# CPU load of CI server

**URL:** https://www.finalbuilder.com/forums/t/cpu-load-of-ci-server/5983
**Category:** Bugs
**Created:** [July 13, 2015, 6:14am UTC](https://www.finalbuilder.com/forums/t/cpu-load-of-ci-server/5983 "2015-07-13T06:14:29Z")
**Posts on this page:** 3
**Page:** 1

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### Author: ![kay.zumbusch](https://www.finalbuilder.com/forums/letter_avatar_proxy/v4/letter/k/cc9497/32.png) [@kay.zumbusch](https://www.finalbuilder.com/forums/u/kay.zumbusch)
#### Post date: [July 13, 2015, 6:14am UTC](https://www.finalbuilder.com/forums/t/cpu-load-of-ci-server/5983/1 "2015-07-13T06:14:29Z")

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Hi,  
  
our dedicated Continua CI server is hosted on VMware ESXi seems to act very strangely. Although nobody used the CI system today and we did no checkin to any registered Subversion respository the CI system regularly utilizes 100% of the CPU core of the virtual machine. I attached a screenshot of the performance monitoring of VMware vSphere web client.  
  
Our environment:  
Hypervisor: VMware ESXi 5.5  
Operating System: Windows Server 2012 R2 Standard  
Continua CI: 1.5.1.49  
Continua CI Agents: local agent, two online remote agents, one offline remote agent  
  
Do you have any idea what might cause these CPU peaks?  
  
Regards  
  
Kay Zumbusch

 ![__35037__ 0__cpu-load.png](https://www.finalbuilder.com/forums/uploads/default/original/2X/4/40e56c9a07f394593a5b922dded31077e1093d4e.png)

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### Author: ![Sparky](https://www.finalbuilder.com/forums/user_avatar/www.finalbuilder.com/sparky/32/10_2.png) [@Sparky](https://www.finalbuilder.com/forums/u/Sparky)
#### Post date: [July 14, 2015, 3:11am UTC](https://www.finalbuilder.com/forums/t/cpu-load-of-ci-server/5983/2 "2015-07-14T03:11:33Z")

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Hi Kay,  
  
Is the server configured with LDAP (or Mixed) authentication mode? Versions of Continua prior to 1.6 ran an LDAP synchronisation task every 30 minutes. This was processor intensive, especially with large domains and has now been rewritten to improve performance. If the synchronisation takes around 10 minutes to run, this would be consistent with the CPU peaks you are seeing. I’m quite sure that we don’t have any other processes which run at this interval.  
  
I note that you are running a old 1.5 version of Continua from December last year. We recommend that you upgrade as you’ll find numerous improvements in performance in updates released since then, including the update to LDAP synchronisation.&nbsp;  
  
If you still see these high CPU peaks after upgrading, first check the Resource Monitor at the peak times to check that it is indeed the Continua service which is causing this. Then [enable debug logging](http://wiki.finalbuilder.com/display/continua/Debug+Logging), and send the log to [support@finalbuilder.com](mailto:support@finalbuilder.com) after the server has been running through one of these CPU peaks. Also include details of the timings of these peaks.

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### Author: ![kay.zumbusch](https://www.finalbuilder.com/forums/letter_avatar_proxy/v4/letter/k/cc9497/32.png) [@kay.zumbusch](https://www.finalbuilder.com/forums/u/kay.zumbusch)
#### Post date: [July 14, 2015, 8:54am UTC](https://www.finalbuilder.com/forums/t/cpu-load-of-ci-server/5983/3 "2015-07-14T08:54:39Z")

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Hi Dave,  
  
we indeed connect to our Active Directory using LDAP although our AD is not that large. Thanks for the hint. The update to the most recent version of 1.6 is already planned. I’ll get back to you if the update does not help.  
  
Regards  
  
Kay Zumbusch