60 lines
2.3 KiB
Rust
60 lines
2.3 KiB
Rust
// Copyright 2021 Yiyuan Liu
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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//
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mod util;
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use rust_rocksdb::{OptimisticTransactionDB, Options, SingleThreaded};
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use util::DBPath;
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#[test]
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fn test_optimistic_transaction_db_memory_usage() {
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let path = DBPath::new("_rust_rocksdb_optimistic_transaction_db memory_usage_test");
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{
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let mut options = Options::default();
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options.create_if_missing(true);
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options.enable_statistics();
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// setup cache:
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let cache = rust_rocksdb::Cache::new_lru_cache(1 << 20); // 1 MB cache
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let mut block_based_options = rust_rocksdb::BlockBasedOptions::default();
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block_based_options.set_block_cache(&cache);
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options.set_block_based_table_factory(&block_based_options);
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let db: OptimisticTransactionDB<SingleThreaded> =
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OptimisticTransactionDB::open(&options, &path).unwrap();
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let mut builder = rust_rocksdb::perf::MemoryUsageBuilder::new().unwrap();
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builder.add_db(&db);
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builder.add_cache(&cache);
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let memory_usage = builder.build().unwrap();
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for i in 1..=1000 {
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let key = format!("key{}", i);
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let value = format!("value{}", i);
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db.put(&key, &value).unwrap();
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}
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for i in 1..=1000 {
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let key = format!("key{}", i);
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let result = db.get(&key).unwrap().unwrap();
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let result_str = String::from_utf8(result).unwrap();
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assert_eq!(result_str, format!("value{}", i));
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}
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assert_ne!(memory_usage.approximate_mem_table_total(), 0);
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assert_eq!(memory_usage.approximate_mem_table_readers_total(), 0); // Equals zero!
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assert_ne!(memory_usage.approximate_cache_total(), 0);
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assert_ne!(memory_usage.approximate_mem_table_unflushed(), 0);
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}
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}
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