3 ms·

Is there a place where I can find how much performance my Haswell CPU has lost due to all of these 'fixes'?

• vectorEQ 7y ago
  it depends on the kind of applications / loads you are performing, so really it's not possible to put a static value to that. best is just to test it with some benchmarks yourself to be sure how it impacts you. some people report losses of like 20%, others 1 or 2%...
• jotm 7y ago
  Haswell doesn't have this feature
  • saagarjha 7y ago
    I believe Haswell does have Hardware Lock Elision, but it was disabled by a microcode update.
    • jdsully 7y ago
      It was disabled because it didn’t work. So I guess it’s in the eye of the beholder.
• diffeomorphism 7y ago
  For example from March 2019: https://www.phoronix.com/scan.php?page=article&item=spec-melt-8way&num=1 https://www.phoronix.com/scan.php?page=article&item=spec-mel... I think there are some further in-depth benchmarks with multiple generations of Intel and AMD, but can't find the link.
• deleted 7y ago
  [deleted]
• saati 7y ago
  The Haswell TSX was found to be unsound and disabled not long after it came out.