show system memory
Syntax
show system memory
Syntax (EX Series Switches)
show system memory <all-members> <local> <member member-id>
Syntax (MX Series Routers)
show system memory <all-members> <local> <member member-id>
Syntax (QFX Series)
show system memory <infrastructure name> <interconnect-device name> <node-group name>
Syntax (Junos OS Evolved)
show system memory <node name>
Description
Display system-wide memory distribution and usage including the Junos kernel,
software processes, and memory disks. Use the show system memory
command for troubleshooting with Juniper Networks Customer Support.
Options
| none |
Display the system memory distribution and usage information. |
| all-members |
(EX4200 switches and MX Series routers only) (Optional) Display system memory distribution and usage information for all members of the Virtual Chassis configuration. |
| infrastructure name |
(QFabric switches only) (Optional) Display system memory distribution and usage information for the fabric control Routing Engine and fabric manager Routing Engine. |
| interconnect-device name |
(QFabric switches only) (Optional) Display system memory distribution and usage information for the Interconnect device. |
| local |
(EX4200 switches and MX Series routers only) (Optional) Display system memory distribution and usage information for the local Virtual Chassis member. |
| member member-id |
(EX4200 switches and MX Series routers only) (Optional) Display system
memory distribution and usage information for the specified member of
the Virtual Chassis configuration. For EX4200 switches, replace
|
| node name | (Junos OS Evolved) (Optional) Display system memory distribution and usage information for the specified node. |
| node-group name |
(QFabric switches only) (Optional) Display system memory distribution and usage information for the Node group. |
Required Privilege Level
view
Output Fields
Table 1 lists the output
fields for the show system memory command. Output fields are listed
in the approximate order in which they appear.
|
Field Name |
Field Description |
|---|---|
|
|
Amount of memory used by the system, represented in kilobytes and as a percentage of the total memory.
|
| Buffer memory | Amount of memory used as buffers. |
| Swap memory | Amount of virtual memory that is swapped out to a block disk. |
|
|
Memory used by the memory disks, but not accounted for in the kernel map. For example, swap-based memory disk. |
|
|
Virtual memory used as per all virtual mappings in the kernel or process map and percentage thereof based on maximum addressable virtual memory as per any kernel, system, architecture, or resource limits. |
|
|
Real memory used as per actual resident pages of all mappings in the kernel or process map and percentage thereof based on the total real memory available in the system. |
|
|
Name of the map. |
|
|
Process ID. |
|
|
Name of the process. (MX Series routers
only) When you display the memory usage for an MX Series Virtual
Chassis, the |
| Available memory |
Estimate of how much memory is available for starting new applications without swapping memory. This estimate takes into account that the system needs some page cache to function well. Not all reclaimable slab is reclaimable because certain items are being used. |
Sample Output
- show system memory
- show system memory | display xml (QFX Series)
- show system memory (Junos OS Evolved)
- show system memory (Junos OS Evolved)
- show system memory | display xml (Junos OS Evolved)
show system memory
user@host> show system memory
System memory usage distribution:
Total memory: 1035552 Kbytes (100%)
Reserved memory: 18684 Kbytes ( 1%)
Wired memory: 526072 Kbytes ( 50%)
Active memory: 154792 Kbytes ( 14%)
Inactive memory: 64664 Kbytes ( 6%)
Cache memory: 69840 Kbytes ( 6%)
Free memory: 200688 Kbytes ( 19%)
Memory disk resident memory: 19016 Kbytes
VM-Kbytes( % ) Resident( % ) Map-name
570580(54.36) 92704(08.95) kernel
Pid VM-Kbytes( % ) Resident( % ) Process-name
1451 4756(00.15) 1000(00.09) /sbin/pmap
1411 727012(23.14) 18008(01.73) mgd: (mgd) (root)/dev/ttyd0
---(more)---show system memory | display xml (QFX Series)
user@switch> show system-memory | display xml
<rpc-reply xmlns:junos="http://xml.juniper.net/junos/12.1I0/junos">
<system-memory-information>
<system-memory-summary-information>
<system-memory-total>3391488</system-memory-total>
<system-memory-total-percent>100%</system-memory-total-percent>
<system-memory-reserved>1619892</system-memory-reserved>
<system-memory-reserved-percent> 47%</system-memory-reserved-percent>
<system-memory-wired>1592936</system-memory-wired>
<system-memory-wired-percent> 46%</system-memory-wired-percent>
<system-memory-active> 177736</system-memory-active>
<system-memory-active-percent> 5%</system-memory-active-percent>
<system-memory-inactive> 60480</system-memory-inactive>
<system-memory-inactive-percent> 1%</system-memory-inactive-percent>
<system-memory-cache> 39240</system-memory-cache>
<system-memory-cache-percent> 1%</system-memory-cache-percent>
<system-memory-free>1244628</system-memory-free>
<system-memory-free-percent> 36%</system-memory-free-percent>
</system-memory-summary-information>
<memory-disk-resident-information>
<resident-memory> 16424</resident-memory>
</memory-disk-resident-information>
<output>
pmap: unable to load pmap_helper module: No such file or directory
</output>
<output>
pmap: unable to load pmap_helper module: No such file or directory
</output>
</system-memory-information>
<cli>
<banner></banner>
</cli>
</rpc-reply>show system memory (Junos OS Evolved)
user@host> show system memory
fpc1:
--------------------------------------------------------------------------
System memory usage distribution:
Total memory: 16125892 Kbytes (100%)
Active memory: 2447108 Kbytes (15%)
Inactive memory: 2099532 Kbytes (13%)
Free memory: 9329768 Kbytes (57%)
Pid VM-Kbytes( % ) Resident( % ) Process-name
1 159116( 0) 8408( 0) /lib/systemd/systemd
2 0( 0) 0( 0) [kthreadd]
3 0( 0) 0( 0) [rcu_gp]
...
