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Cisco Employee

WAAS @ high CPU 89%

Hi Experts,

I have a WAAS device which exceeds the CPU thresholds though optmization connections are at 50%. Is this expected or something fishy. Need your experts experience.             

top - 08:43:29 up 297 days,  2:38,  2 users,  load average: 8.02, 8.90, 9.32
Tasks: 441 total,   1 running, 440 sleeping,   0 stopped,   0 zombie
Cpu(s):  0.0%us, 28.9%sy, 41.0%ni, 11.3%id,  2.3%wa,  0.2%hi, 16.3%si,  0.0%st
Mem:  12188284k total, 12058508k used,   129776k free,    50176k buffers
Swap: 12582664k total,     1168k used, 12581496k free,  6453680k cached

  PID USER      PR  NI  VIRT  RES  SHR S %CPU %MEM    TIME+  COMMAND                                                               
10079 admin     30  10 5744m 3.3g  43m S 68.1 28.8 195037:10 so_dre64                                                              
10103 admin     30  10 1251m  38m 2712 S  1.2  0.3   1361:27 httpmuxd                                                              
2228 admin     30  10 1081m 764m  74m S  1.1  6.4   1523:15 java                                                                  
2227 admin     30  10 1081m 764m  74m S  1.0  6.4   1532:30 java                                                                  
10732 admin     30  10 1251m  38m 2712 S  1.0  0.3   1014:33 httpmuxd                                                              
10733 admin     30  10 1251m  38m 2712 S  1.0  0.3   1011:43 httpmuxd                                                              
3818 admin     30  10 1081m 764m  74m S  0.7  6.4 723:58.13 java                                                                  
3816 admin     30  10 1081m 764m  74m S  0.7  6.4 722:14.13 java                                                                  
2272 admin     30  10 1081m 764m  74m S  0.6  6.4 936:58.89 java                                                                  
3812 admin     30  10 1081m 764m  74m S  0.6  6.4 722:39.58 java                                                                  
3804 admin     30  10 1081m 764m  74m S  0.5  6.4 723:01.25 java                                                                  
3814 admin     30  10 1081m 764m  74m S  0.5  6.4 723:06.14 java                                                                  
10734 admin     30  10 1251m  38m 2712 S  0.3  0.3 367:00.92 httpmuxd                                                              
   16 admin     15  -5     0    0    0 S  0.2  0.0 486:48.88 events/1                                                              
3813 admin     30  10 1081m 764m  74m S  0.2  6.4 350:52.23 java                                                                  
3819 admin     30  10 1081m 764m  74m S  0.2  6.4 352:16.43 java                                                                  
3822 admin     30  10 1081m 764m  74m S  0.2  6.4 350:18.69 java                                                                  
7822 admin     30  10 1081m 764m  74m S  0.2  6.4 119:42.06 java                                                                  
17318 admin     30  10  2300 1296  824 R  0.2  0.0   0:00.12 top                                                                   
   15 admin     15  -5     0    0    0 S  0.2  0.0 367:12.92 events/0                                                              
   17 admin     15  -5     0    0    0 S  0.2  0.0 152:58.99 events/2                                                              
   18 admin     15  -5     0    0    0 S  0.2  0.0 149:40.85 events/3                                                              
  322 admin     15  -5     0    0    0 S  0.2  0.0 197:08.50 kswapd0                                                               
2224 admin     30  10 1081m 764m  74m S  0.2  6.4 226:29.45 java                                                                  
3807 admin     30  10 1081m 764m  74m S  0.2  6.4 352:20.70 java                                                                  
3815 admin     30  10 1081m 764m  74m S  0.2  6.4 119:40.81 java                                                                  
3820 admin     30  10 1081m 764m  74m S  0.2  6.4 119:58.79 java                                                                  
3821 admin     30  10 1081m 764m  74m S  0.2  6.4 350:46.55 java                                                                  
7820 admin     30  10 1081m 764m  74m S  0.2  6.4 119:51.71 java                                                                  
11438 admin     30  10 1081m 764m  74m S  0.2  6.4 119:56.24 java                                                                  
15703 admin     20   0     0    0    0 S  0.2  0.0   0:00.68 pdflush                                                               
1035 admin     39  19     0    0    0 S  0.1  0.0   2876:38 kipmi0                                                                
2207 admin     30  10 1081m 764m  74m S  0.1  6.4  28:53.42 java                                                                  
2208 admin     30  10 1081m 764m  74m S  0.1  6.4  28:52.18 java                                                                  
2216 admin     30  10 1081m 764m  74m S  0.1  6.4 116:17.43 java                                                                  
2223 admin     30  10 1081m 764m  74m S  0.1  6.4  16:11.50 java                                                                  
2229 admin     30  10 1081m 764m  74m S  0.1  6.4 263:55.23 java                                                                  
2233 admin     30  10 1081m 764m  74m S  0.1  6.4  27:36.34 java                                                                  
2235 admin     30  10 1081m 764m  74m S  0.1  6.4  27:41.57 java
3817 admin     30  10 1081m 764m  74m S  0.1  6.4  77:40.14 java                                                                  
10108 admin     30  10 73720 4540 1748 S  0.1  0.0  84:33.82 nfs_ao                                                                
10202 admin     30  10  244m  59m 9968 S  0.1  0.5  29:34.82 java                                                                  
10737 admin     30  10 1251m  38m 2712 S  0.1  0.3  56:56.72 httpmuxd                                                              
10738 admin     30  10 1251m  38m 2712 S  0.1  0.3  56:43.84 httpmuxd                                                              
10739 admin     30  10 1251m  38m 2712 S  0.1  0.3  56:05.68 httpmuxd                                                              
10741 admin     30  10 1251m  38m 2712 S  0.1  0.3  55:58.25 httpmuxd                                                              
10742 admin     30  10 1251m  38m 2712 S  0.1  0.3  56:02.11 httpmuxd                                                              
10744 admin     30  10 1251m  38m 2712 S  0.1  0.3  56:11.04 httpmuxd                                                              
10750 admin     30  10 85364  32m 5204 S  0.1  0.3 257:23.30 mapi_ao                                                               
10751 admin     30  10 85364  32m 5204 S  0.1  0.3 257:02.83 mapi_ao                                                          

