mirror of
https://github.com/rocky-linux/peridot.git
synced 2024-11-05 06:21:24 +00:00
211 lines
7.7 KiB
Go
211 lines
7.7 KiB
Go
// Copyright 2019 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.
|
|
|
|
//go:build !windows
|
|
// +build !windows
|
|
|
|
package procfs
|
|
|
|
import (
|
|
"fmt"
|
|
"os"
|
|
"path/filepath"
|
|
"strings"
|
|
|
|
"github.com/prometheus/procfs/internal/util"
|
|
)
|
|
|
|
// The VM interface is described at
|
|
// https://www.kernel.org/doc/Documentation/sysctl/vm.txt
|
|
// Each setting is exposed as a single file.
|
|
// Each file contains one line with a single numerical value, except lowmem_reserve_ratio which holds an array
|
|
// and numa_zonelist_order (deprecated) which is a string.
|
|
type VM struct {
|
|
AdminReserveKbytes *int64 // /proc/sys/vm/admin_reserve_kbytes
|
|
BlockDump *int64 // /proc/sys/vm/block_dump
|
|
CompactUnevictableAllowed *int64 // /proc/sys/vm/compact_unevictable_allowed
|
|
DirtyBackgroundBytes *int64 // /proc/sys/vm/dirty_background_bytes
|
|
DirtyBackgroundRatio *int64 // /proc/sys/vm/dirty_background_ratio
|
|
DirtyBytes *int64 // /proc/sys/vm/dirty_bytes
|
|
DirtyExpireCentisecs *int64 // /proc/sys/vm/dirty_expire_centisecs
|
|
DirtyRatio *int64 // /proc/sys/vm/dirty_ratio
|
|
DirtytimeExpireSeconds *int64 // /proc/sys/vm/dirtytime_expire_seconds
|
|
DirtyWritebackCentisecs *int64 // /proc/sys/vm/dirty_writeback_centisecs
|
|
DropCaches *int64 // /proc/sys/vm/drop_caches
|
|
ExtfragThreshold *int64 // /proc/sys/vm/extfrag_threshold
|
|
HugetlbShmGroup *int64 // /proc/sys/vm/hugetlb_shm_group
|
|
LaptopMode *int64 // /proc/sys/vm/laptop_mode
|
|
LegacyVaLayout *int64 // /proc/sys/vm/legacy_va_layout
|
|
LowmemReserveRatio []*int64 // /proc/sys/vm/lowmem_reserve_ratio
|
|
MaxMapCount *int64 // /proc/sys/vm/max_map_count
|
|
MemoryFailureEarlyKill *int64 // /proc/sys/vm/memory_failure_early_kill
|
|
MemoryFailureRecovery *int64 // /proc/sys/vm/memory_failure_recovery
|
|
MinFreeKbytes *int64 // /proc/sys/vm/min_free_kbytes
|
|
MinSlabRatio *int64 // /proc/sys/vm/min_slab_ratio
|
|
MinUnmappedRatio *int64 // /proc/sys/vm/min_unmapped_ratio
|
|
MmapMinAddr *int64 // /proc/sys/vm/mmap_min_addr
|
|
NrHugepages *int64 // /proc/sys/vm/nr_hugepages
|
|
NrHugepagesMempolicy *int64 // /proc/sys/vm/nr_hugepages_mempolicy
|
|
NrOvercommitHugepages *int64 // /proc/sys/vm/nr_overcommit_hugepages
|
|
NumaStat *int64 // /proc/sys/vm/numa_stat
|
|
NumaZonelistOrder string // /proc/sys/vm/numa_zonelist_order
|
|
OomDumpTasks *int64 // /proc/sys/vm/oom_dump_tasks
|
|
OomKillAllocatingTask *int64 // /proc/sys/vm/oom_kill_allocating_task
|
|
OvercommitKbytes *int64 // /proc/sys/vm/overcommit_kbytes
|
|
OvercommitMemory *int64 // /proc/sys/vm/overcommit_memory
|
|
OvercommitRatio *int64 // /proc/sys/vm/overcommit_ratio
|
|
PageCluster *int64 // /proc/sys/vm/page-cluster
|
|
PanicOnOom *int64 // /proc/sys/vm/panic_on_oom
|
|
PercpuPagelistFraction *int64 // /proc/sys/vm/percpu_pagelist_fraction
|
|
StatInterval *int64 // /proc/sys/vm/stat_interval
|
|
Swappiness *int64 // /proc/sys/vm/swappiness
|
|
UserReserveKbytes *int64 // /proc/sys/vm/user_reserve_kbytes
|
|
VfsCachePressure *int64 // /proc/sys/vm/vfs_cache_pressure
|
|
WatermarkBoostFactor *int64 // /proc/sys/vm/watermark_boost_factor
|
|
WatermarkScaleFactor *int64 // /proc/sys/vm/watermark_scale_factor
|
|
ZoneReclaimMode *int64 // /proc/sys/vm/zone_reclaim_mode
|
|
}
|
|
|
|
// VM reads the VM statistics from the specified `proc` filesystem.
