.txt";
CheckFileContent(k_prefix, file_path, true);
// Check the time series
std::vector<std::string> k_series = {"0 1533000630 0", "0 1533000630 1"};
file_path = output_path + "/test-get-0-time_series.txt";
CheckFileContent(k_series, file_path, false);
// Check the accessed key in whole key space
std::vector<std::string> k_whole_access = {"0 1"};
file_path = output_path + "/test-get-0-whole_key_stats.txt";
CheckFileContent(k_whole_access, file_path, true);
// Check the whole key prefix cut
std::vector<std::string> k_whole_prefix = {"0 0x61", "1 0x62", "2 0x63",
"3 0x64", "4 0x65", "5 0x66"};
file_path = output_path + "/test-get-0-whole_key_prefix_cut.txt";
CheckFileContent(k_whole_prefix, file_path, true);
/*
// Check the overall qps
std::vector<std::string> all_qps = {"1 0 0 0 0 0 0 0 0 1"};
file_path = output_path + "/test-qps_stats.txt";
CheckFileContent(all_qps, file_path, true);
// Check the qps of get
std::vector<std::string> get_qps = {"1"};
file_path = output_path + "/test-get-0-qps_stats.txt";
CheckFileContent(get_qps, file_path, true);
// Check the top k qps prefix cut
std::vector<std::string> top_qps = {"At time: 0 with QPS: 1",
"The prefix: 0x61 Access count: 1"};
file_path = output_path + "/test-get-0-accessed_top_k_qps_prefix_cut.txt";
CheckFileContent(top_qps, file_path, true);
*/
}
// Test analyzing of Put
TEST_F(TraceAnalyzerTest, Put) {
std::string trace_path = test_path_ + "/trace";
std::string output_path = test_path_ + "/put";
std::string file_path;
std::vector<std::string> paras = {
"-analyze_get=false", "-analyze_put=true",
"-analyze_delete=false", "-analyze_single_delete=false",
"-analyze_range_delete=false", "-analyze_iterator=false",
"-analyze_multiget=false"};
paras.push_back("-output_dir=" + output_path);
paras.push_back("-trace_path=" + trace_path);
paras.push_back("-key_space_dir=" + test_path_);
AnalyzeTrace(paras, output_path, trace_path);
// check the key_stats file
std::vector<std::string> k_stats = {"0 9 0 1 1.000000"};
file_path = output_path + "/test-put-0-accessed_key_stats.txt";
CheckFileContent(k_stats, file_path, true);
// Check the access count distribution
std::vector<std::string> k_dist = {"access_count: 1 num: 1"};
file_path = output_path + "/test-put-0-accessed_key_count_distribution.txt";
CheckFileContent(k_dist, file_path, true);
// Check the trace sequence
std::vector<std::string> k_sequence = {"1", "5", "2", "3", "4", "8",
"8", "8", "8", "8", "8", "8",
"8", "8", "0", "6", "7", "0"};
file_path = output_path + "/test-human_readable_trace.txt";
CheckFileContent(k_sequence, file_path, false);
// Check the prefix
std::vector<std::string> k_prefix = {"0 0 0 0.000000 0.000000 0x30"};
file_path = output_path + "/test-put-0-accessed_key_prefix_cut.txt";
CheckFileContent(k_prefix, file_path, true);
// Check the time series
std::vector<std::string> k_series = {"1 1533056278 0"};
file_path = output_path + "/test-put-0-time_series.txt";
CheckFileContent(k_series, file_path, false);
// Check the accessed key in whole key space
std::vector<std::string> k_whole_access = {"0 1"};
file_path = output_path + "/test-put-0-whole_key_stats.txt";
CheckFileContent(k_whole_access, file_path, true);
// Check the whole key prefix cut
std::vector<std::string> k_whole_prefix = {"0 0x61", "1 0x62", "2 0x63",
"3 0x64", "4 0x65", "5 0x66"};
file_path = output_path + "/test-put-0-whole_key_prefix_cut.txt";
CheckFileContent(k_whole_prefix, file_path, true);
// Check the overall qps
