high memory utilization with SNMP query

joachim.ritz · ‎05-30-2012

Hello,

I have an ASA 5505 which gives me an "high memory utilization" when I make an SNMP query.

When I'm logged in via command line and run a "show memory detail", I do not see, that I should have an high memory utilization. here is what show mem detail gives me:

Free memory: 358981376 bytes (67%)

Used memory:

Allocated memory in use: 66478336 bytes (12%)

Reserved memory: 111411200 bytes (21%)

----------------------------- ----------------

Total memory: 536870912 bytes (100%)

Dynamic Shared Objects(DSO): 0 bytes

Least free memory: 357105736 bytes (67%)

Most used memory: 179765176 bytes (33%)

MEMPOOL_DMA POOL STATS:

Non-mmapped bytes allocated = 39583744

Number of free chunks = 11

Number of mmapped regions = 0

Mmapped bytes allocated = 0

Max memory footprint = 39583744

Keepcost = 6864592

Max contiguous free mem = 6864592

Allocated memory in use = 32717808

Free memory = 6865936

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

fragment size count total

(bytes) (bytes)

---------------- ---------- --------------

16 3 48

24 5 120

32 1 32

48 1 48**

1024 1 1096

6864592 1 6864592*

* - top most releasable chunk.

** - contiguous memory on top of heap.

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

fragment size count total

(bytes) (bytes)

---------------- ---------- --------------

48 10 480

56 1415 79240

64 131 8384

72 14 1008

80 13 1040

88 2 176

112 25 2800

120 4 480

128 1 128

136 6 816

144 8 1152

168 1 168

176 8 1408

184 2 368

232 1 232

248 1 248

256 5 1280

384 1 384

512 4 2048

1024 4 4096

2048 1 2048

4096 2 8192

8192 2 16384

12288 1 12288

16384 3 49152

24576 6 147456

32768 4 131072

65536 12 786432

98304 6 589824

131072 3 393216

196608 2 393216

262144 3 786432

393216 1 393216

524288 1 524288

786432 1 786432

1048576 3 3145728

1572864 1 1572864

2097152 3 6291456

12582912 1 12582912

MEMPOOL_GLOBAL_SHARED POOL STATS:

Non-mmapped bytes allocated = 385875968

Number of free chunks = 932

Number of mmapped regions = 0

Mmapped bytes allocated = 0

Max memory footprint = 385875968

Keepcost = 317635768

Max contiguous free mem = 317635768

Allocated memory in use = 66475784

Free memory = 319400184

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

fragment size count total

(bytes) (bytes)

---------------- ---------- --------------

16 292 4672

24 276 6624

32 100 3200

40 122 4880

48 1 48**

48 11 528

56 1 56

72 1 72

88 1 88

96 3 288

120 2 240

128 2 256

152 1 152

176 1 176

216 1 216

240 1 240

256 19 6208

384 7 3064

512 1 536

1024 52 68976

2048 15 40160

3072 3 11072

4096 3 13696

6144 3 23504

8192 4 40760

12288 2 26768

16384 1 17136

24576 1 28688

65536 2 141208

131072 1 135336

1048576 1 1185320

317635768 1 317635768*

* - top most releasable chunk.

** - contiguous memory on top of heap.

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

fragment size count total

(bytes) (bytes)

---------------- ---------- --------------

48 1056 50688

56 3064 171584

64 943 60352

72 175 12600

80 1204 96320

88 327 28776

96 78 7488

104 1954 203216

112 139 15568

120 285 34200

128 330 42240

136 27 3672

144 37 5328

152 1082 164464

160 127 20320

168 127 21336

176 205 36080

184 601 110584

192 203 38976

200 164 32800

208 9 1872

216 52 11232

224 22 4928

232 9 2088

240 160 38400

248 76 18848

256 885 226560

384 253 97152

512 382 195584

768 22 16896

1024 267 273408

1536 14 21504

2048 2060 4218880

3072 38 116736

4096 65 266240

6144 9 55296

8192 102 835584

12288 19 233472

16384 51 835584

24576 11 270336

32768 34 1114112

49152 5 245760

65536 164 10747904

98304 6 589824

131072 16 2097152

196608 10 1966080

262144 1 262144

393216 7 2752512

524288 5 2621440

786432 1 786432

1048576 1 1048576

1572864 1 1572864

2097152 2 4194304

4194304 1 4194304

8388608 2 16777216

Summary for all pools:

Non-mmapped bytes allocated = 425459712

Number of free chunks = 943

Number of mmapped regions = 0

Mmapped bytes allocated = 0

Max memory footprint = 425459712

Keepcost = 324500360

Allocated memory in use = 99193592

Free memory = 326266120

So why do I get an high utilization memory from the SNMP query?

Thx in advance for helping.