|
|
func (fs FS) VM() (*VM, error) {
|
|
path := fs.proc.Path("sys/vm")
|
|
file, err := os.Stat(path)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
if !file.Mode().IsDir() {
|
|
return nil, fmt.Errorf("%s is not a directory", path)
|
|
}
|
|
|
|
files, err := os.ReadDir(path)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
|
|
var vm VM
|
|
for _, f := range files {
|
|
if f.IsDir() {
|
|
continue
|
|
}
|
|
|
|
name := filepath.Join(path, f.Name())
|
|
// ignore errors on read, as there are some write only
|
|
// in /proc/sys/vm
|
|
value, err := util.SysReadFile(name)
|
|
if err != nil {
|
|
continue
|
|
}
|
|
vp := util.NewValueParser(value)
|
|
|
|
switch f.Name() {
|
|
case "admin_reserve_kbytes":
|
|
vm.AdminReserveKbytes = vp.PInt64()
|
|
case "block_dump":
|
|
vm.BlockDump = vp.PInt64()
|
|
case "compact_unevictable_allowed":
|
|
vm.CompactUnevictableAllowed = vp.PInt64()
|
|
case "dirty_background_bytes":
|
|
vm.DirtyBackgroundBytes = vp.PInt64()
|
|
case "dirty_background_ratio":
|
|
vm.DirtyBackgroundRatio = vp.PInt64()
|
|
case "dirty_bytes":
|
|
vm.DirtyBytes = vp.PInt64()
|
|
case "dirty_expire_centisecs":
|
|
vm.DirtyExpireCentisecs = vp.PInt64()
|
|
case "dirty_ratio":
|
|
vm.DirtyRatio = vp.PInt64()
|
|
case "dirtytime_expire_seconds":
|
|
vm.DirtytimeExpireSeconds = vp.PInt64()
|
|
case "dirty_writeback_centisecs":
|
|
vm.DirtyWritebackCentisecs = vp.PInt64()
|
|
case "drop_caches":
|
|
vm.DropCaches = vp.PInt64()
|
|
case "extfrag_threshold":
|
|
vm.ExtfragThreshold = vp.PInt64()
|
|
case "hugetlb_shm_group":
|
|
vm.HugetlbShmGroup = vp.PInt64()
|
|
case "laptop_mode":
|
|
vm.LaptopMode = vp.PInt64()
|
|
case "legacy_va_layout":
|
|
vm.LegacyVaLayout = vp.PInt64()
|
|
case "lowmem_reserve_ratio":
|
|
stringSlice := strings.Fields(value)
|
|
pint64Slice := make([]*int64, 0, len(stringSlice))
|
|
for _, value := range stringSlice {
|
|
vp := util.NewValueParser(value)
|
|
pint64Slice = append(pint64Slice, vp.PInt64())
|
|
}
|
|
vm.LowmemReserveRatio = pint64Slice
|
|
case "max_map_count":
|
|
vm.MaxMapCount = vp.PInt64()
|
|
case "memory_failure_early_kill":
|
|
vm.MemoryFailureEarlyKill = vp.PInt64()
|
|
case "memory_failure_recovery":
|
|
vm.MemoryFailureRecovery = vp.PInt64()
|
|
case "min_free_kbytes":
|
|
vm.MinFreeKbytes = vp.PInt64()
|
|
case "min_slab_ratio":
|
|
vm.MinSlabRatio = vp.PInt64()
|
|
case "min_unmapped_ratio":
|
|
vm.MinUnmappedRatio = vp.PInt64()
|
|
case "mmap_min_addr":
|
|
vm.MmapMinAddr = vp.PInt64()
|
|
case "nr_hugepages":
|
|
vm.NrHugepages = vp.PInt64()
|
|
case "nr_hugepages_mempolicy":
|
|
vm.NrHugepagesMempolicy = vp.PInt64()
|
|
case "nr_overcommit_hugepages":
|
|
vm.NrOvercommitHugepages = vp.PInt64()
|
|
case "numa_stat":
|
|
vm.NumaStat = vp.PInt64()
|
|
case "numa_zonelist_order":
|
|
vm.NumaZonelistOrder = value
|
|
case "oom_dump_tasks":
|
|
vm.OomDumpTasks = vp.PInt64()
|
|
case "oom_kill_allocating_task":
|
|
vm.OomKillAllocatingTask = vp.PInt64()
|
|
case "overcommit_kbytes":
|
|
vm.OvercommitKbytes = vp.PInt64()
|
|
case "overcommit_memory":
|
|
vm.OvercommitMemory = vp.PInt64()
|
|
case "overcommit_ratio":
|
|
vm.OvercommitRatio = vp.PInt64()
|
|
case "page-cluster":
|
|
vm.PageCluster = vp.PInt64()
|
|
case "panic_on_oom":
|
|
vm.PanicOnOom = vp.PInt64()
|
|
case "percpu_pagelist_fraction":
|
|
vm.PercpuPagelistFraction = vp.PInt64()
|
|
case "stat_interval":
|
|
vm.StatInterval = vp.PInt64()
|
|
case "swappiness":
|
|
vm.Swappiness = vp.PInt64()
|
|
case "user_reserve_kbytes":
|
|
vm.UserReserveKbytes = vp.PInt64()
|
|
case "vfs_cache_pressure":
|
|
vm.VfsCachePressure = vp.PInt64()
|
|
case "watermark_boost_factor":
|
|
vm.WatermarkBoostFactor = vp.PInt64()
|
|
case "watermark_scale_factor":
|
|
vm.WatermarkScaleFactor = vp.PInt64()
|
|
case "zone_reclaim_mode":
|
|
vm.ZoneReclaimMode = vp.PInt64()
|
|
}
|
|
if err := vp.Err(); err != nil {
|
|
return nil, err
|
|
}
|
|
}
|
|
|
|
return &vm, nil
|
|
}
|