std::vector<std::string> all_qps = {"0 1 0 0 0 0 0 0 0 1"};
file_path = output_path + "/test-qps_stats.txt";
CheckFileContent(all_qps, file_path, true);
/*
// Check the qps of Put
std::vector<std::string> get_qps = {"1"};
file_path = output_path + "/test-put-0-qps_stats.txt";
CheckFileContent(get_qps, file_path, true);
// Check the top k qps prefix cut
std::vector<std::string> top_qps = {"At time: 0 with QPS: 1",
"The prefix: 0x61 Access count: 1"};
file_path = output_path + "/test-put-0-accessed_top_k_qps_prefix_cut.txt";
CheckFileContent(top_qps, file_path, true);
// Check the value size distribution
std::vector<std::string> value_dist = {
"Number_of_value_size_between 0 and 16 is: 1"};
file_path = output_path + "/test-put-0-accessed_value_size_distribution.txt";
CheckFileContent(value_dist, file_path, true);
*/
}
// Test analyzing of delete
TEST_F(TraceAnalyzerTest, Delete) {
std::string trace_path = test_path_ + "/trace";
std::string output_path = test_path_ + "/delete";
std::string file_path;
std::vector<std::string> paras = {
"-analyze_get=false", "-analyze_put=false",
"-analyze_delete=true", "-analyze_single_delete=false",
"-analyze_range_delete=false", "-analyze_iterator=false",
"-analyze_multiget=false"};
paras.push_back("-output_dir=" + output_path);
paras.push_back("-trace_path=" + trace_path);
paras.push_back("-key_space_dir=" + test_path_);
AnalyzeTrace(paras, output_path, trace_path);
// check the key_stats file
std::vector<std::string> k_stats = {"0 10 0 1 1.000000"};
file_path = output_path + "/test-delete-0-accessed_key_stats.txt";
CheckFileContent(k_stats, file_path, true);
// Check the access count distribution
std::vector<std::string> k_dist = {"access_count: 1 num: 1"};
file_path =
output_path + "/test-delete-0-accessed_key_count_distribution.txt";
CheckFileContent(k_dist, file_path, true);
// Check the trace sequence
std::vector<std::string> k_sequence = {"1", "5", "2", "3", "4", "8",
"8", "8", "8", "8", "8", "8",
"8", "8", "0", "6", "7", "0"};
file_path = output_path + "/test-human_readable_trace.txt";
CheckFileContent(k_sequence, file_path, false);
// Check the prefix
std::vector<std::string> k_prefix = {"0 0 0 0.000000 0.000000 0x30"};
file_path = output_path + "/test-delete-0-accessed_key_prefix_cut.txt";
CheckFileContent(k_prefix, file_path, true);
// Check the time series
std::vector<std::string> k_series = {"2 1533000630 0"};
file_path = output_path + "/test-delete-0-time_series.txt";
CheckFileContent(k_series, file_path, false);
// Check the accessed key in whole key space
std::vector<std::string> k_whole_access = {"2 1"};
file_path = output_path + "/test-delete-0-whole_key_stats.txt";
CheckFileContent(k_whole_access, file_path, true);
// Check the whole key prefix cut
std::vector<std::string> k_whole_prefix = {"0 0x61", "1 0x62", "2 0x63",
"3 0x64", "4 0x65", "5 0x66"};
file_path = output_path + "/test-delete-0-whole_key_prefix_cut.txt";
CheckFileContent(k_whole_prefix, file_path, true);
/*
// Check the overall qps
std::vector<std::string> all_qps = {"0 0 1 0 0 0 0 0 0 1"};
file_path = output_path + "/test-qps_stats.txt";
CheckFileContent(all_qps, file_path, true);
// Check the qps of Delete
std::vector<std::string> get_qps = {"1"};
file_path = output_path + "/test-delete-0-qps_stats.txt";
CheckFileContent(get_qps, file_path, true);
// Check the top k qps prefix cut
std::vector<std::string> top_qps = {"At time: 0 with QPS: 1",
"The prefix: 0x63 Access count: 1"};