xxxxxxxxxxxxxxx#show statistics connection

Current Active Optimized Flows:                      5619
   Current Active Optimized TCP Plus Flows:          5939
   Current Active Optimized TCP Only Flows:          675
   Current Active Optimized TCP Preposition Flows:   0
Current Active Auto-Discovery Flows:                 7
Current Reserved Flows:                              188
Current Active Pass-Through Flows:                   208
Historical Flows:                                    623
 
xxxxxxxxx#show tfo detail

   Policy Engine Config Item            Value              
   -------------------------            -----              
   State                                Registered         
   Default Action                       Use Policy         
   Connection Limit                     12000              
   Effective Limit                      11809              
   Keepalive timeout                    3.0 seconds

Everyone's tags (5)
4 REPLIES 4
Highlighted
Enthusiast

WAAS @ high CPU 89%

This can be expected.  Look at your top output so_dre64 is consuming 68% CPU.  This is probably normal and based on traffic flow / the amount/ type of data being processed by DRE.  If you suspect performance issues because of high CPU suggest you open a TAC case and give more details than just a top output.   A sysreport would need to be analyzed as well as provide a specific problem / concern.

Regards,

Mike

Highlighted
Cisco Employee

WAAS @ high CPU 89%

Hello Shankar,

In addition to  Michael's reply, here are the steps to get to the CPU statistics on detailed, it is not easy to say when a box is really getting overload with one output, we should look over the CPU behavior over the  months, weeks, days and  hours of CPU utilization.

1- get the sysreport from the device: ( this is heavy process make sure you don't run the command when there's a lot of traffic on your customer's  network, schedule sometime ahead if needed)

WAE#copy sysreport ftp         

2- get the sysreport open and surf through the following path:

state/actona/conf/Manager/MRTG/stats/gw/

3- along with  logs analisys and the CPU charts it should help your client  to have a idea how the WAE and network traffic really behave, figure out possible network issues or disregard normal CPU utilization.

4- I suggest to use the Cisco employee tech zone for any  further questions on any technology.

Regards,

Felix

Cisco TAC

Highlighted
Cisco Employee

WAAS @ high CPU 89%

Thanks Michael & Felix....I will look at sysreport..

Highlighted
Cisco Employee

WAAS @ high CPU 89%

your welcome Shankar, if you find it helpful please rate it so other customers can find the answer too.

and remember in case of doubt rate 5 =)

Felix