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163 lines
4.6 KiB
163 lines
4.6 KiB
// Copyright 2017 The Prometheus Authors
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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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// Package xfs provides access to statistics exposed by the XFS filesystem.
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package xfs
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// Stats contains XFS filesystem runtime statistics, parsed from
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// /proc/fs/xfs/stat.
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//
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// The names and meanings of each statistic were taken from
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// http://xfs.org/index.php/Runtime_Stats and xfs_stats.h in the Linux
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// kernel source. Most counters are uint32s (same data types used in
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// xfs_stats.h), but some of the "extended precision stats" are uint64s.
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type Stats struct {
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// The name of the filesystem used to source these statistics.
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// If empty, this indicates aggregated statistics for all XFS
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// filesystems on the host.
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Name string
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ExtentAllocation ExtentAllocationStats
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AllocationBTree BTreeStats
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BlockMapping BlockMappingStats
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BlockMapBTree BTreeStats
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DirectoryOperation DirectoryOperationStats
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Transaction TransactionStats
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InodeOperation InodeOperationStats
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LogOperation LogOperationStats
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ReadWrite ReadWriteStats
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AttributeOperation AttributeOperationStats
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InodeClustering InodeClusteringStats
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Vnode VnodeStats
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Buffer BufferStats
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ExtendedPrecision ExtendedPrecisionStats
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}
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// ExtentAllocationStats contains statistics regarding XFS extent allocations.
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type ExtentAllocationStats struct {
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ExtentsAllocated uint32
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BlocksAllocated uint32
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ExtentsFreed uint32
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BlocksFreed uint32
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}
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// BTreeStats contains statistics regarding an XFS internal B-tree.
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type BTreeStats struct {
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Lookups uint32
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Compares uint32
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RecordsInserted uint32
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RecordsDeleted uint32
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}
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// BlockMappingStats contains statistics regarding XFS block maps.
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type BlockMappingStats struct {
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Reads uint32
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Writes uint32
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Unmaps uint32
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ExtentListInsertions uint32
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ExtentListDeletions uint32
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ExtentListLookups uint32
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ExtentListCompares uint32
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}
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// DirectoryOperationStats contains statistics regarding XFS directory entries.
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type DirectoryOperationStats struct {
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Lookups uint32
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Creates uint32
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Removes uint32
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Getdents uint32
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}
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// TransactionStats contains statistics regarding XFS metadata transactions.
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type TransactionStats struct {
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Sync uint32
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Async uint32
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Empty uint32
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}
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// InodeOperationStats contains statistics regarding XFS inode operations.
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type InodeOperationStats struct {
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Attempts uint32
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Found uint32
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Recycle uint32
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Missed uint32
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Duplicate uint32
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Reclaims uint32
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AttributeChange uint32
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}
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// LogOperationStats contains statistics regarding the XFS log buffer.
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type LogOperationStats struct {
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Writes uint32
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Blocks uint32
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NoInternalBuffers uint32
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Force uint32
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ForceSleep uint32
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}
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// ReadWriteStats contains statistics regarding the number of read and write
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// system calls for XFS filesystems.
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type ReadWriteStats struct {
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Read uint32
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Write uint32
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}
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// AttributeOperationStats contains statistics regarding manipulation of
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// XFS extended file attributes.
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type AttributeOperationStats struct {
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Get uint32
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Set uint32
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Remove uint32
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List uint32
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}
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// InodeClusteringStats contains statistics regarding XFS inode clustering
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// operations.
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type InodeClusteringStats struct {
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Iflush uint32
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Flush uint32
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FlushInode uint32
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}
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// VnodeStats contains statistics regarding XFS vnode operations.
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type VnodeStats struct {
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Active uint32
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Allocate uint32
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Get uint32
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Hold uint32
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Release uint32
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Reclaim uint32
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Remove uint32
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Free uint32
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}
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// BufferStats contains statistics regarding XFS read/write I/O buffers.
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type BufferStats struct {
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Get uint32
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Create uint32
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GetLocked uint32
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GetLockedWaited uint32
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BusyLocked uint32
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MissLocked uint32
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PageRetries uint32
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PageFound uint32
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GetRead uint32
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}
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// ExtendedPrecisionStats contains high precision counters used to track the
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// total number of bytes read, written, or flushed, during XFS operations.
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type ExtendedPrecisionStats struct {
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FlushBytes uint64
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WriteBytes uint64
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ReadBytes uint64
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}
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