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High CPU Utilization on ASA 5520 Version 9.1(6)

mrgiridangi1
Level 1
Level 1

Hello,

i got an cpu is high issue in  my asa firewall 5520 version 9.1(6).

FW# sh xlate count
1051 in use, 17216 most used

fw# sh cpu detailed

Break down of per-core data path versus control point cpu usage:
Core         5 sec              1 min              5 min
Core 0       95.0 (0.0 + 95.0)  95.0 (0.0 + 95.0)  95.0 (0.0 + 95.0)

Current control point elapsed versus the maximum control point elapsed for:
      5 seconds = 99.0%; 1 minute: 99.8%; 5 minutes: 100.0%


CPU utilization of external processes for:
      5 seconds = 0.2%; 1 minute: 0.0%; 5 minutes: 0.0%


Total CPU utilization for:
      5 seconds = 95.2%; 1 minute: 95.1%; 5 minutes: 95.0%

 

FW# sh processes cpu-usage non-zero sorted
PC         Thread       5Sec     1Min     5Min   Process
0x0829bc38   0x6edd4e74    91.8%    91.9%    92.0%   Dispatch Unit
0x0914652c   0x6edcb230     2.7%     2.8%     2.8%   Logger
0x090f9bdd   0x6edb97a0     0.2%     0.1%     0.0%   ssh
0x087bf1ee   0x6edc04cc     0.2%     0.2%     0.2%   ARP Thread

 

 

 

please help me to resolve this issue

 

 

Thank you,

Giri dangi

 

 

 

4 Replies 4

Vibhor Amrodia
Cisco Employee
Cisco Employee

Hi,

Please provide me the show traffic output ? Also , show tech would be helpful at the time of High CPU.

Thanks and Regards,

Vibhor Amrodia

FW# sh traffic
outside:
        received (in 1706663.260 secs):
                1142976329 packets      433879952912 bytes
                0 pkts/sec      254000 bytes/sec
        transmitted (in 1706663.260 secs):
                1268530227 packets      986991018742 bytes
                0 pkts/sec      578001 bytes/sec
      1 minute input rate 476 pkts/sec,  109650 bytes/sec
      1 minute output rate 596 pkts/sec,  472414 bytes/sec
      1 minute drop rate, 8 pkts/sec
      5 minute input rate 467 pkts/sec,  109938 bytes/sec
      5 minute output rate 615 pkts/sec,  581149 bytes/sec
      5 minute drop rate, 12 pkts/sec
inside:
        received (in 1706663.250 secs):
                17994957293 packets     8958357276132 bytes
                10000 pkts/sec  5249000 bytes/sec
        transmitted (in 1706663.250 secs):
                29282351782 packets     27786746612833 bytes
                17001 pkts/sec  16281002 bytes/sec
      1 minute input rate 14246 pkts/sec,  7473098 bytes/sec
      1 minute output rate 26757 pkts/sec,  29798221 bytes/sec
      1 minute drop rate, 8 pkts/sec
      5 minute input rate 13879 pkts/sec,  6501578 bytes/sec
      5 minute output rate 26565 pkts/sec,  30020906 bytes/sec
      5 minute drop rate, 9 pkts/sec
websvcs:
        received (in 1706664.380 secs):
                29257615811 packets     28411980196461 bytes
                17002 pkts/sec  16647000 bytes/sec
        transmitted (in 1706664.380 secs):
                18999910687 packets     9302745831226 bytes
                11001 pkts/sec  5450001 bytes/sec
      1 minute input rate 26583 pkts/sec,  30051675 bytes/sec
      1 minute output rate 15165 pkts/sec,  7563136 bytes/sec
      1 minute drop rate, 20 pkts/sec
      5 minute input rate 26406 pkts/sec,  30385932 bytes/sec
      5 minute output rate 14812 pkts/sec,  6586208 bytes/sec
      5 minute drop rate, 36 pkts/sec
dmz:
        received (in 1706664.370 secs):
                15014356 packets        3555144226 bytes
                1 pkts/sec      2000 bytes/sec
        transmitted (in 1706664.370 secs):
                18913661 packets        13003848934 bytes
                1 pkts/sec      7000 bytes/sec
      1 minute input rate 12 pkts/sec,  2621 bytes/sec
      1 minute output rate 16 pkts/sec,  12810 bytes/sec
      1 minute drop rate, 0 pkts/sec
      5 minute input rate 9 pkts/sec,  1313 bytes/sec
      5 minute output rate 15 pkts/sec,  14023 bytes/sec
      5 minute drop rate, 0 pkts/sec
CMS:
        received (in 1706714.960 secs):
                3555103 packets 423046514 bytes
                2 pkts/sec      1 bytes/sec
        transmitted (in 1706714.960 secs):
                36989901 packets        9204525176 bytes
                1 pkts/sec      5000 bytes/sec
      1 minute input rate 2 pkts/sec,  363 bytes/sec
      1 minute output rate 13 pkts/sec,  2937 bytes/sec
      1 minute drop rate, 0 pkts/sec
      5 minute input rate 3 pkts/sec,  439 bytes/sec
      5 minute output rate 13 pkts/sec,  2867 bytes/sec
      5 minute drop rate, 0 pkts/sec
failover:
        received (in 1706668.930 secs):
                2752247 packets 225723254 bytes
                1 pkts/sec      1 bytes/sec
        transmitted (in 1706668.930 secs):
                299216953 packets       345160005498 bytes
                1 pkts/sec      202000 bytes/sec
      1 minute input rate 1 pkts/sec,  120 bytes/sec
      1 minute output rate 185 pkts/sec,  208309 bytes/sec
      1 minute drop rate, 0 pkts/sec
      5 minute input rate 1 pkts/sec,  118 bytes/sec
      5 minute output rate 182 pkts/sec,  205575 bytes/sec
      5 minute drop rate, 0 pkts/sec

