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CPU test IPsec, rare result

Hi (excuse my english):
I have accomplished a CPU test conecting 1 for 1 ipsec client and measured de CPU utilization, but since 4 client, CPU utilization decrease rarely. Again same test, again same rare result,

Any ideas

Saludos  


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  • [ QUOTE ]
    Hi (excuse my english):
    I have accomplished a CPU test conecting 1 for 1 ipsec client and measured de CPU utilization when download a bulk fahion (600MB file), but since 4 client, CPU utilization decrease rarely. Again same test, again same rare result,

    Any ideas

    Saludos   

    [/ QUOTE ]  
  • 4 percent?  is that the amount of hte increase or the total usage?  if it is the total usage i would not worry..if that is the percentage increase as long as your cpu does not hang around over 60 or so percent i would not worry about it either.. 

    Owner:  Emmanuel Technology Consulting

    http://etc-md.com

    Former Sophos SG(Astaro) advocate/researcher/Silver Partner

    PfSense w/Suricata, ntopng, 

    Other addons to follow

  • My doubt is:
    If cpu overhead is directly proportional to ipsec client amount transfering bulk data, why my test delivered other result?...
    1 IPsec client----->cpu=61%
    2 IPsec client----->cpu=85%
    3 IPsec client----->cpu=91%
    4 IPsec client----->cpu=93%
    5 IPsec client----->cpu=92%
    6 IPsec client----->cpu=88%
    7 IPsec client----->cpu=83%
    8 IPsec client----->cpu=81%
    the test was realized two times and similar results
    I am wrong???
    Thank!  
  • it is not neccessairly going to be linear since there are other things going in the background...what class of machine is this(cpu/ram..etc)? 

    Owner:  Emmanuel Technology Consulting

    http://etc-md.com

    Former Sophos SG(Astaro) advocate/researcher/Silver Partner

    PfSense w/Suricata, ntopng, 

    Other addons to follow

  • CPU PIII 800, 256 RAM, HDD 20 IDE,2 3com 905tx. Network isolate, 2 catalyst 2950.
    no packet filter, only autopacketfilter option on, left services disabled (ssh, pptp,ike debugging, etc).
    running ipsec service moreover top.

    Thank  
  • what do things look like when ipsec is off?  does the cpu usage drop a whole bunch or does it hover in the 60-90% range?  i am assuming you are using it for firewalling?  how about e-amil filtering/forwarding/anti-virus..etc??

     

    Owner:  Emmanuel Technology Consulting

    http://etc-md.com

    Former Sophos SG(Astaro) advocate/researcher/Silver Partner

    PfSense w/Suricata, ntopng, 

    Other addons to follow

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  • what do things look like when ipsec is off?  does the cpu usage drop a whole bunch or does it hover in the 60-90% range?  i am assuming you are using it for firewalling?  how about e-amil filtering/forwarding/anti-virus..etc??

     

    Owner:  Emmanuel Technology Consulting

    http://etc-md.com

    Former Sophos SG(Astaro) advocate/researcher/Silver Partner

    PfSense w/Suricata, ntopng, 

    Other addons to follow

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