file_path = output_path + "/test-delete-0-accessed_top_k_qps_prefix_cut.txt";
CheckFileContent(top_qps, file_path, true);
*/
}
// Test analyzing of Merge
TEST_F(TraceAnalyzerTest, Merge) {
std::string trace_path = test_path_ + "/trace";
std::string output_path = test_path_ + "/merge";
std::string file_path;
std::vector<std::string> paras = {
"-analyze_get=false", "-analyze_put=false",
"-analyze_delete=false", "-analyze_merge=true",
"-analyze_single_delete=false", "-analyze_range_delete=false",
"-analyze_iterator=false", "-analyze_multiget=false"};
paras.push_back("-output_dir=" + output_path);
paras.push_back("-trace_path=" + trace_path);
paras.push_back("-key_space_dir=" + test_path_);
AnalyzeTrace(paras, output_path, trace_path);
// check the key_stats file
std::vector<std::string> k_stats = {"0 20 0 1 1.000000"};
file_path = output_path + "/test-merge-0-accessed_key_stats.txt";
CheckFileContent(k_stats, file_path, true);
// Check the access count distribution
std::vector<std::string> k_dist = {"access_count: 1 num: 1"};
file_path = output_path + "/test-merge-0-accessed_key_count_distribution.txt";
CheckFileContent(k_dist, file_path, true);
// Check the trace sequence
std::vector<std::string> k_sequence = {"1", "5", "2", "3", "4", "8",
"8", "8", "8", "8", "8", "8",
"8", "8", "0", "6", "7", "0"};
file_path = output_path + "/test-human_readable_trace.txt";
CheckFileContent(k_sequence, file_path, false);
// Check the prefix
std::vector<std::string> k_prefix = {"0 0 0 0.000000 0.000000 0x30"};
file_path = output_path + "/test-merge-0-accessed_key_prefix_cut.txt";
CheckFileContent(k_prefix, file_path, true);
// Check the time series
std::vector<std::string> k_series = {"5 1533000630 0"};
file_path = output_path + "/test-merge-0-time_series.txt";
CheckFileContent(k_series, file_path, false);
// Check the accessed key in whole key space
std::vector<std::string> k_whole_access = {"1 1"};
file_path = output_path + "/test-merge-0-whole_key_stats.txt";
CheckFileContent(k_whole_access, file_path, true);
// Check the whole key prefix cut
std::vector<std::string> k_whole_prefix = {"0 0x61", "1 0x62", "2 0x63",
"3 0x64", "4 0x65", "5 0x66"};
file_path = output_path + "/test-merge-0-whole_key_prefix_cut.txt";
CheckFileContent(k_whole_prefix, file_path, true);
/*
// Check the overall qps
std::vector<std::string> all_qps = {"0 0 0 0 0 1 0 0 0 1"};
file_path = output_path + "/test-qps_stats.txt";
CheckFileContent(all_qps, file_path, true);
// Check the qps of Merge
std::vector<std::string> get_qps = {"1"};
file_path = output_path + "/test-merge-0-qps_stats.txt";
CheckFileContent(get_qps, file_path, true);
// Check the top k qps prefix cut
std::vector<std::string> top_qps = {"At time: 0 with QPS: 1",
"The prefix: 0x62 Access count: 1"};
file_path = output_path + "/test-merge-0-accessed_top_k_qps_prefix_cut.txt";
CheckFileContent(top_qps, file_path, true);
*/
// Check the value size distribution
std::vector<std::string> value_dist = {
"Number_of_value_size_between 0 and 24 is: 1"};
file_path =
output_path + "/test-merge-0-accessed_value_size_distribution.txt";
CheckFileContent(value_dist, file_path, true);
}
// Test analyzing of SingleDelete
TEST_F(TraceAnalyzerTest, SingleDelete) {
std::string trace_path = test_path_ + "/trace";
std::string output_path = test_path_ + "/single_delete";
std::string file_path;
std::vector<std::string> paras = {
"-analyze_get=false", "-analyze_put=false",
