Removing Configurations To Resolve Low-Memory Warnings - Cisco Router IOS XR Getting Started Manual

Chapter 7 Troubleshooting the Cisco IOS XR Software
Table 7-2
Heading
Physical Memory
Application Memory
Image
Reserved
IOMem
flashfsys
Process and JID
Address
Bytes
What

Removing Configurations to Resolve Low-Memory Warnings

To resolve most low-memory problems, you should remove the configurations from the router that are
consuming the most memory. Often, memory problems occur when a large new configuration is added
to the system. The following sections provide information to resolve low-memory issues:
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Clearing a Target Configuration
A low-memory warning can occur when a large configuration file is loaded into a target configuration
session. To remove the target configuration, enter the clear command to discard the changes. For
example:
RP/0/RP0/CPU0:router(config)# clear
Committing a target configuration that has caused a low-memory warning can make the system unstable.
Caution
Clearing a target configuration is a preventive measure to not let the system go into a worse memory state
due to additional configuration. In addition, all other active configuration sessions can be closed to
minimize the churn.
Removing Committed Configurations to Free System Memory
You can reduce memory usage by removing configurations from the router, as shown in the following
procedure:
OL-10957-02
Heading Descriptions for show memory Command Output
Description
Amount of physical memory installed on the device.
Memory available for the system to use (total memory minus image size,
reserved, IOMem, and flashfsys).
Size of the bootable image.
Reserved for packet memory.
IO memory—Currently used as a backup for packet memory.
Flash file system memory.
Process and job ID.
Starting address in memory.
Size of memory block.
Block description.
Clearing a Target Configuration, page 7-11
Removing Committed Configurations to Free System Memory, page 7-11
Rolling Back to a Previously Committed Configuration, page 7-12
Clearing Configuration Sessions, page 7-12
Memory Warnings in Configuration Sessions
Cisco IOS XR Getting Started Guide
7-11