Firepower 7.0.5: mempool MEMPOOL_HEAPCACHE_0_1 usage too high

[swscco001]

Hello everybody,

our customer uses FMCv 7.0.5 and a Firepower 1120 running rel. 7.0.5.

The monitoring reported the following:

CRITICAL - mempool MEMPOOL_HEAPCACHE_0_1 usage is 94.41%, mempool DP System memory_1 usage is 53.29%
mempool Snort System memory_1 usage is 18.26%
mempool MEMPOOL_MSGLYR_HB_1 usage is 24.15%
mempool MEMPOOL_MSGLYR_1 usage is 24.63%
mempool MEMPOOL_DMA_1 usage is 61.54%
mempool MEMPOOL_GLOBAL_SHARED_1 usage is 24.64%

The FMC does not show any error or warning in the Health Monitor for the device.

The users does not complain about any issues.

I did no reboot of the device yet.

I went to the device and got the following output:

> show memory system
              total        used        free      shared  buff/cache   available
Mem:       16366476     5817544     9545000      285108     1003932     9986208
Swap:       9981052      418816     9562236

> show memory detail

Heap Memory:
   Free Memory:
      Heapcache Pool:                       44798976 bytes (  1% )         <=========
      Global Shared Pool:                     509296 bytes (  0% )
      Message Layer Pool:                    6056864 bytes (  0% )
      Message Layer HB Pool:                  198832 bytes (  0% )
      System:                             2482971843 bytes ( 46% )
   Used Memory:
      Heapcache Pool:                      733244416 bytes ( 14% )
      Global Shared Pool:                   30386832 bytes (  1% )
      Reserved (Size of DMA Pool):        1073741824 bytes ( 20% )
      Reserved for messaging:                2069600 bytes (  0% )
      Reserved for HB messaging:               63312 bytes (  0% )
      MMAP usage:                           58313104 bytes (  1% )
      System Overhead:                     977942128 bytes ( 18% )
-------------------------------------     ----------------
   Total Memory:                          5410034883 bytes ( 100% )

Warning:  The information reported here is computationally expensive to
          determine, and may result in CPU hogs and performance impact.
...

The complete output is attached.

My questions:
1. How serious is the error message?

2. What can I do to get rid of the error message.

Thanks a lot for every hint!


Bye
R.

[Sheraz.Salim · Accepted solution]

I found a similar post on different website have a look at it Here 

If FMC is not reporting any issue it should be fine as FTD is managed via FMC and if something not right FMC will report.