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Diffstat (limited to 'vendor/github.com/prometheus/procfs/bcache/bcache.go')
-rw-r--r-- | vendor/github.com/prometheus/procfs/bcache/bcache.go | 84 |
1 files changed, 84 insertions, 0 deletions
diff --git a/vendor/github.com/prometheus/procfs/bcache/bcache.go b/vendor/github.com/prometheus/procfs/bcache/bcache.go new file mode 100644 index 000000000..1db178cec --- /dev/null +++ b/vendor/github.com/prometheus/procfs/bcache/bcache.go @@ -0,0 +1,84 @@ +// Copyright 2017 The Prometheus Authors +// Licensed 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. + +// Package bcache provides access to statistics exposed by the bcache (Linux +// block cache). +package bcache + +// Stats contains bcache runtime statistics, parsed from /sys/fs/bcache/. +// +// The names and meanings of each statistic were taken from bcache.txt and +// files in drivers/md/bcache in the Linux kernel source. Counters are uint64 +// (in-kernel counters are mostly unsigned long). +type Stats struct { + // The name of the bcache used to source these statistics. + Name string + Bcache BcacheStats + Bdevs []BdevStats + Caches []CacheStats +} + +// BcacheStats contains statistics tied to a bcache ID. +type BcacheStats struct { + AverageKeySize uint64 + BtreeCacheSize uint64 + CacheAvailablePercent uint64 + Congested uint64 + RootUsagePercent uint64 + TreeDepth uint64 + Internal InternalStats + FiveMin PeriodStats + Total PeriodStats +} + +// BdevStats contains statistics for one backing device. +type BdevStats struct { + Name string + DirtyData uint64 + FiveMin PeriodStats + Total PeriodStats +} + +// CacheStats contains statistics for one cache device. +type CacheStats struct { + Name string + IOErrors uint64 + MetadataWritten uint64 + Written uint64 + Priority PriorityStats +} + +// PriorityStats contains statistics from the priority_stats file. +type PriorityStats struct { + UnusedPercent uint64 + MetadataPercent uint64 +} + +// InternalStats contains internal bcache statistics. +type InternalStats struct { + ActiveJournalEntries uint64 + BtreeNodes uint64 + BtreeReadAverageDurationNanoSeconds uint64 + CacheReadRaces uint64 +} + +// PeriodStats contains statistics for a time period (5 min or total). +type PeriodStats struct { + Bypassed uint64 + CacheBypassHits uint64 + CacheBypassMisses uint64 + CacheHits uint64 + CacheMissCollisions uint64 + CacheMisses uint64 + CacheReadaheads uint64 +} |