All MIBs › UCD-SNMP-MIB › ssCpuRawSystem
ssCpuRawSystem
Module: UCD-SNMP-MIB
OID (symbolic): UCD-SNMP-MIB::ssCpuRawSystem
OID (numeric): 1.3.6.1.4.1.2021.11.52
Node type: OBJECT-TYPE
Type: Counter32
Access: read-only
Description: The number of 'ticks' (typically 1/100s) spent processing system-level code.
On a multi-processor system, the 'ssCpuRaw*' counters are cumulative over all CPUs, so their sum will typically be N*100 (for N processors).
This object may sometimes be implemented as the combination of the 'ssCpuRawWait(54)' and 'ssCpuRawKernel(55)' counters, so care must be taken when summing the overall raw counters.
What is ssCpuRawSystem?
This counter measures accumulated CPU 'ticks' (hundredths of a second) spent in kernel/system-level code across all CPU cores. On a 4-core system, the value increments 4x faster than on a single core due to cumulative counting. A monitoring tool would sample this periodically to calculate the percentage of time the system spends in kernel space versus user applications.
Examples
Walk all instances (SNMPv2c):
snmpwalk -v2c -c public <target> 1.3.6.1.4.1.2021.11.52 snmpwalk -v2c -c public <target> UCD-SNMP-MIB::ssCpuRawSystem
Get a specific instance (index 1):
snmpget -v2c -c public <target> 1.3.6.1.4.1.2021.11.52.1 snmpget -v2c -c public <target> UCD-SNMP-MIB::ssCpuRawSystem.1
Start monitoring Unix/Linux servers running the Net-SNMP (net-snmp/snmpd) agent (CPU/memory/disk/process-table status) with a free 30-day trial of IPNetwork Monitor. Create custom SNMP monitor using the UCD-SNMP-MIB::ssCpuRawSystem OID value, configure state conditions and alerts, and monitor any Unix/Linux servers running the Net-SNMP (net-snmp/snmpd) agent (CPU/memory/disk/process-table status) from a single console.
OID Breakdown
Upper-level ancestors (6 from the standard OID tree / other modules)
| Numeric OID | Name | Module |
|---|---|---|
| 1 | iso | LANART-AGENT |
| 1.3 | org | AirPair-MIB |
| 1.3.6 | dod | AirPair-MIB |
| 1.3.6.1 | internet | AirPair-MIB |
| 1.3.6.1.4 | private | AirPair-MIB |
| 1.3.6.1.4.1 | enterprises | AirPair-MIB |
| Numeric OID | Name | Module |
|---|---|---|
| 1.3.6.1.4.1.2021 | ucdavis | UCD-SNMP-MIB |
| 1.3.6.1.4.1.2021.11 | systemStats | UCD-SNMP-MIB |
| 1.3.6.1.4.1.2021.11.52 | ssCpuRawSystem | UCD-SNMP-MIB |