"-analyze_delete=false", "-analyze_merge=false",
"-analyze_single_delete=true", "-analyze_range_delete=false",
"-analyze_iterator=false", "-analyze_multiget=false"};
paras.push_back("-output_dir=" + output_path);
paras.push_back("-trace_path=" + trace_path);
paras.push_back("-key_space_dir=" + test_path_);
AnalyzeTrace(paras, output_path, trace_path);
// check the key_stats file
std::vector<std::string> k_stats = {"0 10 0 1 1.000000"};
file_path = output_path + "/test-single_delete-0-accessed_key_stats.txt";
CheckFileContent(k_stats, file_path, true);
// Check the access count distribution
std::vector<std::string> k_dist = {"access_count: 1 num: 1"};
file_path =
output_path + "/test-single_delete-0-accessed_key_count_distribution.txt";
CheckFileContent(k_dist, file_path, true);
// Check the trace sequence
std::vector<std::string> k_sequence = {"1", "5", "2", "3", "4", "8",
"8", "8", "8", "8", "8", "8",
"8", "8", "0", "6", "7", "0"};
file_path = output_path + "/test-human_readable_trace.txt";
CheckFileContent(k_sequence, file_path, false);
// Check the prefix
std::vector<std::string> k_prefix = {"0 0 0 0.000000 0.000000 0x30"};
file_path = output_path + "/test-single_delete-0-accessed_key_prefix_cut.txt";
CheckFileContent(k_prefix, file_path, true);
// Check the time series
std::vector<std::string> k_series = {"3 1533000630 0"};
file_path = output_path + "/test-single_delete-0-time_series.txt";
CheckFileContent(k_series, file_path, false);
// Check the accessed key in whole key space
std::vector<std::string> k_whole_access = {"3 1"};
file_path = output_path + "/test-single_delete-0-whole_key_stats.txt";
CheckFileContent(k_whole_access, file_path, true);
// Check the whole key prefix cut
std::vector<std::string> k_whole_prefix = {"0 0x61", "1 0x62", "2 0x63",
"3 0x64", "4 0x65", "5 0x66"};
file_path = output_path + "/test-single_delete-0-whole_key_prefix_cut.txt";
CheckFileContent(k_whole_prefix, file_path, true);
/*
// Check the overall qps
std::vector<std::string> all_qps = {"0 0 0 1 0 0 0 0 0 1"};
file_path = output_path + "/test-qps_stats.txt";
CheckFileContent(all_qps, file_path, true);
// Check the qps of SingleDelete
std::vector<std::string> get_qps = {"1"};
file_path = output_path + "/test-single_delete-0-qps_stats.txt";
CheckFileContent(get_qps, file_path, true);
// Check the top k qps prefix cut
std::vector<std::string> top_qps = {"At time: 0 with QPS: 1",
"The prefix: 0x64 Access count: 1"};
file_path =
output_path + "/test-single_delete-0-accessed_top_k_qps_prefix_cut.txt";
CheckFileContent(top_qps, file_path, true);
*/
}
// Test analyzing of delete
TEST_F(TraceAnalyzerTest, DeleteRange) {
std::string trace_path = test_path_ + "/trace";
std::string output_path = test_path_ + "/range_delete";
std::string file_path;
std::vector<std::string> paras = {
"-analyze_get=false", "-analyze_put=false",
"-analyze_delete=false", "-analyze_merge=false",
"-analyze_single_delete=false", "-analyze_range_delete=true",
"-analyze_iterator=false", "-analyze_multiget=false"};
paras.push_back("-output_dir=" + output_path);
paras.push_back("-trace_path=" + trace_path);
paras.push_back("-key_space_dir=" + test_path_);
AnalyzeTrace(paras, output_path, trace_path);
// check the key_stats file
std::vector<std::string> k_stats = {"0 10 0 1 1.000000", "0 10 1 1 1.000000"};
file_path = output_path + "/test-range_delete-0-accessed_key_stats.txt";
CheckFileContent(k_stats, file_path, true);
// Check the access count distribution
