Re:Intel Publishes Microcode Patches, No Benchmarking or Com...
by GrayShade on Thursday August 23, 2018 @07:47AM
(#17826396)
I assumed the tests were were ran on the new microcode version, as it was released a week before the tests, but it seems that Ubuntu didn't ship that update yet.
Their security advisory says that
> Optimized L1 data cache flushing is available via intel-microcode updates. The updated kernels implement a software fallback cache flushing mechanism for processors that have not received microcode updates.
It looks like the kernel will say "VMX: conditional cache flushes" on the new microcode so according to the Phoronix screenshots, they were running the older version.
Their security advisory says that
> Optimized L1 data cache flushing is available via intel-microcode updates. The updated kernels implement a software fallback cache flushing mechanism for processors that have not received microcode updates.
It looks like the kernel will say "VMX: conditional cache flushes" on the new microcode so according to the Phoronix screenshots, they were running the older version.
Maybe we'll see a new set of benchmarks.