| // 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. |
| |
| // +build !windows |
| |
| package procfs |
| |
| import ( |
| "bytes" |
| "fmt" |
| "io/ioutil" |
| "regexp" |
| "strings" |
| |
| "github.com/prometheus/procfs/internal/util" |
| ) |
| |
| // Zoneinfo holds info parsed from /proc/zoneinfo. |
| type Zoneinfo struct { |
| Node string |
| Zone string |
| NrFreePages *int64 |
| Min *int64 |
| Low *int64 |
| High *int64 |
| Scanned *int64 |
| Spanned *int64 |
| Present *int64 |
| Managed *int64 |
| NrActiveAnon *int64 |
| NrInactiveAnon *int64 |
| NrIsolatedAnon *int64 |
| NrAnonPages *int64 |
| NrAnonTransparentHugepages *int64 |
| NrActiveFile *int64 |
| NrInactiveFile *int64 |
| NrIsolatedFile *int64 |
| NrFilePages *int64 |
| NrSlabReclaimable *int64 |
| NrSlabUnreclaimable *int64 |
| NrMlockStack *int64 |
| NrKernelStack *int64 |
| NrMapped *int64 |
| NrDirty *int64 |
| NrWriteback *int64 |
| NrUnevictable *int64 |
| NrShmem *int64 |
| NrDirtied *int64 |
| NrWritten *int64 |
| NumaHit *int64 |
| NumaMiss *int64 |
| NumaForeign *int64 |
| NumaInterleave *int64 |
| NumaLocal *int64 |
| NumaOther *int64 |
| Protection []*int64 |
| } |
| |
| var nodeZoneRE = regexp.MustCompile(`(\d+), zone\s+(\w+)`) |
| |
| // Zoneinfo parses an zoneinfo-file (/proc/zoneinfo) and returns a slice of |
| // structs containing the relevant info. More information available here: |
| // https://www.kernel.org/doc/Documentation/sysctl/vm.txt |
| func (fs FS) Zoneinfo() ([]Zoneinfo, error) { |
| data, err := ioutil.ReadFile(fs.proc.Path("zoneinfo")) |
| if err != nil { |
| return nil, fmt.Errorf("error reading zoneinfo %q: %w", fs.proc.Path("zoneinfo"), err) |
| } |
| zoneinfo, err := parseZoneinfo(data) |
| if err != nil { |
| return nil, fmt.Errorf("error parsing zoneinfo %q: %w", fs.proc.Path("zoneinfo"), err) |
| } |
| return zoneinfo, nil |
| } |
| |
| func parseZoneinfo(zoneinfoData []byte) ([]Zoneinfo, error) { |
| |
| zoneinfo := []Zoneinfo{} |
| |
| zoneinfoBlocks := bytes.Split(zoneinfoData, []byte("\nNode")) |
| for _, block := range zoneinfoBlocks { |
| var zoneinfoElement Zoneinfo |
| lines := strings.Split(string(block), "\n") |
| for _, line := range lines { |
| |
| if nodeZone := nodeZoneRE.FindStringSubmatch(line); nodeZone != nil { |
| zoneinfoElement.Node = nodeZone[1] |
| zoneinfoElement.Zone = nodeZone[2] |
| continue |
| } |
| if strings.HasPrefix(strings.TrimSpace(line), "per-node stats") { |
| zoneinfoElement.Zone = "" |
| continue |
| } |
| parts := strings.Fields(strings.TrimSpace(line)) |
| if len(parts) < 2 { |
| continue |
| } |
| vp := util.NewValueParser(parts[1]) |
| switch parts[0] { |
| case "nr_free_pages": |
| zoneinfoElement.NrFreePages = vp.PInt64() |
| case "min": |
| zoneinfoElement.Min = vp.PInt64() |
| case "low": |
| zoneinfoElement.Low = vp.PInt64() |
| case "high": |
| zoneinfoElement.High = vp.PInt64() |
| case "scanned": |
| zoneinfoElement.Scanned = vp.PInt64() |
| case "spanned": |
| zoneinfoElement.Spanned = vp.PInt64() |
| case "present": |
| zoneinfoElement.Present = vp.PInt64() |
| case "managed": |
| zoneinfoElement.Managed = vp.PInt64() |
| case "nr_active_anon": |
| zoneinfoElement.NrActiveAnon = vp.PInt64() |
| case "nr_inactive_anon": |
| zoneinfoElement.NrInactiveAnon = vp.PInt64() |
| case "nr_isolated_anon": |
| zoneinfoElement.NrIsolatedAnon = vp.PInt64() |
| case "nr_anon_pages": |
| zoneinfoElement.NrAnonPages = vp.PInt64() |
| case "nr_anon_transparent_hugepages": |
| zoneinfoElement.NrAnonTransparentHugepages = vp.PInt64() |
| case "nr_active_file": |
| zoneinfoElement.NrActiveFile = vp.PInt64() |
| case "nr_inactive_file": |
| zoneinfoElement.NrInactiveFile = vp.PInt64() |
| case "nr_isolated_file": |
| zoneinfoElement.NrIsolatedFile = vp.PInt64() |
| case "nr_file_pages": |
| zoneinfoElement.NrFilePages = vp.PInt64() |
| case "nr_slab_reclaimable": |
| zoneinfoElement.NrSlabReclaimable = vp.PInt64() |
| case "nr_slab_unreclaimable": |
| zoneinfoElement.NrSlabUnreclaimable = vp.PInt64() |
| case "nr_mlock_stack": |
| zoneinfoElement.NrMlockStack = vp.PInt64() |
| case "nr_kernel_stack": |
| zoneinfoElement.NrKernelStack = vp.PInt64() |
| case "nr_mapped": |
| zoneinfoElement.NrMapped = vp.PInt64() |
| case "nr_dirty": |
| zoneinfoElement.NrDirty = vp.PInt64() |
| case "nr_writeback": |
| zoneinfoElement.NrWriteback = vp.PInt64() |
| case "nr_unevictable": |
| zoneinfoElement.NrUnevictable = vp.PInt64() |
| case "nr_shmem": |
| zoneinfoElement.NrShmem = vp.PInt64() |
| case "nr_dirtied": |
| zoneinfoElement.NrDirtied = vp.PInt64() |
| case "nr_written": |
| zoneinfoElement.NrWritten = vp.PInt64() |
| case "numa_hit": |
| zoneinfoElement.NumaHit = vp.PInt64() |
| case "numa_miss": |
| zoneinfoElement.NumaMiss = vp.PInt64() |
| case "numa_foreign": |
| zoneinfoElement.NumaForeign = vp.PInt64() |
| case "numa_interleave": |
| zoneinfoElement.NumaInterleave = vp.PInt64() |
| case "numa_local": |
| zoneinfoElement.NumaLocal = vp.PInt64() |
| case "numa_other": |
| zoneinfoElement.NumaOther = vp.PInt64() |
| case "protection:": |
| protectionParts := strings.Split(line, ":") |
| protectionValues := strings.Replace(protectionParts[1], "(", "", 1) |
| protectionValues = strings.Replace(protectionValues, ")", "", 1) |
| protectionValues = strings.TrimSpace(protectionValues) |
| protectionStringMap := strings.Split(protectionValues, ", ") |
| val, err := util.ParsePInt64s(protectionStringMap) |
| if err == nil { |
| zoneinfoElement.Protection = val |
| } |
| } |
| |
| } |
| |
| zoneinfo = append(zoneinfo, zoneinfoElement) |
| } |
| return zoneinfo, nil |
| } |