[Qemu-devel] [Bug 1812694] [NEW] qemu-system-x86_64 version 3.0+ is 20 times slower than version 2.12

[CandyMan]

Public bug reported:

version 3.0+ is 20 times slower than version 2.12
I wrote a small 64-bit operating system (SIGMAOS) in which I use the lzma 
decoder. unpacking the file takes 20 times slower than in version 2.12.
You can download it from 
https://drive.google.com/drive/folders/0B_wEiYjzVkC0ZGtkbENENzF1Nms

** Affects: qemu
     Importance: Undecided
         Status: New

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https://bugs.launchpad.net/bugs/1812694

Title:
  qemu-system-x86_64 version 3.0+ is 20 times slower than version 2.12

Status in QEMU:
  New

Bug description:
  version 3.0+ is 20 times slower than version 2.12
  I wrote a small 64-bit operating system (SIGMAOS) in which I use the lzma 
decoder. unpacking the file takes 20 times slower than in version 2.12.
  You can download it from 
https://drive.google.com/drive/folders/0B_wEiYjzVkC0ZGtkbENENzF1Nms

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