All MIBs › FREENAS-MIB › zfsArcCacheHitRatio
zfsArcCacheHitRatio
Module: FREENAS-MIB
OID (symbolic): FREENAS-MIB::zfsArcCacheHitRatio
OID (numeric): 1.3.6.1.4.1.50536.1.4.9
Node type: OBJECT-TYPE
Type: DisplayString
Access: read-only
Description: Arc Cache Hit Ration Percentage. (Note: Floating precision sent across SNMP as a String
What is zfsArcCacheHitRatio?
The ARC cache hit ratio as a percentage, sent as a string because SNMP has no native floating-point type; a healthy ZFS system typically shows a high hit ratio here.
Examples
Walk all instances (SNMPv2c):
snmpwalk -v2c -c public <target> 1.3.6.1.4.1.50536.1.4.9 snmpwalk -v2c -c public <target> FREENAS-MIB::zfsArcCacheHitRatio
Get a specific instance (index 1):
snmpget -v2c -c public <target> 1.3.6.1.4.1.50536.1.4.9.1 snmpget -v2c -c public <target> FREENAS-MIB::zfsArcCacheHitRatio.1
SNMPv3 example:
snmpget -v3 -l authPriv -u snmpv3-user -a SHA -A "AuthPassword1" -x AES -X "PrivPassword1" <target> zfsArcCacheHitRatio.1
Start monitoring FreeNAS/TrueNAS ZFS storage appliance/server with a free 30-day trial of IPNetwork Monitor. Create custom SNMP monitor using the FREENAS-MIB::zfsArcCacheHitRatio OID value, configure state conditions and alerts, and monitor any FreeNAS/TrueNAS ZFS storage appliance/server 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 |
|---|---|---|
| 1.3.6.1.4.1.50536 | freeNas | FREENAS-MIB |
| 1.3.6.1.4.1.50536.1 | zfs | FREENAS-MIB |
| 1.3.6.1.4.1.50536.1.4 | arc | FREENAS-MIB |
| 1.3.6.1.4.1.50536.1.4.9 | zfsArcCacheHitRatio | FREENAS-MIB |