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Forum Discussion

amintej's avatar
amintej
Icon for Cirrus rankCirrus
Sep 15, 2017

Swap memory

Hello, one of our load balancers have a high use (more than 65%) of Swap memory, however TMM memory is under 20%. Do you know how to troubleshot why swap is high ?  
application delivery
LTM
Jad_Tabbara__J1's avatar
Jad_Tabbara__J1
Icon for Cirrostratus rankCirrostratus
Sep 18, 2017

Hi Amintej,

  • "java" is used by tomcat that provides the BIG IP Configuration Utility
  • "errdefsd" is used by the HSL (High Speed Logging) over the management interface
  • "icrd_child" is used by the icontrol Rest API
  • "scriptd" runs application template implementation scripts when an application service is created or updated.

How many objects do you have in your the LTM ?

Maybe you will need to increase the allocated memory for the Management (MGMT) module from the GUI "System ›› Resource Provisioning"

Options include Small, Medium, and Large. Use Large for configurations containing more than 2000 objects, or more specifically, for any configuration that exceeds 1000 objects per 2 GB of installed memory. Changing the Management (MGMT) size after initial provisioning causes a reprovision operation.

You can also check the memory usage with

tmsh show /sys memory

Also check the /var/log/ltm to view if you have explicit alerts...

If you don't find any key for you problem upload a qkview and open a case

Hope it helps regards