4 ms·

Is anything know about how much performance will be lost?

• NicoJuicy 7y ago
  https://twitter.com/damageboy/status/1194751035136450560?s=19 https://twitter.com/damageboy/status/1194751035136450560?s=1... Up to 20% for Array.Sort
  • asveikau 7y ago
    Why would Array.Sort have locking in need of elision? [I'm reminded of the old Java "Vector" or "StringBuffer" that put a lock around every operation "because thread safety is good" which had high cost for single threaded usage. But this is likely not what this is about.]
    • NicoJuicy 7y ago
      I was just quoting the source :)
    • saagarjha 7y ago
      It’s a different bug that requires extra padding for branching instructions.
• makomk 7y ago
  Well, judging from the Phoronix benchmarks, performance is worse than just outright disabling TSX in its entirety: https://www.phoronix.com/scan.php?page=article&item=zombieload-v2-taa&num=1 https://www.phoronix.com/scan.php?page=article&item=zombielo... (Though they show basically no performance benefit from TSX, so...)