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// Copyright 2020 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 linux
// +build linux
package sysfs
import (
"bufio"
"bytes"
"fmt"
"path/filepath"
"regexp"
"strconv"
"strings"
"github.com/prometheus/procfs/internal/util"
)
var (
nodePattern = "devices/system/node/node[0-9]*"
nodeNumberRegexp = regexp.MustCompile(`.*devices/system/node/node([0-9]*)`)
)
type VMStat struct {
NrFreePages uint64
NrZoneInactiveAnon uint64
NrZoneActiveAnon uint64
NrZoneInactiveFile uint64
NrZoneActiveFile uint64
NrZoneUnevictable uint64
NrZoneWritePending uint64
NrMlock uint64
NrPageTablePages uint64
NrKernelStack uint64
NrBounce uint64
NrZspages uint64
NrFreeCma uint64
NumaHit uint64
NumaMiss uint64
NumaForeign uint64
NumaInterleave uint64
NumaLocal uint64
NumaOther uint64
NrInactiveAnon uint64
NrActiveAnon uint64
NrInactiveFile uint64
NrActiveFile uint64
NrUnevictable uint64
NrSlabReclaimable uint64
NrSlabUnreclaimable uint64
NrIsolatedAnon uint64
NrIsolatedFile uint64
WorkingsetNodes uint64
WorkingsetRefault uint64
WorkingsetActivate uint64
WorkingsetRestore uint64
WorkingsetNodereclaim uint64
NrAnonPages uint64
NrMapped uint64
NrFilePages uint64
NrDirty uint64
NrWriteback uint64
NrWritebackTemp uint64
NrShmem uint64
NrShmemHugepages uint64
NrShmemPmdmapped uint64
NrFileHugepages uint64
NrFilePmdmapped uint64
NrAnonTransparentHugepages uint64
NrVmscanWrite uint64
NrVmscanImmediateReclaim uint64
NrDirtied uint64
NrWritten uint64
NrKernelMiscReclaimable uint64
NrFollPinAcquired uint64
NrFollPinReleased uint64
}
func (fs FS) VMStatNUMA() (map[int]VMStat, error) {
m := make(map[int]VMStat)
nodes, err := filepath.Glob(fs.sys.Path(nodePattern))
if err != nil {
return nil, err
}
for _, node := range nodes {
nodeNumbers := nodeNumberRegexp.FindStringSubmatch(node)
if len(nodeNumbers) != 2 {
continue
}
nodeNumber, err := strconv.Atoi(nodeNumbers[1])
if err != nil {
return nil, err
}
file, err := util.ReadFileNoStat(filepath.Join(node, "vmstat"))
if err != nil {
return nil, err
}
nodeStats, err := parseVMStatNUMA(file)
if err != nil {
return nil, err
}
m[nodeNumber] = nodeStats
}
return m, nil
}
func parseVMStatNUMA(r []byte) (VMStat, error) {
var (
vmStat = VMStat{}
scanner = bufio.NewScanner(bytes.NewReader(r))
)
for scanner.Scan() {
line := strings.TrimSpace(scanner.Text())
if line == "" {
continue
}
parts := strings.Fields(line)
if len(parts) != 2 {
return vmStat, fmt.Errorf("line scan did not return 2 fields: %s", line)
}
fv, err := strconv.ParseUint(parts[1], 10, 64)
if err != nil {
return vmStat, fmt.Errorf("invalid value in vmstat: %w", err)
}
switch parts[0] {
case "nr_free_pages":
vmStat.NrFreePages = fv
case "nr_zone_inactive_anon":
vmStat.NrZoneInactiveAnon = fv
case "nr_zone_active_anon":
vmStat.NrZoneActiveAnon = fv
case "nr_zone_inactive_file":
vmStat.NrZoneInactiveFile = fv
case "nr_zone_active_file":
vmStat.NrZoneActiveFile = fv
case "nr_zone_unevictable":
vmStat.NrZoneUnevictable = fv
case "nr_zone_write_pending":
vmStat.NrZoneWritePending = fv
case "nr_mlock":
vmStat.NrMlock = fv
case "nr_page_table_pages":
vmStat.NrPageTablePages = fv
case "nr_kernel_stack":
vmStat.NrKernelStack = fv
case "nr_bounce":
vmStat.NrBounce = fv
case "nr_zspages":
vmStat.NrZspages = fv
case "nr_free_cma":
vmStat.NrFreeCma = fv
case "numa_hit":
vmStat.NumaHit = fv
case "numa_miss":
vmStat.NumaMiss = fv
case "numa_foreign":
vmStat.NumaForeign = fv
case "numa_interleave":
vmStat.NumaInterleave = fv
case "numa_local":
vmStat.NumaLocal = fv
case "numa_other":
vmStat.NumaOther = fv
case "nr_inactive_anon":
vmStat.NrInactiveAnon = fv
case "nr_active_anon":
vmStat.NrActiveAnon = fv
case "nr_inactive_file":
vmStat.NrInactiveFile = fv
case "nr_active_file":
vmStat.NrActiveFile = fv
case "nr_unevictable":
vmStat.NrUnevictable = fv
case "nr_slab_reclaimable":
vmStat.NrSlabReclaimable = fv
case "nr_slab_unreclaimable":
vmStat.NrSlabUnreclaimable = fv
case "nr_isolated_anon":
vmStat.NrIsolatedAnon = fv
case "nr_isolated_file":
vmStat.NrIsolatedFile = fv
case "workingset_nodes":
vmStat.WorkingsetNodes = fv
case "workingset_refault":
vmStat.WorkingsetRefault = fv
case "workingset_activate":
vmStat.WorkingsetActivate = fv
case "workingset_restore":
vmStat.WorkingsetRestore = fv
case "workingset_nodereclaim":
vmStat.WorkingsetNodereclaim = fv
case "nr_anon_pages":
vmStat.NrAnonPages = fv
case "nr_mapped":
vmStat.NrMapped = fv
case "nr_file_pages":
vmStat.NrFilePages = fv
case "nr_dirty":
vmStat.NrDirty = fv
case "nr_writeback":
vmStat.NrWriteback = fv
case "nr_writeback_temp":
vmStat.NrWritebackTemp = fv
case "nr_shmem":
vmStat.NrShmem = fv
case "nr_shmem_hugepages":
vmStat.NrShmemHugepages = fv
case "nr_shmem_pmdmapped":
vmStat.NrShmemPmdmapped = fv
case "nr_file_hugepages":
vmStat.NrFileHugepages = fv
case "nr_file_pmdmapped":
vmStat.NrFilePmdmapped = fv
case "nr_anon_transparent_hugepages":
vmStat.NrAnonTransparentHugepages = fv
case "nr_vmscan_write":
vmStat.NrVmscanWrite = fv
case "nr_vmscan_immediate_reclaim":
vmStat.NrVmscanImmediateReclaim = fv
case "nr_dirtied":
vmStat.NrDirtied = fv
case "nr_written":
vmStat.NrWritten = fv
case "nr_kernel_misc_reclaimable":
vmStat.NrKernelMiscReclaimable = fv
case "nr_foll_pin_acquired":
vmStat.NrFollPinAcquired = fv
case "nr_foll_pin_released":
vmStat.NrFollPinReleased = fv
}
}
return vmStat, scanner.Err()
}
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