std::vector<std::string> k_dist = {"access_count: 1 num: 2"};
file_path =
output_path + "/test-range_delete-0-accessed_key_count_distribution.txt";
CheckFileContent(k_dist, file_path, true);
// Check the trace sequence
std::vector<std::string> k_sequence = {"1", "5", "2", "3", "4", "8",
"8", "8", "8", "8", "8", "8",
"8", "8", "0", "6", "7", "0"};
file_path = output_path + "/test-human_readable_trace.txt";
CheckFileContent(k_sequence, file_path, false);
// Check the prefix
std::vector<std::string> k_prefix = {"0 0 0 0.000000 0.000000 0x30",
"1 1 1 1.000000 1.000000 0x65"};
file_path = output_path + "/test-range_delete-0-accessed_key_prefix_cut.txt";
CheckFileContent(k_prefix, file_path, true);
// Check the time series
std::vector<std::string> k_series = {"4 1533000630 0", "4 1533060100 1"};
file_path = output_path + "/test-range_delete-0-time_series.txt";
CheckFileContent(k_series, file_path, false);
// Check the accessed key in whole key space
std::vector<std::string> k_whole_access = {"4 1", "5 1"};
file_path = output_path + "/test-range_delete-0-whole_key_stats.txt";
CheckFileContent(k_whole_access, file_path, true);
// Check the whole key prefix cut
std::vector<std::string> k_whole_prefix = {"0 0x61", "1 0x62", "2 0x63",
"3 0x64", "4 0x65", "5 0x66"};
file_path = output_path + "/test-range_delete-0-whole_key_prefix_cut.txt";
CheckFileContent(k_whole_prefix, file_path, true);
/*
// Check the overall qps
std::vector<std::string> all_qps = {"0 0 0 0 2 0 0 0 0 2"};
file_path = output_path + "/test-qps_stats.txt";
CheckFileContent(all_qps, file_path, true);
// Check the qps of DeleteRange
std::vector<std::string> get_qps = {"2"};
file_path = output_path + "/test-range_delete-0-qps_stats.txt";
CheckFileContent(get_qps, file_path, true);
// Check the top k qps prefix cut
std::vector<std::string> top_qps = {"At time: 0 with QPS: 2",
"The prefix: 0x65 Access count: 1",
"The prefix: 0x66 Access count: 1"};
file_path =
output_path + "/test-range_delete-0-accessed_top_k_qps_prefix_cut.txt";
CheckFileContent(top_qps, file_path, true);
*/
}
// Test analyzing of Iterator
TEST_F(TraceAnalyzerTest, Iterator) {
std::string trace_path = test_path_ + "/trace";
std::string output_path = test_path_ + "/iterator";
std::string file_path;
std::vector<std::string> paras = {
"-analyze_get=false", "-analyze_put=false",
"-analyze_delete=false", "-analyze_merge=false",
"-analyze_single_delete=false", "-analyze_range_delete=false",
"-analyze_iterator=true", "-analyze_multiget=false"};
paras.push_back("-output_dir=" + output_path);
paras.push_back("-trace_path=" + trace_path);
paras.push_back("-key_space_dir=" + test_path_);
AnalyzeTrace(paras, output_path, trace_path);
// Check the output of Seek
// check the key_stats file
std::vector<std::string> k_stats = {"0 10 0 1 1.000000"};
file_path = output_path + "/test-iterator_Seek-0-accessed_key_stats.txt";
CheckFileContent(k_stats, file_path, true);
// Check the access count distribution
std::vector<std::string> k_dist = {"access_count: 1 num: 1"};
file_path =
output_path + "/test-iterator_Seek-0-accessed_key_count_distribution.txt";
CheckFileContent(k_dist, file_path, true);
// Check the trace sequence
std::vector<std::string> k_sequence = {"1", "5", "2", "3", "4", "8",
"8", "8", "8", "8", "8", "8",
"8", "8", "0", "6", "7", "0"};
file_path = output_path + "/test-human_readable_trace.txt";
CheckFileContent(k_sequence, file_path, false);
// Check the prefix
