[Bug 1896754] [NEW] Performance degradation for WinXP boot time after b55f54bc

[Maskim Bakulin]

Public bug reported:

Qemu 5.1 loads Windows XP in TCG mode 5-6 times slower (~2 minutes) than
4.2 (25 seconds), I git bisected it, and it appears that commit
b55f54bc965607c45b5010a107a792ba333ba654 causes this issue. Probably
similar to an older fixed bug
https://bugs.launchpad.net/qemu/+bug/1672383

Command line is trivial: qemu-system-x86_64 -nodefaults -vga std -m
4096M -hda WinXP.qcow2 -monitor stdio -snapshot

** Affects: qemu
     Importance: Undecided
         Status: New

-- 
You received this bug notification because you are a member of qemu-
devel-ml, which is subscribed to QEMU.
https://bugs.launchpad.net/bugs/1896754

Title:
  Performance degradation for WinXP boot time after b55f54bc

Status in QEMU:
  New

Bug description:
  Qemu 5.1 loads Windows XP in TCG mode 5-6 times slower (~2 minutes)
  than 4.2 (25 seconds), I git bisected it, and it appears that commit
  b55f54bc965607c45b5010a107a792ba333ba654 causes this issue. Probably
  similar to an older fixed bug
  https://bugs.launchpad.net/qemu/+bug/1672383

  Command line is trivial: qemu-system-x86_64 -nodefaults -vga std -m
  4096M -hda WinXP.qcow2 -monitor stdio -snapshot

To manage notifications about this bug go to:
https://bugs.launchpad.net/qemu/+bug/1896754/+subscriptions