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High CPU load on virtual UTM9

We have a virtual UTM 9 used as a WAF in front of a relatively high trafic website (100k to 400k visits per day).

The UTM9 is processing the https and act as a WAF for the website.

Our UTM is in v9.4 because we had to downgrade it from 9.5 due to a bug on the network interface.

During load and performance testing, we noted a very high CPU load on the virtual machine hosting the UTM9, with performance significantly slowing down. It seems the UTM9 is reaching its limits and become a bootleneck.

We tried to get sizing guidelines from Sophos, no clear answer (if any), and we couldn't find anywhere a précise documentation on the subject for the virtual UTM.

Has anyone experienced a similar situation ?

Any recommandation on sizing guidelines ?



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  • I remember that you have VMware, but hopefully you can use Olivier's advice.

    When you run top from the command line, what are the typical values in the Cpu(s) line?

    Cheers - Bob

     
    Sophos UTM Community Moderator
    Sophos Certified Architect - UTM
    Sophos Certified Engineer - XG
    Gold Solution Partner since 2005
    MediaSoft, Inc. USA
Reply
  • I remember that you have VMware, but hopefully you can use Olivier's advice.

    When you run top from the command line, what are the typical values in the Cpu(s) line?

    Cheers - Bob

     
    Sophos UTM Community Moderator
    Sophos Certified Architect - UTM
    Sophos Certified Engineer - XG
    Gold Solution Partner since 2005
    MediaSoft, Inc. USA
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