Palo Alto PA-3050 100 % CPU

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Palo Alto PA-3050 100 % CPU

L3 Networker

These were upgraded from 7.0.6 to 7.1.2 on 31 May.  Since then we are suffering from the data plane very frequently using 100% CPU.

 

For example:

admin@PA-3050-5(active)> show running resource-monitor hour

 

Resource monitoring sampling data (per hour):

 

CPU load (%) during last 24 hours:

core    0       1       2       3       4       5

     avg max avg max avg max avg max avg max avg max

       *   *   7  35  16 100  17 100  19 100  20 100

       *   *   5  45  10  73  11  74  13  75  13  75

       *   *   4  15   8  60   8  60  10  61  10  60

       *   *   4   6   7  12   8  13  10  15  10  16

       *   *   4   6   7  19   8  19   9  22  10  22

       *   *   4   6   7  15   8  15   9  19  10  19

       *   *   4   7   7  13   8  14  10  16  10  17

       *   *   4   7   8  14   8  15  10  17  11  18

       *   *  24  89  45 100  46 100  48 100  48 100

       *   *  42  81  81 100  81 100  82 100  82 100

       *   *  41  85  85 100  85 100  86 100  86 100

       *   *  27  60  69 100  70 100  71 100  72 100

       *   *  35  79  77 100  77 100  78 100  78 100

       *   *  24  77  51 100  52 100  54 100  55 100

       *   *  28  79  59 100  59 100  61 100  62 100

       *   *  30  83  65 100  66 100  68 100  68 100

       *   *  29  96  63 100  63 100  65 100  65 100

       *   *  32  91  64 100  65 100  66 100  66 100

       *   *  14  45  35 100  36 100  39 100  40 100

       *   *  21  90  48 100  49 100  51 100  52 100

       *   *  13  43  31 100  32 100  35 100  36 100

       *   *  10  44  24 100  25 100  28 100  29 100

       *   *  11  42  26 100  27 100  30 100  31 100

       *   *  16  74  36 100  37 100  40 100  41 100

 

We turned on the logging option to show dataplane under severe load and it is logging it many times an hour.

15 REPLIES 15

Hi,

I don't know if this is affecting a PA-5k series. I didn't see anybody here reported but what l can confirm that even after installing from 7.1.1 > 7.1.3 on the PA-3050 we still experienced same symptoms of high data plane CPU spikes as on . In the end, TAC found out a lot of "unknown-UDP" sessions. 

> show session all filter application unknown-udp

Eliminating these seems to fixed the issue.

Cheers

 

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