Cisco Firewall 5506 Firepower suddenly consuming high memory 3% > 83% . (80% jump) please help

[Haider Malik]

Hello 

I have a Cisco Firewall FirePower 5506 and suddenly its consuming high memory it was on 3% and now its on 83% . 

I have disabled all the Syslogs and logging on this firewall however no change at all memory is still very high . 

Please guide what else i should check ? 

There are not much load on the this ASA its just used for few traffic . 

[marce1000]

  - One thing you can always do is check the current software version on your firewall ; look at more recent releases , if any, check release notes - look at the resolved caveats section(s) - check whether this problem is discussed.

M.

[Haider Malik]

It was working fine and there is no change which could cause such issue i wanted to know if there is anything i can check on the FW ? 

below is the release on this and its working fine from last 1 year now almost. 
Cisco Adaptive Security Appliance Version 9.6(1)

[marce1000]

 - Check any system or fire walling related logs and look for abnormal events during the time frame that the memory usage sparked.

M/

[Haider Malik]

Its continuously on 83% . 

I am checking the logs... i am worrying about this my FW may crash soon . :( 

[Haider Malik]

last 12 months its working fine just suddenly jumped to 84%

[Haider Malik]

when i CLI i see 39% free. 

ciscoasa# sh memory detail
Free memory heap: 11684976 bytes ( 1%)
Free memory system: 585941598 bytes (39%)
Used memory:
Allocated memory in use: 4865569712 bytes (324%)
Reserved memory (DMA): 205520896 bytes (14%)
Memory overhead: 0 bytes ( 0%)
----------------------------- ------------------
Total memory: 1502519902 bytes (100%)

Least free memory: 0 bytes ( 0%)
Most used memory: 5071495232 bytes (338%)
MEMPOOL_HEAPCACHE_0 POOL STATS:

Non-mmapped bytes allocated = 314572800
Number of free chunks = 153182
Number of mmapped regions = 0
Mmapped bytes allocated = 0
Max memory footprint = 314572800
Keepcost = 64
Max contiguous free mem = 144
Allocated memory in use = 302887824
Free memory = 11684976

----- fragmented memory statistics -----

fragment size count total
(bytes) (bytes)
---------------- ---------- --------------
32 46127 1476064
48 9700 465600
64 1 64*
64 8646 553344
80 29257 2340560
96 1 96**
96 7296 700416
112 39941 4473392
128 5219 668032
144 6998 1007712

* - top most releasable chunk.
** - contiguous memory on top of heap.

----- allocated memory statistics -----

fragment size count total
(bytes) (bytes)
---------------- ---------- --------------
80 1692 135360
96 12804 1229184
112 3203 358736
128 2226 284928
144 3582 515808
160 551571 88251360
176 9790 1723040
192 356 68352
208 311 64688
224 200 44800
240 216 51840
256 2549 652544
384 645 247680
512 749 383488
768 439 337152
1024 782 800768
1536 151 231936
2048 302 618496
3072 58 178176
4096 317 1298432
6144 42 258048
8192 192 1572864
12288 109 1339392
16384 617 10108928
24576 24 589824
32768 49 1605632
49152 25 1228800
65536 454 29753344
98304 19 1867776
131072 9 1179648
196608 19 3735552
262144 13 3407872
393216 15 5898240
524288 5 2621440
786432 13 10223616
1048576 11 11534336
1572864 4 6291456
2097152 4 8388608
3145728 2 6291456
4194304 3 12582912
8388608 1 8388608
12582912 3 37748736

MEMPOOL_DMA POOL STATS:

Non-mmapped bytes allocated = 205520896
Number of free chunks = 147
Number of mmapped regions = 0
Mmapped bytes allocated = 0
Max memory footprint = 205520896
Keepcost = 47738288
Max contiguous free mem = 47738288
Allocated memory in use = 157609600
Free memory = 47911296

----- fragmented memory statistics -----

fragment size count total
(bytes) (bytes)
---------------- ---------- --------------
32 2 64
64 4 256
96 1 96**
128 1 128
144 6 864
160 2 320
384 3 1200
512 26 18304
768 31 27824
1024 65 68224
2048 1 2384
6144 2 12608
16384 2 40352
47738288 1 47738288*

* - top most releasable chunk.
** - contiguous memory on top of heap.

----- allocated memory statistics -----

fragment size count total
(bytes) (bytes)
---------------- ---------- --------------
160 1 160
224 2 448
240 8 1920
256 2 512
384 1 384
512 6 3072
768 1 768
1024 171 175104
1536 1023 1571328
2048 2 4096
4096 3 12288
12288 2 24576
16384 19 311296
24576 1 24576
32768 45 1474560
65536 5 327680
131072 11 1441792
196608 1 196608
262144 8 2097152
393216 2 786432
524288 2 1048576
786432 8 6291456
1048576 3 3145728
1572864 9 14155776
2097152 4 8388608
3145728 3 9437184
12582912 3 37748736

MEMPOOL_GLOBAL_SHARED POOL STATS:

Non-mmapped bytes allocated = 29310976
Number of free chunks = 55422
Number of mmapped regions = 1
Mmapped bytes allocated = 180224
Max memory footprint = 0
Keepcost = 117152
Max contiguous free mem = 117152
Allocated memory in use = 24723952
Free memory = 4587024

----- fragmented memory statistics -----

fragment size count total
(bytes) (bytes)
---------------- ---------- --------------
32 4458 142656
48 17797 854256
64 3257 208448
80 11380 910400
96 2139 205344
112 2685 300720
128 13697 1753216
512 1 512
12288 1 12768

----- allocated memory statistics -----

fragment size count total
(bytes) (bytes)
---------------- ---------- --------------
96 1 96
112 1 112
144 162173 23352912
160 5976 956160
176 4 704
192 9 1728
208 4 832
224 9 2016
240 5 1200
256 77 19712
384 8 3072
512 89 45568
768 8 6144
1024 5 5120
1536 4 6144
2048 23 47104
3072 2 6144
4096 3 12288
6144 1 6144
12288 1 12288
24576 1 24576
32768 1 32768
49152 1 49152
65536 1 65536
131072 1 131072

Summary for all pools:

Non-mmapped bytes allocated = 549404672
Number of free chunks = 208751
Number of mmapped regions = 0
Mmapped bytes allocated = 180224
Max memory footprint = 520093696
Keepcost = 47855504
Allocated memory in use = 485221376
Free memory = 64183296