My workload is some trading performance tests that I've created, which

aren't  going to help you.  If you can tell me how to revert to a 
previous intel-micrcode

package I can try and come up with some narrow isolated test cases where 
the issue

occurs and send you those.

Thanks,

Jim


On 08/30/2018 05:50 AM, Henrique de Moraes Holschuh wrote:
> I am afraid you need to disclose a _lot_ more information about your
> workload for us to even have an idea how you'd hit such an extreme
> slowdown effect...
>
> Also, what mitigation modes have you enabled in the kernel, etc.
>

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https://bugs.launchpad.net/bugs/1789719

Title:
  severe performance issue after intel-microcode update

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