mirror of
https://github.com/facebook/rocksdb.git
synced 2024-11-30 13:41:46 +00:00
3c327ac2d0
Summary: Closes https://github.com/facebook/rocksdb/pull/2589 Differential Revision: D5431502 Pulled By: siying fbshipit-source-id: 8ebf8c87883daa9daa54b2303d11ce01ab1f6f75
136 lines
4.6 KiB
C++
136 lines
4.6 KiB
C++
// 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).
|
|
//
|
|
#include <ratio>
|
|
|
|
#include "db/write_controller.h"
|
|
|
|
#include "rocksdb/env.h"
|
|
#include "util/testharness.h"
|
|
|
|
namespace rocksdb {
|
|
|
|
class WriteControllerTest : public testing::Test {};
|
|
|
|
class TimeSetEnv : public EnvWrapper {
|
|
public:
|
|
explicit TimeSetEnv() : EnvWrapper(nullptr) {}
|
|
uint64_t now_micros_ = 6666;
|
|
virtual uint64_t NowNanos() override { return now_micros_ * std::milli::den; }
|
|
};
|
|
|
|
TEST_F(WriteControllerTest, ChangeDelayRateTest) {
|
|
TimeSetEnv env;
|
|
WriteController controller(40000000u); // also set max delayed rate
|
|
controller.set_delayed_write_rate(10000000u);
|
|
auto delay_token_0 =
|
|
controller.GetDelayToken(controller.delayed_write_rate());
|
|
ASSERT_EQ(static_cast<uint64_t>(2000000),
|
|
controller.GetDelay(&env, 20000000u));
|
|
auto delay_token_1 = controller.GetDelayToken(2000000u);
|
|
ASSERT_EQ(static_cast<uint64_t>(10000000),
|
|
controller.GetDelay(&env, 20000000u));
|
|
auto delay_token_2 = controller.GetDelayToken(1000000u);
|
|
ASSERT_EQ(static_cast<uint64_t>(20000000),
|
|
controller.GetDelay(&env, 20000000u));
|
|
auto delay_token_3 = controller.GetDelayToken(20000000u);
|
|
ASSERT_EQ(static_cast<uint64_t>(1000000),
|
|
controller.GetDelay(&env, 20000000u));
|
|
// This is more than max rate. Max delayed rate will be used.
|
|
auto delay_token_4 =
|
|
controller.GetDelayToken(controller.delayed_write_rate() * 3);
|
|
ASSERT_EQ(static_cast<uint64_t>(500000),
|
|
controller.GetDelay(&env, 20000000u));
|
|
}
|
|
|
|
TEST_F(WriteControllerTest, SanityTest) {
|
|
WriteController controller(10000000u);
|
|
auto stop_token_1 = controller.GetStopToken();
|
|
auto stop_token_2 = controller.GetStopToken();
|
|
|
|
ASSERT_TRUE(controller.IsStopped());
|
|
stop_token_1.reset();
|
|
ASSERT_TRUE(controller.IsStopped());
|
|
stop_token_2.reset();
|
|
ASSERT_FALSE(controller.IsStopped());
|
|
|
|
TimeSetEnv env;
|
|
|
|
auto delay_token_1 = controller.GetDelayToken(10000000u);
|
|
ASSERT_EQ(static_cast<uint64_t>(2000000),
|
|
controller.GetDelay(&env, 20000000u));
|
|
|
|
env.now_micros_ += 1999900u; // sleep debt 1000
|
|
|
|
auto delay_token_2 = controller.GetDelayToken(10000000u);
|
|
// Rate reset after changing the token.
|
|
ASSERT_EQ(static_cast<uint64_t>(2000000),
|
|
controller.GetDelay(&env, 20000000u));
|
|
|
|
env.now_micros_ += 1999900u; // sleep debt 1000
|
|
|
|
// One refill: 10240 bytes allowed, 1000 used, 9240 left
|
|
ASSERT_EQ(static_cast<uint64_t>(1124), controller.GetDelay(&env, 1000u));
|
|
env.now_micros_ += 1124u; // sleep debt 0
|
|
|
|
delay_token_2.reset();
|
|
// 1000 used, 8240 left
|
|
ASSERT_EQ(static_cast<uint64_t>(0), controller.GetDelay(&env, 1000u));
|
|
|
|
env.now_micros_ += 100u; // sleep credit 100
|
|
// 1000 used, 7240 left
|
|
ASSERT_EQ(static_cast<uint64_t>(0), controller.GetDelay(&env, 1000u));
|
|
|
|
env.now_micros_ += 100u; // sleep credit 200
|
|
// One refill: 10240 fileed, sleep credit generates 2000. 8000 used
|
|
// 7240 + 10240 + 2000 - 8000 = 11480 left
|
|
ASSERT_EQ(static_cast<uint64_t>(1024u), controller.GetDelay(&env, 8000u));
|
|
|
|
env.now_micros_ += 200u; // sleep debt 824
|
|
// 1000 used, 10480 left.
|
|
ASSERT_EQ(static_cast<uint64_t>(0), controller.GetDelay(&env, 1000u));
|
|
|
|
env.now_micros_ += 200u; // sleep debt 624
|
|
// Out of bound sleep, still 10480 left
|
|
ASSERT_EQ(static_cast<uint64_t>(3000624u),
|
|
controller.GetDelay(&env, 30000000u));
|
|
|
|
env.now_micros_ += 3000724u; // sleep credit 100
|
|
// 6000 used, 4480 left.
|
|
ASSERT_EQ(static_cast<uint64_t>(0), controller.GetDelay(&env, 6000u));
|
|
|
|
env.now_micros_ += 200u; // sleep credit 300
|
|
// One refill, credit 4480 balance + 3000 credit + 10240 refill
|
|
// Use 8000, 9720 left
|
|
ASSERT_EQ(static_cast<uint64_t>(1024u), controller.GetDelay(&env, 8000u));
|
|
|
|
env.now_micros_ += 3024u; // sleep credit 2000
|
|
|
|
// 1720 left
|
|
ASSERT_EQ(static_cast<uint64_t>(0u), controller.GetDelay(&env, 8000u));
|
|
|
|
// 1720 balance + 20000 credit = 20170 left
|
|
// Use 8000, 12170 left
|
|
ASSERT_EQ(static_cast<uint64_t>(0u), controller.GetDelay(&env, 8000u));
|
|
|
|
// 4170 left
|
|
ASSERT_EQ(static_cast<uint64_t>(0u), controller.GetDelay(&env, 8000u));
|
|
|
|
// Need a refill
|
|
ASSERT_EQ(static_cast<uint64_t>(1024u), controller.GetDelay(&env, 9000u));
|
|
|
|
delay_token_1.reset();
|
|
ASSERT_EQ(static_cast<uint64_t>(0), controller.GetDelay(&env, 30000000u));
|
|
delay_token_1.reset();
|
|
ASSERT_FALSE(controller.IsStopped());
|
|
}
|
|
|
|
} // namespace rocksdb
|
|
|
|
int main(int argc, char** argv) {
|
|
::testing::InitGoogleTest(&argc, argv);
|
|
return RUN_ALL_TESTS();
|
|
}
|