The Speculative Execution Impact For A 4-Core POWER9 Blackbird Desktop
Written by Michael Larabel in Processors on 12 June 2019. Page 3 of 4. 13 Comments

There was also a measurable hit to the networking performance but generally not as bad as we've seen on Intel CPUs.

There is some slowdowns in code compilation with the default mitigations.

The context switching overhead isn't nearly as bad as what we've seen on affected Intel systems from the various speculative execution vulnerabilities.


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