KERNEL-READER-SIMPLE-MIB2

All MIBs › KERNEL-READER-SIMPLE-MIB2

Organization: Sun Microsystems Inc.

Last Updated: 2006-09-20

Category: Domain: Network Management, Domain: Server Hardware, Vendor: Sun Microsystems

Description: Sun Microsystems Sun Management Center MIB providing simplified MIB-II kernel statistics reading for system performance monitoring.

Start monitoring vendor-neutral, standards-based MIB, any SNMPv3-capable network device (SNMP engine identity/boot/clock status) with a free 30-day trial of IPNetwork Monitor. Import MIBs, browse SNMP OIDs, create custom SNMP monitors, configure alerts, and monitor any SNMP-enabled network device from a single console.

What Is KERNEL-READER-SIMPLE-MIB2?

KERNEL-READER-SIMPLE-MIB2 is part of Sun Microsystems' Sun Management Center (SunMC) agent suite, providing a simplified read-out of Solaris kernel statistics analogous to classic "MIB-II" style system load and CPU accounting. It exposes system load averages and detailed per-CPU utilization breakdowns. This is squarely a software/hardware performance-monitoring MIB: it reports system load (avg1min, avg5min, avg15min) and, via cpuUtilTable, per-CPU-instance breakdowns of idle, user, kernel, and I/O-wait time, letting an administrator directly assess CPU load and health of a Solaris host. It is a Sun-proprietary companion to the standard MIB-II (RFC 1213) host resource conventions, reading kernel statistics that MIB-II itself does not expose at this granularity. Typical deployment is on Sun/Solaris servers running the Sun Management Center (sunsymon) monitoring agent for system performance monitoring in enterprise data centers, where KERNEL-READER-SIMPLE-MIB2 SNMP monitoring gives administrators a lightweight view of CPU load without needing full SunMC console access.

IPNetwork Monitor allows you to monitor SNMP objects defined in KERNEL-READER-SIMPLE-MIB2. Use the built-in SNMP Monitoring Browser to explore available variables, view their current values and descriptions, and select the objects you want to monitor. You can then create SNMP monitors, configure thresholds, and receive alerts when monitored values change.

Supported Devices

Sun Microsystems Solaris servers running Sun Management Center (SunMC) agent

Monitoring Examples

An administrator would poll avg1min, avg5min, and avg15min to track overall system load trends, then drill into cpuUtilTable (indexed by cpuinstance) to see per-CPU cpuuser, cpukernel, cpuidle, and waitio values. A CPU instance showing consistently low cpuidle combined with high waitio would indicate that CPU is bottlenecked on disk or I/O rather than compute, while a spike in cpukernel could point to excessive system-call or interrupt overhead. The cpudelta object provides the sampling interval used to compute these percentages.

What Can Be Monitored

1/5/15-minute load averages
per-CPU idle time
per-CPU user time
per-CPU kernel time
per-CPU I/O wait time

