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Add support
/sys/devices/system/node/nodeN/meminfo
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,190 @@ | ||
| // 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 linux | ||
| // +build linux | ||
|
|
||
| package sysfs | ||
|
|
||
| import ( | ||
| "bufio" | ||
| "bytes" | ||
| "fmt" | ||
| "io" | ||
| "path/filepath" | ||
| "strconv" | ||
| "strings" | ||
|
|
||
| "github.com/prometheus/procfs/internal/util" | ||
| ) | ||
|
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| // Meminfo represents memory statistics for NUMA node | ||
| type Meminfo struct { | ||
| MemTotal uint64 | ||
| MemFree uint64 | ||
| MemUsed uint64 | ||
| SwapCached uint64 | ||
| Active uint64 | ||
| Inactive uint64 | ||
| ActiveAnon uint64 | ||
| InactiveAnon uint64 | ||
| ActiveFile uint64 | ||
| InactiveFile uint64 | ||
| Unevictable uint64 | ||
| Mlocked uint64 | ||
| Dirty uint64 | ||
| Writeback uint64 | ||
| FilePages uint64 | ||
| Mapped uint64 | ||
| AnonPages uint64 | ||
| Shmem uint64 | ||
| KernelStack uint64 | ||
| PageTables uint64 | ||
| NFS_Unstable uint64 | ||
| Bounce uint64 | ||
| WritebackTmp uint64 | ||
| KReclaimable uint64 | ||
| Slab uint64 | ||
| SReclaimable uint64 | ||
| SUnreclaim uint64 | ||
| AnonHugePages uint64 | ||
| ShmemHugePages uint64 | ||
| ShmemPmdMapped uint64 | ||
| FileHugePages uint64 | ||
| FilePmdMapped uint64 | ||
| HugePages_Total uint64 | ||
| HugePages_Free uint64 | ||
| HugePages_Surp uint64 | ||
| } | ||
|
|
||
| func (fs FS) MeminfoNUMA() (map[int]Meminfo, error) { | ||
| m := make(map[int]Meminfo) | ||
| 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 | ||
| } | ||
| b, err := util.ReadFileNoStat(filepath.Join(node, "meminfo")) | ||
| if err != nil { | ||
| return nil, err | ||
| } | ||
| meminfo, err := parseMeminfo(bytes.NewReader(b)) | ||
| if err != nil { | ||
| return nil, err | ||
| } | ||
| m[nodeNumber] = meminfo | ||
| } | ||
| return m, nil | ||
| } | ||
|
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| func parseMeminfo(r io.Reader) (Meminfo, error) { | ||
| var m Meminfo | ||
| s := bufio.NewScanner(r) | ||
| for s.Scan() { | ||
| // Each line has at least a name and value; we ignore the unit. | ||
| // A line example: "Node 0 MemTotal: 395936028 kB" | ||
| fields := strings.Fields(s.Text()) | ||
| if len(fields) < 4 { | ||
| return Meminfo{}, fmt.Errorf("malformed meminfo line: %q", s.Text()) | ||
| } | ||
|
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| v, err := strconv.ParseUint(fields[3], 0, 64) | ||
| if err != nil { | ||
| return Meminfo{}, err | ||
| } | ||
|
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| switch fields[2] { | ||
| case "MemTotal:": | ||
| m.MemTotal = v | ||
| case "MemFree:": | ||
| m.MemFree = v | ||
| case "MemUsed:": | ||
| m.MemUsed = v | ||
| case "SwapCached:": | ||
| m.SwapCached = v | ||
| case "Active:": | ||
| m.Active = v | ||
| case "Inactive:": | ||
| m.Inactive = v | ||
| case "Active(anon):": | ||
| m.ActiveAnon = v | ||
| case "Inactive(anon):": | ||
| m.InactiveAnon = v | ||
| case "Active(file):": | ||
| m.ActiveFile = v | ||
| case "Inactive(file):": | ||
| m.InactiveFile = v | ||
| case "Unevictable:": | ||
| m.Unevictable = v | ||
| case "Mlocked:": | ||
| m.Mlocked = v | ||
| case "Dirty:": | ||
| m.Dirty = v | ||
| case "Writeback:": | ||
| m.Writeback = v | ||
| case "FilePages:": | ||
| m.FilePages = v | ||
| case "Mapped:": | ||
| m.Mapped = v | ||
| case "AnonPages:": | ||
| m.AnonPages = v | ||
| case "Shmem:": | ||
| m.Shmem = v | ||
| case "KernelStack:": | ||
| m.KernelStack = v | ||
| case "PageTables:": | ||
| m.PageTables = v | ||
| case "NFS_Unstable:": | ||
| m.NFS_Unstable = v | ||
| case "Bounce:": | ||
| m.Bounce = v | ||
| case "WritebackTmp:": | ||
| m.WritebackTmp = v | ||
| case "KReclaimable:": | ||
| m.KReclaimable = v | ||
| case "Slab:": | ||
| m.Slab = v | ||
| case "SReclaimable:": | ||
| m.SReclaimable = v | ||
| case "SUnreclaim:": | ||
| m.SUnreclaim = v | ||
| case "AnonHugePages:": | ||
| m.AnonHugePages = v | ||
| case "ShmemHugePages:": | ||
| m.ShmemHugePages = v | ||
| case "ShmemPmdMapped:": | ||
| m.ShmemPmdMapped = v | ||
| case "FileHugePages:": | ||
| m.FileHugePages = v | ||
| case "FilePmdMapped:": | ||
| m.FilePmdMapped = v | ||
| case "HugePages_Total:": | ||
| m.HugePages_Total = v | ||
| case "HugePages_Free:": | ||
| m.HugePages_Free = v | ||
| case "HugePages_Surp:": | ||
| m.HugePages_Surp = v | ||
| } | ||
| } | ||
|
|
||
| return m, nil | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,41 @@ | ||
| // 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. | ||
|
|
||
| //go:build linux | ||
| // +build linux | ||
|
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| package sysfs | ||
|
|
||
| import ( | ||
| "testing" | ||
| ) | ||
|
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| func TestMeminfoNUMA(t *testing.T) { | ||
| fs, err := NewFS(sysTestFixtures) | ||
| if err != nil { | ||
| t.Fatal(err) | ||
| } | ||
|
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| meminfo, err := fs.MeminfoNUMA() | ||
| if err != nil { | ||
| t.Fatal(err) | ||
| } | ||
|
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| if want, got := uint64(133), meminfo[1].HugePages_Total; want != got { | ||
| t.Errorf("want meminfo stat HugePages_Total value %d, got %d", want, got) | ||
| } | ||
|
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| if want, got := uint64(134), meminfo[1].HugePages_Free; want != got { | ||
| t.Errorf("want meminfo stat HugePages_Free value %d, got %d", want, got) | ||
| } | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,24 @@ | ||
| // 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. | ||
|
|
||
| //go:build linux | ||
| // +build linux | ||
|
|
||
| package sysfs | ||
|
|
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| import "regexp" | ||
|
|
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| var ( | ||
| nodePattern = "devices/system/node/node[0-9]*" | ||
| nodeNumberRegexp = regexp.MustCompile(`.*devices/system/node/node([0-9]*)`) | ||
| ) |
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