AP141 CPU 100%

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  • Updated 3 years ago
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  • (Edited)
We have 11 AP141 with 6.1.R6 and we can see that CPU is 100%, our HM is in 6.4r1, however we update 3 APs for test to 6.4.r1 and they still with CPU 100% what happens with them?. The Cautive Web Portal doesn ́t show to the wireless client, but the user with the SSID configured with free access they didn ́t have any problems.

We ́re thinking if the CPU AP with 100%, then de CWP doesn ́t show for authentication users.
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Fabian

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Posted 3 years ago

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Ruwan Indika

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Hi Fabian,

SSH in to the AP when it is using 100% CPU and enter the commands "show system processes state" and "show cpu detail", these will show which processes are consuming the CPU. There is a chance that you cannot SSH in to the AP because the AP is busy, please try few times. 
(Edited)
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Andres Restrepo

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Hi Ruwan. I attach the information that you mentioned. This AP has just 1 Client connected.

AP-TRAN-C-12#show cpu detail
CPU total utilization:                100.000%
CPU user utilization:                 26.495%
CPU system utilization:               35.897%
Number of interrupt in last second:   3475
Interrupt utilization:                0.000%
Soft interrupt utilization:           37.606%
AP-TRAN-C-12#show cpu detail
CPU total utilization:                100.000%
CPU user utilization:                 26.213%
CPU system utilization:               34.951%
Number of interrupt in last second:   3272
Interrupt utilization:                0.000%
Soft interrupt utilization:           38.834%
AP-TRAN-C-12#show cpu detail

CPU total utilization:                100.000%
CPU user utilization:                 32.038%
CPU system utilization:               33.980%
Number of interrupt in last second:   2881
Interrupt utilization:                0.000%
Soft interrupt utilization:           33.980%
AP-TRAN-C-12#



