Slow ACE web GUI access

[Bela Mareczky]

Dear Community!

Please help me solving a problem regarding ACE management access. Our ACE web GUI access (not ANM, the own device manager) has become very slow and unresponsive recently (using IE browser). The CLI access and the ACE performance are OK, I think only the HTTP management service is affected. Refer to the exact device parameters below:

ACE-4710-0.5F-K9 appliance

system:    Version A3(2.6)

installed license: ACE-AP-500M-LIC ACE-AP-C-100-LIC ACE-AP-OPT-50-K9

stateful HA using FT group with another identical device at 2 site (#A and #B)

4 user context; each of them active az #A side

average CPU usage ~10-12%

The "show processes" command output shows several httpd process, I think it is not normal :-(

15362      S  b7e726e1            1     -  httpd
15363      S  b7e726e1            1     -  httpd
15364      S  b7e726e1            1     -  httpd
15365      S  b7e726e1            1     -  httpd
15366      S  b7e726e1            1     -  httpd
15367      S  b7e726e1            1     -  httpd
15368      S  b7e726e1            1     -  httpd
15369      S  b7e726e1            1     -  httpd
15370      S  b7e726e1            1     -  httpd
15371      S  b7e726e1            1     -  httpd
15372      S  b7e726e1            1     -  httpd
15373      S  b7e726e1            1     -  httpd
15374      S  b7e726e1            1     -  httpd
15375      S  b7e726e1            1     -  httpd
15376      S  b7e726e1            1     -  httpd
15377      S  b7e726e1            1     -  httpd
15378      S  b7e726e1            1     -  httpd
15379      S  b7e726e1            1     -  httpd
15380      S  b7e726e1            1     -  httpd
15381      S  b7e726e1            1     -  httpd
15382      S  b7e726e1            1     -  httpd
...

Does anybody have any experience about this?

Any help would be greatly appreciated :-)

Thanks and BR

Belabacsi

[venkatkr]

Hi Belabacsi,

This would be a tricky one to resolve over the forum. I think a TAC case is warrented to find a rca. We may need to login to the shell to see what process is hogging the CPU. Number of httpd thread you see if normal. infact one can see more. That said, there are few things you can check.

See if there is any debug level logging (or anything above level 4) in any context. This will create this problem. Also check the uptime of the ACE. If its high, then reload would be a good option.If you can send me a show tech from the Admin context then analyzing that can provide more insight.

Hope this helps

cheers

V.K

[Bela Mareczky]

Dear V.K!

Thanks for Your reply and tips! While reading through the ACE software release notes, I found a solution to this problem. See below:

http://www.cisco.com/en/US/docs/app_ntwk_services/data_center_app_services/ace_appliances/vA3_x/release/note/RACEA3X.html#wp614176

CSCth24858—After running the Device Manager GUI for more than a few months or a year, it cannot deploy a configuration to the ACE. There is no impact on the ACE load balancing. It continues to work. Workaround: Enter the dm reload command from the ACE CLI to restart the Device Manager.

After issue the command mentioned above, the ACE DM works correctly!

Best Regards,

Belabacsi