Cisco Systems Cisco IOS XR manual Displaying System Memory Information

Chapter 7 Troubleshooting the Cisco IOS XR Software

Memory Warnings in Configuration Sessions

“ERROR! MEMORY IS IN SEVERE (or CRITICAL) STATE”

When the memory is in a severe or critical state, router operation and performance is likely to be affected. Regular users are not allowed to enter configuration mode. Only lr-root owners can enter configuration mode to free memory by removing configurations.

In some situations, the commit command is not allowed. Users with lr-root access can still use the commit force command to apply configurations that reduce memory usage. Reducing memory usage normally means removing configurations, but a user can also add configurations that reduce memory usage. For example, configuring the shutdown command on an interface could cause numerous routes to be purged from Border Gateway Protocol (BGP), the Routing Information Base (RIB), and Forwarding Information Base (FIB) configurations.

Caution The commit force command should be used only to apply configurations that reduce memory usage. Adding configurations that increase memory usage could result in serious loss of router operation.

Displaying System Memory Information

To display a high level summary of system memory, enter the show memory summary command. Table 7-1describes the meaning of each heading.

RP/0/RP0/CPU0:router# show memory summary

Physical Memory: 2048M total

Application Memory : 1787M (1509M available)

Image: 132M (bootram: 132M)

Reserved: 128M, IOMem: 0, flashfsys: 0

Total shared window: 0

RP/0/RP1/CPU0:router#

To display general memory usage for the device as a whole and by process, enter the show memory command. Table 7-1describes the meaning of each heading.

RP/0/RP0/CPU0:router# show memory

Physical Memory: 2048M total

Application Memory :		1787M (1510M available)
Image: 132M (bootram: 132M)
Reserved: 128M, IOMem: 0, flashfsys: 0
Total shared window:		0
kernel: jid 1
Address	Bytes		What
000d2000	12288		Program	Stack
00112000	12288		Program	Stack
Total Allocated Memory: 0
Total Shared Memory: 0
pkg/bin/wd-mbi: jid 72
Address	Bytes		What
4817f000	4096		Program	Stack (pages not allocated)
48180000	516096		Program	Stack (pages not allocated)
481fe000	8192		Program	Stack
48200000	8192		Program	Text
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	Cisco IOS XR Getting Started Guide
7-10	OL-10957-02