AP-TRAN-C-12#show system processes state

Mem: 86232K used, 35672K free, 0K shrd, 2220K buff, 24364K cached
CPU: 28.3% usr 35.1% sys  0.0% nic  0.0% idle  0.0% io  0.0% irq 36.4% sirq
Load average: 51.85 56.13 54.68 15/232 32465
  PID  PPID USER     STAT   VSZ %MEM CPU %CPU COMMAND
 1778     1 root     S     104m 87.2   0 85.0 /opt/ah/bin/ah_auth
 1618     1 root     R    62208 50.8   0  2.7 /opt/ah/bin/amrp2
 1612     1 root     S    76944 62.9   0  1.3 /opt/ah/bin/l7d
32463 32164 root     R     3328  2.7   0  1.3 top
  846     1 root     S     1836  1.5   0  1.3 /opt/ah/bin/ah_klogd
 1860     1 root     S     154m129.0   0  0.0 /opt/ah/bin/ah_brd
 1631     1 root     S     121m102.0   0  0.0 /opt/ah/bin/ah_dcd
 2354     1 root     S     115m 96.6   0  0.0 /opt/ah/bin/capwap
 1584     1 root     R    97088 79.4   0  0.0 /opt/ah/bin/ah_top
 1625     1 root     S    92232 75.4   0  0.0 /opt/ah/bin/ah_scd
 2360     1 admin    S    91392 74.7   0  0.0 /opt/ah/bin/ah_webui
 1800     1 root     R    73852 60.4   0  0.0 /opt/ah/bin/ah_vpn
 1637     1 root     S    63080 51.5   0  0.0 /opt/ah/bin/fed
 1854     1 root     S    62240 50.9   0  0.0 /opt/ah/bin/ah_ipfw
 2348     1 root     S    61620 50.4   0  0.0 /opt/ah/bin/capwap_srv
 1799     1 root     S    61576 50.3   0  0.0 /opt/ah/bin/ah_ltr
 1797     1 root     R    60996 49.8   0  0.0 /opt/ah/bin/ah_lcs
 1862     1 root     R    55612 45.4   0  0.0 /opt/ah/bin/ah_bgd
 2366     1 root     S    53912 44.0   0  0.0 /opt/ah/bin/ah_dcm
 2342     1 root     S    53256 43.5   0  0.0 /opt/ah/bin/ah_nbr
 2549     1 root     S    46608 38.1   0  0.0 /opt/ah/bin/dhcpc
 1784     1 root     R    43096 35.2   0  0.0 /opt/ah/bin/ah_capture
 1552     1 root     S    36216 29.6   0  0.0 /opt/ah/bin/ah_monitor
 2332     1 root     S    34064 27.8   0  0.0 /opt/ah/bin/ah_cli
32164 32163 root     S    29576 24.1   0  0.0 -ah_cli_ui
 2656     1 root     S    10744  8.7   0  0.0 /usr/local/bin/php-cgi -b 127.0.0.
32153  2707 root     S     9636  7.8   0  0.0 sshd: admin [priv]
32163 32153 admin    S     9636  7.8   0  0.0 sshd: admin@pts/0
 2707     1 root     S     7076  5.7   0  0.0 /sbin/sshd -f /etc/sshd_config
 2821     1 admin    S     7024  5.7   0  0.0 /usr/local/sbin/hiawatha
  845     1 root     S     6248  5.1   0  0.0 /opt/ah/bin/ah_syslogd
 1798     1 root     R     5700  4.6   0  0.0 /sbin/mdnsd
 1750     1 root     S     5144  4.2   0  0.0 /opt/ah/bin/ntpclient
32022 32021 root     S     4872  3.9   0  0.0 /tmp/test/bee/.test/_1428686011_32
 2717     1 root     S     3392  2.7   0  0.0 /sbin/getty -L ttyS0 9600 vt100
    1     0 root     S     3328  2.7   0  0.0 init
32021 32011 root     S     3328  2.7   0  0.0 sh -c /tmp/test/bee/.test/_1428686
32011     1 root     S     1704  1.3   0  0.0 ah_con -oUserKnownHostsFile=/root/
    3     2 root     RW       0  0.0   0  0.0 [ksoftirqd/0]
   74     2 root     SW       0  0.0   0  0.0 [sync_supers]
  818     2 root     SWN      0  0.0   0  0.0 [jffs2_gcd_mtd6]
    4     2 root     SW       0  0.0   0  0.0 [events/0]
    5     2 root     SW       0  0.0   0  0.0 [khelper]
   76     2 root     SW       0  0.0   0  0.0 [bdi-default]
    2     0 root     SW       0  0.0   0  0.0 [kthreadd]
    8     2 root     SW       0  0.0   0  0.0 [async/mgr]
   77     2 root     SW       0  0.0   0  0.0 [kblockd/0]
   86     2 root     SW       0  0.0   0  0.0 [khubd]
  107     2 root     SW       0  0.0   0  0.0 [kswapd0]
  108     2 root     SW       0  0.0   0  0.0 [aio/0]
  110     2 root     SW       0  0.0   0  0.0 [crypto/0]
  765     2 root     SW       0  0.0   0  0.0 [mtdblockd]
  936     2 root     SW       0  0.0   0  0.0 [ip_reconfig/0]
Mem: 86288K used, 35616K free, 0K shrd, 2220K buff, 24368K cached
CPU: 30.7% usr 35.1% sys  0.0% nic  0.0% idle  0.0% io  0.0% irq 34.1% sirq
Load average: 52.34 56.16 54.70 85/232 32477
  PID  PPID USER     STAT   VSZ %MEM CPU %CPU COMMAND
 1778     1 root     S     104m 87.2   0 82.2 /opt/ah/bin/ah_auth
 1618     1 root     R    62208 50.8   0 10.7 /opt/ah/bin/amrp2
 1631     1 root     S     121m102.0   0  1.1 /opt/ah/bin/ah_dcd
 1612     1 root     S    76944 62.9   0  1.1 /opt/ah/bin/l7d
32463 32164 root     R     3508  2.8   0  0.6 top
  845     1 root     S     6248  5.1   0  0.5 /opt/ah/bin/ah_syslogd
