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[Qemu-devel] [Bug 855633] Re: guest boots up too slowly


From: Avi Kivity
Subject: [Qemu-devel] [Bug 855633] Re: guest boots up too slowly
Date: Thu, 22 Sep 2011 09:24:34 -0000

Could not reproduce - RHEL 6 boots up snappily for me.

Is it an overall slowdown, or is a specific part of the boot slower?
(may need to remove 'rhgb' and 'quiet' from the boot command line).

Make sure that 'info kvm' returns 'enabled'.

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https://bugs.launchpad.net/bugs/855633

Title:
  guest boots up too slowly

Status in QEMU:
  New

Bug description:
  qemu.git commit: 6cc7686696f73ae87cadef4450776a488b0e0c8b
  kvm.git commit: 7f914d61cd2156e34a7852462bb4932621f33a34

  It will costs about 180 seconds to booting up a rhel6 guest. But when
  I use qemu-kvm.git with commit a040d28b, the rhel6 guest can boot up
  in about 50 seconds.  I did the comparative test in the same box and
  using the same command line to create a guest  BTW, I tested qemu-
  kvm.git not qemu.git before kernel.org was down.

  Reproduce steps:
  ----------------
  1. to create a guest: qemu-system-x86_64  -m 1024 -smp 2 /root/rhel6.img
  (It maybe cost about 180 seconds to boot up.)

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