amintej
Sep 15, 2017Cirrus
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 ?
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 ?
Hello Amintej,
If you want to know which processes are swapping you can launch this command :
for file in /proc/*/status ; do awk '/VmSwap|Name/{printf $2 " " $3}END{ print ""}' $file; done | sort -k 2 -n -r | less
The output will show a ranking of the most consuming swap process.
After that you can check the following doc. to know what is the function of each process in your system.
https://support.f5.com/csp/article/K13444
Hope it helps
Regards
Hi Amintej,
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
Hi,
Can you provide the version of your BigIP?
one of my customer have a High Swap utilization since 13.0 upgrade. he opened a support case about it.