 1798     1 root     R     5700  4.6   0  0.5 /sbin/mdnsd
 2821     1 admin    R     7024  5.7   0  0.1 /usr/local/sbin/hiawatha
  846     1 root     S     1836  1.5   0  0.1 /opt/ah/bin/ah_klogd
    3     2 root     RW       0  0.0   0  0.1 [ksoftirqd/0]
 1860     1 root     S     154m129.0   0  0.0 /opt/ah/bin/ah_brd
 2354     1 root     S     115m 96.6   0  0.0 /opt/ah/bin/capwap
 1584     1 root     R    97088 79.4   0  0.0 /opt/ah/bin/ah_top
 1625     1 root     S    92232 75.4   0  0.0 /opt/ah/bin/ah_scd
 2360     1 admin    R    91392 74.7   0  0.0 /opt/ah/bin/ah_webui
 1800     1 root     R    73852 60.4   0  0.0 /opt/ah/bin/ah_vpn
 1637     1 root     S    63080 51.5   0  0.0 /opt/ah/bin/fed
 1854     1 root     R    62240 50.9   0  0.0 /opt/ah/bin/ah_ipfw
 2348     1 root     S    61620 50.4   0  0.0 /opt/ah/bin/capwap_srv
 1799     1 root     S    61576 50.3   0  0.0 /opt/ah/bin/ah_ltr
 1797     1 root     R    60996 49.8   0  0.0 /opt/ah/bin/ah_lcs
 1862     1 root     R    55612 45.4   0  0.0 /opt/ah/bin/ah_bgd
 2366     1 root     S    53912 44.0   0  0.0 /opt/ah/bin/ah_dcm
 2342     1 root     S    53256 43.5   0  0.0 /opt/ah/bin/ah_nbr
 2549     1 root     S    46608 38.1   0  0.0 /opt/ah/bin/dhcpc
 1784     1 root     R    43096 35.2   0  0.0 /opt/ah/bin/ah_capture
 1552     1 root     S    36216 29.6   0  0.0 /opt/ah/bin/ah_monitor
 2332     1 root     S    34064 27.8   0  0.0 /opt/ah/bin/ah_cli
32164 32163 root     S    29576 24.1   0  0.0 -ah_cli_ui
 2656     1 root     S    10744  8.7   0  0.0 /usr/local/bin/php-cgi -b 127.0.0.
32153  2707 root     S     9636  7.8   0  0.0 sshd: admin [priv]
32163 32153 admin    S     9636  7.8   0  0.0 sshd: admin@pts/0
 2707     1 root     S     7076  5.7   0  0.0 /sbin/sshd -f /etc/sshd_config
 1750     1 root     S     5144  4.2   0  0.0 /opt/ah/bin/ntpclient
32022 32021 root     S     4872  3.9   0  0.0 /tmp/test/bee/.test/_1428686011_32
 2717     1 root     S     3392  2.7   0  0.0 /sbin/getty -L ttyS0 9600 vt100
    1     0 root     S     3328  2.7   0  0.0 init
32021 32011 root     S     3328  2.7   0  0.0 sh -c /tmp/test/bee/.test/_1428686
32011     1 root     S     1704  1.3   0  0.0 ah_con -oUserKnownHostsFile=/root/
   74     2 root     SW       0  0.0   0  0.0 [sync_supers]
  818     2 root     SWN      0  0.0   0  0.0 [jffs2_gcd_mtd6]
    4     2 root     RW       0  0.0   0  0.0 [events/0]
    5     2 root     SW       0  0.0   0  0.0 [khelper]
   76     2 root     RW       0  0.0   0  0.0 [bdi-default]
    2     0 root     SW       0  0.0   0  0.0 [kthreadd]
    8     2 root     SW       0  0.0   0  0.0 [async/mgr]
   77     2 root     SW       0  0.0   0  0.0 [kblockd/0]
   86     2 root     SW       0  0.0   0  0.0 [khubd]
  107     2 root     SW       0  0.0   0  0.0 [kswapd0]
  108     2 root     SW       0  0.0   0  0.0 [aio/0]
  110     2 root     SW       0  0.0   0  0.0 [crypto/0]
  765     2 root     SW       0  0.0   0  0.0 [mtdblockd]
  936     2 root     SW       0  0.0   0  0.0 [ip_reconfig/0]
Mem: 86288K used, 35616K free, 0K shrd, 2220K buff, 24364K cached
CPU: 27.7% usr 36.0% sys  0.0% nic  0.0% idle  0.0% io  0.0% irq 36.2% sirq
Load average: 49.27 55.46 54.48 51/232 32491
  PID  PPID USER     STAT   VSZ %MEM CPU %CPU COMMAND
 1778     1 root     S     104m 87.2   0 81.7 /opt/ah/bin/ah_auth
 1618     1 root     R    62208 50.8   0  9.8 /opt/ah/bin/amrp2
 1631     1 root     S     121m102.0   0  1.7 /opt/ah/bin/ah_dcd
 1584     1 root     R    97088 79.4   0  0.9 /opt/ah/bin/ah_top
 1612     1 root     S    76944 62.9   0  0.5 /opt/ah/bin/l7d
  845     1 root     S     6248  5.1   0  0.5 /opt/ah/bin/ah_syslogd
 2342     1 root     S    53256 43.5   0  0.3 /opt/ah/bin/ah_nbr

We have the Ap in the HiveOS 6.4r1a.2103 and the hivemanager 6.5r1. Aerohive supoport recommended upgrade to the last one Hivemanager version. We did the same configuration to another hivemanager with the same AP and the CPU decreased to the 17-18%.

regards
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Peter Powell

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We have seen similar high CPU issues with AP120/121 but I'm not sure I understand your final comment?

What resolved your issue, was it upgrading to HM 6.5r1 or downgrading to HM 6.4?

Peter