Virtual Memory - Cisco MCS-7825-H3-IPC1 Service Manual

RTMT Monitoring of Cisco Unified CM System Health

Virtual Memory

Virtual memory consists of physical memory (RAM) and swap memory (Disk). The RTMT CPU and
Memory window has system level memory usage information as the following:
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Using SOAP APIs, you can query memory information for the following perfmon counters:
Note
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Using SNMP, you can query the following perfmon counters:
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You can download some historical information by using RTMT Trace Log Central. The Cisco AMC
Note
Service PerfMonLog is enabled by default. The Cisco AMC Service PerfMonLog is deprecated in Cisco
Unified CM Release 6.0 because Cisco RIS Data Collector PerfMonLog was introduced. The Cisco RIS
Data Collector PerfMonLog disabled by default in Cisco Unified CM Release 5.x and enabled by default
in Cisco Unified CM Release 6.0.
Note Perfmon Virtual Memory refers to Total (Physical + Swap) memory whereas Host Resource MIB Virtual
Memory refers to Swap memory only.
The RTMT Process window displays process level memory usage information as follows:
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Figure 3-5
can identify which process consumes more memory.
Cisco Unified Communications Manager Managed Services Guide
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Chapter 3
Total—Total amount of physical memory
Free—Amount of free memory
Shared—Amount of shared memory used
Buffers—Amount of memory used for buffering purpose
Cached—Amount of cached memory
Used—Calculated as Total – Free – Buffers – Cached + Shared
Total Swap—Total amount of swap space
Used Swap—Amount of swap space in use on the system.
Free Swap—Amount of free swap space available on the system
Under Memory object—% Mem Used, % VM Used, Total Kbytes, Total Swap Kbytes, Total VM
Kbytes, Used Kbytes, Used Swap Kbytes, Used VM Kbytes
Under Process object—VmSize, VmData, VmRSS, % Memory Usage
Host Resource MIB—hrStorageSize, hrStorageUsed, hrStorageAllocationUnits, hrStorageDescr,
hrStorageType, hrMemorySize
VmSize—Total virtual memory used by the process
VmRSS—Resident Set currently in physical memory used by the process including Code, Data and
Stack
VmData—Virtual memory usage of heap by the process
Page Fault Count—Represents the number of major page faults that a process encountered that
required the data to be loaded into physical memory
shows RTMT Process window. You can sort VmSize by clicking on VmSize tab. Then you
Managing and Monitoring the Health of Cisco Unified Communications Manager Systems
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