----------------------------------------
Aggregated Traffic on Physical Interface
----------------------------------------
GigabitEthernet0/0:
        received (in 1706718.020 secs):
                1142987271 packets      456643285944 bytes
                0 pkts/sec      267000 bytes/sec
        transmitted (in 1706718.020 secs):
                1268427576 packets      1010518455246 bytes
                0 pkts/sec      592002 bytes/sec
      1 minute input rate 476 pkts/sec,  119281 bytes/sec
      1 minute output rate 596 pkts/sec,  483088 bytes/sec
      1 minute drop rate, 0 pkts/sec
      5 minute input rate 467 pkts/sec,  119110 bytes/sec
      5 minute output rate 615 pkts/sec,  592318 bytes/sec
      5 minute drop rate, 0 pkts/sec
GigabitEthernet0/1:
        received (in 1706718.050 secs):
                17995152458 packets     9320161344093 bytes
                10000 pkts/sec  5460001 bytes/sec
        transmitted (in 1706718.050 secs):
                29282394737 packets     28334667305681 bytes
                17001 pkts/sec  16601001 bytes/sec
      1 minute input rate 15291 pkts/sec,  8454558 bytes/sec
      1 minute output rate 26331 pkts/sec,  29243648 bytes/sec
      1 minute drop rate, 0 pkts/sec
      5 minute input rate 13879 pkts/sec,  6793026 bytes/sec
      5 minute output rate 26564 pkts/sec,  30509352 bytes/sec
      5 minute drop rate, 0 pkts/sec
GigabitEthernet0/2:
        received (in 1706734.540 secs):
                29258391265 packets     28960987609872 bytes
                17001 pkts/sec  16968002 bytes/sec
        transmitted (in 1706734.540 secs):
                19000113303 packets     9684550989088 bytes
                11001 pkts/sec  5674001 bytes/sec
      1 minute input rate 26337 pkts/sec,  29563739 bytes/sec
      1 minute output rate 16206 pkts/sec,  8563970 bytes/sec
      1 minute drop rate, 0 pkts/sec
      5 minute input rate 26404 pkts/sec,  30871997 bytes/sec
      5 minute output rate 14813 pkts/sec,  6895033 bytes/sec
      5 minute drop rate, 0 pkts/sec
GigabitEthernet0/3:
        received (in 1706734.570 secs):
                2752706 packets 276383084 bytes
                1 pkts/sec      0 bytes/sec
        transmitted (in 1706734.570 secs):
                299221022 packets       350550105092 bytes
                1 pkts/sec      205002 bytes/sec
      1 minute input rate 1 pkts/sec,  147 bytes/sec
      1 minute output rate 183 pkts/sec,  210810 bytes/sec
      1 minute drop rate, 0 pkts/sec
      5 minute input rate 1 pkts/sec,  147 bytes/sec
      5 minute output rate 182 pkts/sec,  208868 bytes/sec
      5 minute drop rate, 0 pkts/sec
Internal-Control0/0:
        received (in 1706737.930 secs):
                3463948 packets 251239714 bytes
                2 pkts/sec      1 bytes/sec
        transmitted (in 1706737.930 secs):
                3890225 packets 278413661 bytes
                2 pkts/sec      2 bytes/sec
      1 minute input rate 2 pkts/sec,  150 bytes/sec
      1 minute output rate 2 pkts/sec,  166 bytes/sec
      1 minute drop rate, 0 pkts/sec
      5 minute input rate 1 pkts/sec,  146 bytes/sec
      5 minute output rate 2 pkts/sec,  162 bytes/sec
      5 minute drop rate, 0 pkts/sec
Internal-Data0/0:
        received (in 1706738.990 secs):
                31000966962 packets     24938616789453 bytes
                18000 pkts/sec  14611001 bytes/sec
        transmitted (in 1706738.990 secs):
                48334646869 packets     41070708845789 bytes
                28000 pkts/sec  24063000 bytes/sec
      1 minute input rate 15366 pkts/sec,  14038303 bytes/sec
      1 minute output rate 42544 pkts/sec,  40230593 bytes/sec
      1 minute drop rate, 0 pkts/sec
      5 minute input rate 14769 pkts/sec,  13830434 bytes/sec
      5 minute output rate 41184 pkts/sec,  39803288 bytes/sec
      5 minute drop rate, 0 pkts/sec
Management0/0:
        received (in 1706739.020 secs):
                18563807 packets        4292150406 bytes
                0 pkts/sec      2001 bytes/sec
        transmitted (in 1706739.020 secs):
                55888372 packets        23183892540 bytes
                0 pkts/sec      13002 bytes/sec
      1 minute input rate 16 pkts/sec,  2484 bytes/sec
      1 minute output rate 33 pkts/sec,  15017 bytes/sec
      1 minute drop rate, 0 pkts/sec
      5 minute input rate 13 pkts/sec,  1984 bytes/sec
      5 minute output rate 28 pkts/sec,  17343 bytes/sec
      5 minute drop rate, 0 pkts/sec

 

 

 

hi,

 

The aggregate traffic/s is not that high. Total connection is not that high as well.

However seems websvcs interface has high traffic compare to other interface.

 

If you have ASDM can you please check its log, do you see some unusual message?

 

if yes, please post here. It might be a traffic loop or some DOS message?

 

Also make sure you don't have http inspection enabled.

Thanks

thank you pranay

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