re0:
--------------------------------------------------------------------------
System memory usage distribution:
Total memory: 16125576 Kbytes (100%)
Active memory: 4935984 Kbytes (30%)
Inactive memory: 8935956 Kbytes (55%)
Free memory: 178448 Kbytes (1%)
Pid VM-Kbytes( % ) Resident( % ) Process-name
1 162220( 0) 10780( 0) /sbin/init
2 0( 0) 0( 0) [kthreadd]
3 0( 0) 0( 0) [rcu_gp]
...
re1:
--------------------------------------------------------------------------
System memory usage distribution:
Total memory: 16125560 Kbytes (100%)
Active memory: 3834540 Kbytes (23%)
Inactive memory: 5579724 Kbytes (34%)
Free memory: 5500228 Kbytes (34%)
Pid VM-Kbytes( % ) Resident( % ) Process-name
1 160928( 0) 9860( 0) /sbin/init
2 0( 0) 0( 0) [kthreadd]
3 0( 0) 0( 0) [rcu_gp]
...Starting in Junos OS Evolved Release 23.1R1, the Buffer memory,
Swap memory, and Available memory fields have
been added to the show system memory command.
show system memory (Junos OS Evolved)
user@host> show system memory Total memory: 16062004 Kbytes (100%) Active memory: 3152044 Kbytes (13%) Inactive memory: 4751112 Kbytes (61%) Free memory: 6602668 Kbytes (41%) Buffer memory: 370760 Kbytes (2%) Swap memory: 6045820 Kbytes (38%) Available memory: 12610560 Kbytes (79%) Cached memory: 5694904 Kbytes (36%)
show system memory | display xml (Junos OS Evolved)
user@host> show system memory | display xml
<rpc-reply xmlns:junos="http://xml.juniper.net/junos/22.1R0/junos">
<multi-routing-engine-results>
<multi-routing-engine-item>
<re-name>fpc1</re-name>
<system-memory-information>
<system-memory-summary-information>
<system-memory-total>16125892</system-memory-total>
<system-memory-total-percent>100%</system-memory-total-percent>
<system-memory-used>3885112</system-memory-used>
<system-memory-used-percent>24%</system-memory-used-percent>
<system-memory-active>2447796</system-memory-active>
<system-memory-active-percent>15%</system-memory-active-percent>
<system-memory-inactive>2101128</system-memory-inactive>
<system-memory-inactive-percent>13%</system-memory-inactive-percent>
<system-memory-free>9327316</system-memory-free>
<system-memory-free-percent>57%</system-memory-free-percent>
<system-memory-buffer>314516</system-memory-buffer>
<system-memory-buffer-percent>1%</system-memory-buffer-percent>
<system-memory-swap>2598948</system-memory-swap>
<system-memory-swap-percent>16%</system-memory-swap-percent>
</system-memory-summary-information>
<pmap-terse-information xmlns="http://xml.juniper.net/fbsd10/14.2I0/junos-pmap">
<pmap-terse-summary junos:style="pmap-process-terse-summary">
<pid>1</pid>
<process-name>/lib/systemd/systemd</process-name>
<size>159116</size>
<size-percent>0</size-percent>
<resident>8408</resident>
<resident-percent>0</resident-percent>
</pmap-terse-summary>
...
</pmap-terse-information>
</system-memory-information>
</multi-routing-engine-item>
<multi-routing-engine-item>
<re-name>re0</re-name>
<system-memory-information>
<system-memory-summary-information>
<system-memory-total>16125576</system-memory-total>
<system-memory-total-percent>100%</system-memory-total-percent>
<system-memory-used>6912492</system-memory-used>
<system-memory-used-percent>42%</system-memory-used-percent>
<system-memory-active>4936580</system-memory-active>
<system-memory-active-percent>30%</system-memory-active-percent>
<system-memory-inactive>8939976</system-memory-inactive>
<system-memory-inactive-percent>55%</system-memory-inactive-percent>
<system-memory-free>170744</system-memory-free>
<system-memory-free-percent>1%</system-memory-free-percent>
<system-memory-buffer>524676</system-memory-buffer>
<system-memory-buffer-percent>3%</system-memory-buffer-percent>
<system-memory-swap>8517664</system-memory-swap>
<system-memory-swap-percent>52%</system-memory-swap-percent>
</system-memory-summary-information>
<pmap-terse-information xmlns="http://xml.juniper.net/fbsd10/14.2I0/junos-pmap">
<pmap-terse-summary junos:style="pmap-process-terse-summary">
<pid>1</pid>
<process-name>/sbin/init</process-name>
<size>162220</size>
<size-percent>0</size-percent>
<resident>10780</resident>
<resident-percent>0</resident-percent>
</pmap-terse-summary>
...
</pmap-terse-information>
</system-memory-information>
</multi-routing-engine-item>
...
</multi-routing-engine-results>
Release Information
Command introduced in Junos OS Release 12.1.