std::vector<std::string> k_prefix = {"0 0 0 0.000000 0.000000 0x30"};
file_path = output_path + "/test-iterator_Seek-0-accessed_key_prefix_cut.txt";
CheckFileContent(k_prefix, file_path, true);
// Check the time series
std::vector<std::string> k_series = {"6 1 0"};
file_path = output_path + "/test-iterator_Seek-0-time_series.txt";
CheckFileContent(k_series, file_path, false);
// Check the accessed key in whole key space
std::vector<std::string> k_whole_access = {"0 1"};
file_path = output_path + "/test-iterator_Seek-0-whole_key_stats.txt";
CheckFileContent(k_whole_access, file_path, true);
// Check the whole key prefix cut
std::vector<std::string> k_whole_prefix = {"0 0x61", "1 0x62", "2 0x63",
"3 0x64", "4 0x65", "5 0x66"};
file_path = output_path + "/test-iterator_Seek-0-whole_key_prefix_cut.txt";
CheckFileContent(k_whole_prefix, file_path, true);
/*
// Check the overall qps
std::vector<std::string> all_qps = {"0 0 0 0 0 0 1 1 0 2"};
file_path = output_path + "/test-qps_stats.txt";
CheckFileContent(all_qps, file_path, true);
// Check the qps of Iterator_Seek
std::vector<std::string> get_qps = {"1"};
file_path = output_path + "/test-iterator_Seek-0-qps_stats.txt";
CheckFileContent(get_qps, file_path, true);
// Check the top k qps prefix cut
std::vector<std::string> top_qps = {"At time: 0 with QPS: 1",
"The prefix: 0x61 Access count: 1"};
file_path =
output_path + "/test-iterator_Seek-0-accessed_top_k_qps_prefix_cut.txt";
CheckFileContent(top_qps, file_path, true);
*/
// Check the output of SeekForPrev
// check the key_stats file
k_stats = {"0 10 0 1 1.000000"};
file_path =
output_path + "/test-iterator_SeekForPrev-0-accessed_key_stats.txt";
CheckFileContent(k_stats, file_path, true);
// Check the access count distribution
k_dist = {"access_count: 1 num: 1"};
file_path =
output_path +
"/test-iterator_SeekForPrev-0-accessed_key_count_distribution.txt";
CheckFileContent(k_dist, file_path, true);
// Check the prefix
k_prefix = {"0 0 0 0.000000 0.000000 0x30"};
file_path =
output_path + "/test-iterator_SeekForPrev-0-accessed_key_prefix_cut.txt";
CheckFileContent(k_prefix, file_path, true);
// Check the time series
k_series = {"7 0 0"};
file_path = output_path + "/test-iterator_SeekForPrev-0-time_series.txt";
CheckFileContent(k_series, file_path, false);
// Check the accessed key in whole key space
k_whole_access = {"1 1"};
file_path = output_path + "/test-iterator_SeekForPrev-0-whole_key_stats.txt";
CheckFileContent(k_whole_access, file_path, true);
// Check the whole key prefix cut
k_whole_prefix = {"0 0x61", "1 0x62", "2 0x63", "3 0x64", "4 0x65", "5 0x66"};
file_path =
output_path + "/test-iterator_SeekForPrev-0-whole_key_prefix_cut.txt";
CheckFileContent(k_whole_prefix, file_path, true);
/*
// Check the qps of Iterator_SeekForPrev
get_qps = {"1"};
file_path = output_path + "/test-iterator_SeekForPrev-0-qps_stats.txt";
CheckFileContent(get_qps, file_path, true);
// Check the top k qps prefix cut
top_qps = {"At time: 0 with QPS: 1", "The prefix: 0x62 Access count: 1"};
file_path = output_path +
"/test-iterator_SeekForPrev-0-accessed_top_k_qps_prefix_cut.txt";
CheckFileContent(top_qps, file_path, true);
*/
}
// Test analyzing of multiget
TEST_F(TraceAnalyzerTest, MultiGet) {
std::string trace_path = test_path_ + "/trace";
std::string output_path = test_path_ + "/multiget";
std::string file_path;
std::vector<std::string> paras = {
"-analyze_get=false", "-analyze_put=false",
