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ASA5525 with Firepower Module: High swap usage at normal memory usage

swscco001
Level 3
Level 3

Hello everybody,

our customer has a ASA5525 with Firepower Module running OS rel. 6.6.4.

 

Our monitoring generated a warning because the swap usage reached 90%.

 

The Health Monitor of the module in the FMC has still no red bubble yet.

 

When I login to the module I get the following relevant command outputs:

> system support swap
             total       used       free     shared    buffers     cached
Mem:          3207       2145       1061          0        132        283
-/+ buffers/cache:       1729       1477
Swap:         3233       2892        340


> show memory
             total       used       free     shared    buffers     cached
Mem:       3284312    2228872    1055440          0     136256     321328
-/+ buffers/cache:    1771288    1513024
Swap:      3310716    2961980     348736



Time         CPU    %usr   %nice    %sys %iowait    %irq   %soft  %steal  %guest   %idle
09:59:20     all    6.42    0.00    1.93    0.18    0.00    0.01    0.93    0.00   90.53


How can it be that the swap usage is at 90% when the memory usage is at approx. 67% and
can I reduce the swap space usage anyhow?

Not much to find in the WWW regarding this topic.

Thanks a lot!



Bye

R.

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