SNMPにて CPU 使用率をモニタリングする場合、CISCO-PROCESS-MIB の以下の OID にて CPU 使用率を取得することができます。
CISCO-PROCESS-MIB
- cpmCPUTotal1minRev (1.3.6.1.4.1.9.9.109.1.1.1.1.7)
cpmCPUTotal5minRev (1.3.6.1.4.1.9.9.109.1.1.1.1.8)
上記 cpmCPUTotal1minRev、cpmCPUTotal5minRev は CISCO-PROCESS-MIB に定義されており、
それぞれ過去 1 分間、5 分間の CPU 使用率となっています。
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cpmCPUTotal1minRev OBJECT-TYPE
SYNTAX Gauge32 (0..100)
UNITS "percent"
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The overall CPU busy percentage in the last 1 minute
period. This object deprecates the object cpmCPUTotal1min
and increases the value range to (0..100)."
::= { cpmCPUTotalEntry 7 }
cpmCPUTotal5minRev OBJECT-TYPE
SYNTAX Gauge32 (0..100)
UNITS "percent"
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The overall CPU busy percentage in the last 5 minute
period. This object deprecates the object cpmCPUTotal5min
and increases the value range to (0..100)."
::= { cpmCPUTotalEntry 8 }
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なお、show process cpu コマンドにて表示される過去 15 分間の CPU 使用率は
CISCO-PROCESS-MIB に定義されておらず未サポートとなります。
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RP/0/RP0/CPU0:CRS-MC#show processes cpu | exclude 0%.*0%.*0%
CPU utilization for one minute: 6%; five minutes: 6%; fifteen minutes: 6%
PID 1Min 5Min 15Min Process
28696 1% 1% 1% hd_drv
53280 1% 1% 1% eth_server
57379 2% 2% 2% qnet
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以下、CRS にて Net-SNMP を使って各 CPU の使用率を取得するサンプルとなります。
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# snmpwalk -v 2c -c private <A.B.C.D> cpmCPUTotalTable
CISCO-PROCESS-MIB::cpmCPUTotalPhysicalIndex.2 = INTEGER: 2359704
CISCO-PROCESS-MIB::cpmCPUTotalPhysicalIndex.18 = INTEGER: 10154515
CISCO-PROCESS-MIB::cpmCPUTotalPhysicalIndex.514 = INTEGER: 7858209
CISCO-PROCESS-MIB::cpmCPUTotalPhysicalIndex.4162 = INTEGER: 134949328
CISCO-PROCESS-MIB::cpmCPUTotalPhysicalIndex.4163 = INTEGER: 185280579
CISCO-PROCESS-MIB::cpmCPUTotalPhysicalIndex.4610 = INTEGER: 156036026
CISCO-PROCESS-MIB::cpmCPUTotalPhysicalIndex.4626 = INTEGER: 198577469
CISCO-PROCESS-MIB::cpmCPUTotalPhysicalIndex.983554 = INTEGER: 1508476423
CISCO-PROCESS-MIB::cpmCPUTotalPhysicalIndex.983570 = INTEGER: 1520228812
CISCO-PROCESS-MIB::cpmCPUTotal1minRev.2 = Gauge32: 2 percent
CISCO-PROCESS-MIB::cpmCPUTotal1minRev.18 = Gauge32: 2 percent
CISCO-PROCESS-MIB::cpmCPUTotal1minRev.514 = Gauge32: 6 percent
CISCO-PROCESS-MIB::cpmCPUTotal1minRev.4162 = Gauge32: 1 percent
CISCO-PROCESS-MIB::cpmCPUTotal1minRev.4163 = Gauge32: 1 percent
CISCO-PROCESS-MIB::cpmCPUTotal1minRev.4610 = Gauge32: 2 percent
CISCO-PROCESS-MIB::cpmCPUTotal1minRev.4626 = Gauge32: 1 percent
CISCO-PROCESS-MIB::cpmCPUTotal1minRev.983554 = Gauge32: 5 percent
CISCO-PROCESS-MIB::cpmCPUTotal1minRev.983570 = Gauge32: 4 percent
CISCO-PROCESS-MIB::cpmCPUTotal5minRev.2 = Gauge32: 2 percent
CISCO-PROCESS-MIB::cpmCPUTotal5minRev.18 = Gauge32: 2 percent
CISCO-PROCESS-MIB::cpmCPUTotal5minRev.514 = Gauge32: 6 percent
CISCO-PROCESS-MIB::cpmCPUTotal5minRev.4162 = Gauge32: 1 percent
CISCO-PROCESS-MIB::cpmCPUTotal5minRev.4163 = Gauge32: 1 percent
CISCO-PROCESS-MIB::cpmCPUTotal5minRev.4610 = Gauge32: 2 percent
CISCO-PROCESS-MIB::cpmCPUTotal5minRev.4626 = Gauge32: 1 percent
CISCO-PROCESS-MIB::cpmCPUTotal5minRev.983554 = Gauge32: 5 percent
CISCO-PROCESS-MIB::cpmCPUTotal5minRev.983570 = Gauge32: 4 percent
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上記 OID の index は cpmCPUTotalIndex であり各 CPU に割り当てられた任意の値となっています。
cpmCPUTotalIndex と各 CPU のマッピングは ENTITY-MIB の entPhysicalName から取得できます。
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# snmpwalk -v 2c -c private <A.B.C.D> entPhysicalName| egrep "(2359704|10154515|7858209|134949328|185280579|156036026|198577469|1508476423|1520228812)"
ENTITY-MIB::entPhysicalName.2359704 = STRING: 0/0/* - cpu
ENTITY-MIB::entPhysicalName.7858209 = STRING: 0/RP0/* - cpu
ENTITY-MIB::entPhysicalName.10154515 = STRING: 0/1/* - cpu
ENTITY-MIB::entPhysicalName.134949328 = STRING: 1/4/* - cpu0
ENTITY-MIB::entPhysicalName.156036026 = STRING: 1/RP0/* - cpu
ENTITY-MIB::entPhysicalName.185280579 = STRING: 1/4/* - cpu1
ENTITY-MIB::entPhysicalName.198577469 = STRING: 1/RP1/* - cpu
ENTITY-MIB::entPhysicalName.1508476423 = STRING: F0/SC0/* - cpu
ENTITY-MIB::entPhysicalName.1520228812 = STRING: F0/SC1/* - cpu
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上記結果をまとめた各 CPU の使用率一覧は以下となります。
| cpmCpuTotalIndex | cpmCPUTotalPhysicalIndex | entPhysicalName | cpmCPUTotal1minRev | cpmCPUTotal5minRev |
|---|
| 2 | 2359704 | 0/0/* - cpu | 2 (%)
| 2 (%)
|
| 18 | 10154515 | 0/1/* - cpu | 2 | 2 |
| 514 | 7858209 | 0/RP0/* - cpu
| 6 | 6 |
| 4162 | 134949328 | 1/4/* - cpu0 | 1 | 1 |
| 4163 | 185280579 | 1/RP0/* - cpu | 1 | 1 |
| 4610 | 156036026 | 1/4/* - cpu1 | 2 | 2 |
4626 | 198577469 | 1/RP1/* - cpu | 1 | 1 |
983554 | 1508476423 | F0/SC0/* - cpu | 5 | 5 |
983570 | 1520228812 | F0/SC1/* - cpu | 4 | 4 |