"-analyze_delete=false", "-analyze_merge=false",
"-analyze_single_delete=false", "-analyze_range_delete=true",
"-analyze_iterator=false", "-analyze_multiget=true"};
paras.push_back("-output_dir=" + output_path);
paras.push_back("-trace_path=" + trace_path);
paras.push_back("-key_space_dir=" + test_path_);
AnalyzeTrace(paras, output_path, trace_path);
// check the key_stats file
std::vector<std::string> k_stats = {"0 10 0 2 1.000000", "0 10 1 2 1.000000",
"0 10 2 1 1.000000", "0 10 3 2 1.000000",
"0 10 4 2 1.000000"};
file_path = output_path + "/test-multiget-0-accessed_key_stats.txt";
CheckFileContent(k_stats, file_path, true);
// Check the access count distribution
std::vector<std::string> k_dist = {"access_count: 1 num: 1",
"access_count: 2 num: 4"};
file_path =
output_path + "/test-multiget-0-accessed_key_count_distribution.txt";
CheckFileContent(k_dist, file_path, true);
// Check the trace sequence
std::vector<std::string> k_sequence = {"1", "5", "2", "3", "4", "8",
"8", "8", "8", "8", "8", "8",
"8", "8", "0", "6", "7", "0"};
file_path = output_path + "/test-human_readable_trace.txt";
CheckFileContent(k_sequence, file_path, false);
// Check the prefix
std::vector<std::string> k_prefix = {
"0 0 0 0.000000 0.000000 0x30", "1 2 1 2.000000 1.000000 0x61",
"2 2 1 2.000000 1.000000 0x62", "3 1 1 1.000000 1.000000 0x64",
"4 2 1 2.000000 1.000000 0x67"};
file_path = output_path + "/test-multiget-0-accessed_key_prefix_cut.txt";
CheckFileContent(k_prefix, file_path, true);
// Check the time series
std::vector<std::string> k_series = {"8 0 0", "8 0 1", "8 0 2",
"8 0 3", "8 0 4", "8 0 0",
"8 0 1", "8 0 3", "8 0 4"};
file_path = output_path + "/test-multiget-0-time_series.txt";
CheckFileContent(k_series, file_path, false);
// Check the accessed key in whole key space
std::vector<std::string> k_whole_access = {"0 2", "1 2"};
file_path = output_path + "/test-multiget-0-whole_key_stats.txt";
CheckFileContent(k_whole_access, file_path, true);
// Check the whole key prefix cut
std::vector<std::string> k_whole_prefix = {"0 0x61", "1 0x62", "2 0x63",
"3 0x64", "4 0x65", "5 0x66"};
file_path = output_path + "/test-multiget-0-whole_key_prefix_cut.txt";
CheckFileContent(k_whole_prefix, file_path, true);
/*
// Check the overall qps. We have 3 MultiGet queries and it requested 9 keys
// in total
std::vector<std::string> all_qps = {"0 0 0 0 2 0 0 0 9 11"};
file_path = output_path + "/test-qps_stats.txt";
CheckFileContent(all_qps, file_path, true);
// Check the qps of DeleteRange
std::vector<std::string> get_qps = {"9"};
file_path = output_path + "/test-multiget-0-qps_stats.txt";
CheckFileContent(get_qps, file_path, true);
// Check the top k qps prefix cut
std::vector<std::string> top_qps = {
"At time: 0 with QPS: 9", "The prefix: 0x61 Access count: 2",
"The prefix: 0x62 Access count: 2", "The prefix: 0x64 Access count: 1",
"The prefix: 0x67 Access count: 2", "The prefix: 0x68 Access count: 2"};
file_path =
output_path + "/test-multiget-0-accessed_top_k_qps_prefix_cut.txt";
CheckFileContent(top_qps, file_path, true);
*/
}
} // namespace ROCKSDB_NAMESPACE
int main(int argc, char** argv) {
::testing::InitGoogleTest(&argc, argv);
return RUN_ALL_TESTS();
}
#endif // GFLAG
#else
#include <stdio.h>
int main(int /*argc*/, char** /*argv*/) {
fprintf(stderr, "Trace_analyzer test is not supported in ROCKSDB_LITE\n");
return 0;
}
#endif // !ROCKSDB_LITE return RUN_ALL_TESTS();
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