Imported Objects

From SNMPv2-SMI

Counter64
Integer32
MODULE-IDENTITY
Unsigned32
enterprises

OIDs

OID symbolic	OID numeric	Type	Access	Description
sun	1.3.6.1.4.1.42
prod	1.3.6.1.4.1.42.2
sunsymon	1.3.6.1.4.1.42.2.12
agent	1.3.6.1.4.1.42.2.12.2
modules	1.3.6.1.4.1.42.2.12.2.2
kernelReader	1.3.6.1.4.1.42.2.12.2.2.12
load	1.3.6.1.4.1.42.2.12.2.2.12.2
STR avg1min	1.3.6.1.4.1.42.2.12.2.2.12.2.1	DisplayString	read-only	Load average over the last 1 minute.
STR avg5min	1.3.6.1.4.1.42.2.12.2.2.12.2.2	DisplayString	read-only	Load average over the last 5 minutes.
STR avg15min	1.3.6.1.4.1.42.2.12.2.2.12.2.3	DisplayString	read-only	Load average over the last 15 minutes.
filesystem	1.3.6.1.4.1.42.2.12.2.2.12.4
ufsFileSystem	1.3.6.1.4.1.42.2.12.2.2.12.4.1
fileTable	1.3.6.1.4.1.42.2.12.2.2.12.4.1.1		not-accessible	MIB tree branch
fileEntry	1.3.6.1.4.1.42.2.12.2.2.12.4.1.1.1		not-accessible	MIB tree branch
STR index	1.3.6.1.4.1.42.2.12.2.2.12.4.1.1.1.1	DisplayString	read-only	The mount point index for the filesystem
STR mount	1.3.6.1.4.1.42.2.12.2.2.12.4.1.1.1.2	DisplayString	read-only	The mount point for the filesystem
STR diskname	1.3.6.1.4.1.42.2.12.2.2.12.4.1.1.1.3	DisplayString	read-only	The name of the device (/dev/dsk/...)
I32 ksize	1.3.6.1.4.1.42.2.12.2.2.12.4.1.1.1.4	Integer32	read-only	The total size of the filesystem in KBytes
I32 kfree	1.3.6.1.4.1.42.2.12.2.2.12.4.1.1.1.5	Integer32	read-only	Available disk space in KBytes
I32 kavail	1.3.6.1.4.1.42.2.12.2.2.12.4.1.1.1.6	Integer32	read-only	Available disk space for non-superusers in KBytes
STR kpctUsed	1.3.6.1.4.1.42.2.12.2.2.12.4.1.1.1.7	DisplayString	read-only	Percentage of Disk Space Used
I32 isize	1.3.6.1.4.1.42.2.12.2.2.12.4.1.1.1.8	Integer32	read-only	The total size of the filesystem in KBytes
I32 iavail	1.3.6.1.4.1.42.2.12.2.2.12.4.1.1.1.9	Integer32	read-only	Available disk space for the file system in KBytes
STR ipctUsed	1.3.6.1.4.1.42.2.12.2.2.12.4.1.1.1.10	DisplayString	read-only	Percentage of Inodes Used
ext3FileSystem	1.3.6.1.4.1.42.2.12.2.2.12.4.31
otherFileSystem	1.3.6.1.4.1.42.2.12.2.2.12.4.32
cpudetail	1.3.6.1.4.1.42.2.12.2.2.12.5
cpuUtilTable	1.3.6.1.4.1.42.2.12.2.2.12.5.1		not-accessible	MIB tree branch
cpuUtilEntry	1.3.6.1.4.1.42.2.12.2.2.12.5.1.1		not-accessible	MIB tree branch
I32 cpuinstance	1.3.6.1.4.1.42.2.12.2.2.12.5.1.1.1	Integer32	read-only	The CPU number
STR cpudelta	1.3.6.1.4.1.42.2.12.2.2.12.5.1.1.2	DisplayString	read-only	Floating point value
STR cpuidle	1.3.6.1.4.1.42.2.12.2.2.12.5.1.1.3	DisplayString	read-only	Floating point value
STR cpuuser	1.3.6.1.4.1.42.2.12.2.2.12.5.1.1.4	DisplayString	read-only	Floating point value
STR cpukernel	1.3.6.1.4.1.42.2.12.2.2.12.5.1.1.5	DisplayString	read-only	Floating point value
STR cpuwait	1.3.6.1.4.1.42.2.12.2.2.12.5.1.1.6	DisplayString	read-only	Floating point value
STR waitio	1.3.6.1.4.1.42.2.12.2.2.12.5.1.1.7	DisplayString	read-only	Floating point value
STR waitswap	1.3.6.1.4.1.42.2.12.2.2.12.5.1.1.8	DisplayString	read-only	Floating point value
STR waitpio	1.3.6.1.4.1.42.2.12.2.2.12.5.1.1.9	DisplayString	read-only	Floating point value
C64 idlethread	1.3.6.1.4.1.42.2.12.2.2.12.5.1.1.10	Counter64	read-only	Counter64 value
STR rknrd403	1.3.6.1.4.1.42.2.12.2.2.12.5.1.1.11	DisplayString	read-only	Meta CPU Rule
overAllCpuStatistics	1.3.6.1.4.1.42.2.12.2.2.12.5.10
STR overAllCpuStatsUtil	1.3.6.1.4.1.42.2.12.2.2.12.5.10.1	DisplayString	read-only	Floating point value
STR overAllCpuStatsIdle	1.3.6.1.4.1.42.2.12.2.2.12.5.10.2	DisplayString	read-only	Floating point value
memoryusage	1.3.6.1.4.1.42.2.12.2.2.12.6
I32 memavail	1.3.6.1.4.1.42.2.12.2.2.12.6.1	Integer32	read-only	Physical memory available
I32 meminuse	1.3.6.1.4.1.42.2.12.2.2.12.6.2	Integer32	read-only	Physical memory in use
STR memPctUsed	1.3.6.1.4.1.42.2.12.2.2.12.6.3	DisplayString	read-only	Percentage value
I32 memfree	1.3.6.1.4.1.42.2.12.2.2.12.6.4	Integer32	read-only	Physical memory free
STR pctFree	1.3.6.1.4.1.42.2.12.2.2.12.6.5	DisplayString	read-only	Percentage value
swapdetail	1.3.6.1.4.1.42.2.12.2.2.12.7
I32 swapavail	1.3.6.1.4.1.42.2.12.2.2.12.7.1	Integer32	read-only	Swap available(Total SWAP - RESERVED)
I32 swapresv	1.3.6.1.4.1.42.2.12.2.2.12.7.2	Integer32	read-only	Swap reserved
I32 swapalloc	1.3.6.1.4.1.42.2.12.2.2.12.7.3	Integer32	read-only	Swap allocated
U32 swapused	1.3.6.1.4.1.42.2.12.2.2.12.7.4	Unsigned32	read-only	Swap Used
I32 swaptotal	1.3.6.1.4.1.42.2.12.2.2.12.7.5	Integer32	read-only	Swap total
STR swapPctUsed	1.3.6.1.4.1.42.2.12.2.2.12.7.6	DisplayString	read-only	Percentage value
STR rknrd405	1.3.6.1.4.1.42.2.12.2.2.12.7.7	DisplayString	read-only	Meta Swap Rule

RFC description

Sun Microsystems kernel and system load monitoring MIB providing CPU load averages.

Start monitoring Sun Microsystems Solaris server running Sun Management Center (SunMC) agent with a free 30-day trial of IPNetwork Monitor. Import MIBs, browse SNMP OIDs, create custom SNMP monitors, configure alerts, and monitor any SNMP-enabled network device from a single console.

Download KERNEL-READER-SIMPLE-MIB2

What Is KERNEL-READER-SIMPLE-MIB2?

Supported Devices

Monitoring Examples

What Can Be Monitored

This MIB depends on

Related MIBs

RFC description