The Performance Hit For A Xeon-Backed Ubuntu Linux VM With L1TF / Foreshadow Patches

Written by Michael Larabel in Software on 20 August 2018. Page 3 of 5. 18 Comments

One of the interesting niche side effects of L1TF/Foreshadow is actually higher FIO performance in some cases due to less locking contention.

In other select I/O cases, this was also the case granted when having the full mitigation where HT gets disabled there is often a performance drop.

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