943e5fb7e5
In mow, primary key cache have a big impact on load performance, so we add a new cache type to seperate it from page cache to make it more flexible in some cases
95 lines
3.8 KiB
C++
95 lines
3.8 KiB
C++
// Licensed to the Apache Software Foundation (ASF) under one
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// or more contributor license agreements. See the NOTICE file
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// distributed with this work for additional information
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// regarding copyright ownership. The ASF licenses this file
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// to you under the Apache License, Version 2.0 (the
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// "License"); you may not use this file except in compliance
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// with the License. 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,
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// software distributed under the License is distributed on an
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// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
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// KIND, either express or implied. See the License for the
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// specific language governing permissions and limitations
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// under the License.
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#include "olap/page_cache.h"
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#include <glog/logging.h>
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#include <ostream>
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namespace doris {
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StoragePageCache* StoragePageCache::_s_instance = nullptr;
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void StoragePageCache::create_global_cache(size_t capacity, int32_t index_cache_percentage,
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int64_t pk_index_cache_capacity, uint32_t num_shards) {
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DCHECK(_s_instance == nullptr);
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static StoragePageCache instance(capacity, index_cache_percentage, pk_index_cache_capacity,
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num_shards);
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_s_instance = &instance;
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}
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StoragePageCache::StoragePageCache(size_t capacity, int32_t index_cache_percentage,
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int64_t pk_index_cache_capacity, uint32_t num_shards)
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: _index_cache_percentage(index_cache_percentage) {
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if (index_cache_percentage == 0) {
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_data_page_cache = std::unique_ptr<Cache>(
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new_lru_cache("DataPageCache", capacity, LRUCacheType::SIZE, num_shards));
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} else if (index_cache_percentage == 100) {
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_index_page_cache = std::unique_ptr<Cache>(
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new_lru_cache("IndexPageCache", capacity, LRUCacheType::SIZE, num_shards));
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} else if (index_cache_percentage > 0 && index_cache_percentage < 100) {
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_data_page_cache = std::unique_ptr<Cache>(
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new_lru_cache("DataPageCache", capacity * (100 - index_cache_percentage) / 100,
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LRUCacheType::SIZE, num_shards));
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_index_page_cache = std::unique_ptr<Cache>(
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new_lru_cache("IndexPageCache", capacity * index_cache_percentage / 100,
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LRUCacheType::SIZE, num_shards));
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} else {
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CHECK(false) << "invalid index page cache percentage";
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}
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if (pk_index_cache_capacity > 0) {
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_pk_index_page_cache = std::unique_ptr<Cache>(new_lru_cache(
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"PkIndexPageCache", pk_index_cache_capacity, LRUCacheType::SIZE, num_shards));
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}
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}
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bool StoragePageCache::lookup(const CacheKey& key, PageCacheHandle* handle,
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segment_v2::PageTypePB page_type) {
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auto cache = _get_page_cache(page_type);
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auto lru_handle = cache->lookup(key.encode());
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if (lru_handle == nullptr) {
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return false;
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}
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*handle = PageCacheHandle(cache, lru_handle);
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return true;
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}
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void StoragePageCache::insert(const CacheKey& key, DataPage* data, PageCacheHandle* handle,
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segment_v2::PageTypePB page_type, bool in_memory) {
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auto deleter = [](const doris::CacheKey& key, void* value) {
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DataPage* cache_value = (DataPage*)value;
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delete cache_value;
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};
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CachePriority priority = CachePriority::NORMAL;
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if (in_memory) {
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priority = CachePriority::DURABLE;
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}
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auto cache = _get_page_cache(page_type);
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auto lru_handle = cache->insert(key.encode(), data, data->capacity(), deleter, priority);
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*handle = PageCacheHandle(cache, lru_handle);
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}
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void StoragePageCache::prune(segment_v2::PageTypePB page_type) {
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auto cache = _get_page_cache(page_type);
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cache->prune();
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}
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} // namespace doris
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