| // Licensed to the Apache Software Foundation (ASF) under one |
| // or more contributor license agreements. See the NOTICE file |
| // distributed with this work for additional information |
| // regarding copyright ownership. The ASF licenses this file |
| // to you under the Apache License, Version 2.0 (the |
| // "License"); you may not use this file except in compliance |
| // with the License. You may obtain a copy of the License at |
| // |
| // http://www.apache.org/licenses/LICENSE-2.0 |
| // |
| // Unless required by applicable law or agreed to in writing, |
| // software distributed under the License is distributed on an |
| // "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY |
| // KIND, either express or implied. See the License for the |
| // specific language governing permissions and limitations |
| // under the License. |
| |
| #include "kudu/util/file_cache_metrics.h" |
| |
| #include "kudu/util/metrics.h" |
| |
| METRIC_DEFINE_counter(server, file_cache_inserts, |
| "File Cache Inserts", kudu::MetricUnit::kEntries, |
| "Number of file descriptors inserted in the cache", |
| kudu::MetricLevel::kDebug); |
| METRIC_DEFINE_counter(server, file_cache_lookups, |
| "File Cache Lookups", kudu::MetricUnit::kEntries, |
| "Number of file descriptors looked up from the cache", |
| kudu::MetricLevel::kDebug); |
| METRIC_DEFINE_counter(server, file_cache_evictions, |
| "File Cache Evictions", kudu::MetricUnit::kEntries, |
| "Number of file descriptors evicted from the cache", |
| kudu::MetricLevel::kDebug); |
| METRIC_DEFINE_counter(server, file_cache_misses, |
| "File Cache Misses", kudu::MetricUnit::kEntries, |
| "Number of lookups that didn't yield a file descriptor", |
| kudu::MetricLevel::kDebug); |
| METRIC_DEFINE_counter(server, file_cache_misses_caching, |
| "File Cache Misses (Caching)", kudu::MetricUnit::kEntries, |
| "Number of lookups that were expecting a file descriptor " |
| "that didn't yield one. Use this number instead of " |
| "cache_misses when trying to determine how " |
| "efficient the cache is", |
| kudu::MetricLevel::kDebug); |
| METRIC_DEFINE_counter(server, file_cache_hits, |
| "File Cache Hits", kudu::MetricUnit::kEntries, |
| "Number of lookups that found a file descriptor", |
| kudu::MetricLevel::kDebug); |
| METRIC_DEFINE_counter(server, file_cache_hits_caching, |
| "File Cache Hits (Caching)", kudu::MetricUnit::kEntries, |
| "Number of lookups that were expecting a file descriptor " |
| "that found one. Use this number instead of cache_hits " |
| "when trying to determine how efficient the cache is", |
| kudu::MetricLevel::kDebug); |
| |
| METRIC_DEFINE_gauge_uint64(server, file_cache_usage, "File Cache Usage", |
| kudu::MetricUnit::kEntries, |
| "Number of entries in the file cache", |
| kudu::MetricLevel::kInfo); |
| |
| namespace kudu { |
| |
| #define MINIT(member, x) member = METRIC_##x.Instantiate(entity) |
| #define GINIT(member, x) member = METRIC_##x.Instantiate(entity, 0) |
| FileCacheMetrics::FileCacheMetrics(const scoped_refptr<MetricEntity>& entity) { |
| MINIT(inserts, file_cache_inserts); |
| MINIT(lookups, file_cache_lookups); |
| MINIT(evictions, file_cache_evictions); |
| MINIT(cache_hits, file_cache_hits); |
| MINIT(cache_hits_caching, file_cache_hits_caching); |
| MINIT(cache_misses, file_cache_misses); |
| MINIT(cache_misses_caching, file_cache_misses_caching); |
| GINIT(cache_usage, file_cache_usage); |
| } |
| #undef MINIT |
| #undef GINIT |
| |
| } // namespace kudu |