QEMU performance? Post: 302930185

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Special Forums UNIX and Linux Applications Virtualization and Cloud Computing QEMU performance? Post 302930185 by sea on Wednesday 31st of December 2014 05:12:34 AM

12-31-2014

Registered User

QEMU performance?

Heyas

So, i like doing custom a LiveImage of my OS.
Using Redhats kickstart/livecd-creator method.

Anyway, so i would like to test the liveimages...
AND also, i WOULD like to install FreeBSD, Solaris, or whatever, onto a Virtual Machine.

I used to use Oracles Virtualbox, but eversince i'm booting with SecureBoot enabled, i'm no longer able to start it, so i had to change to QEMU.

Now, to just 'test' if the fresh generated iso is 'working' or not, QEMU is just fine.
But if i ever want to actualy do in QEMU, like, switching desktop, or changing the folder in pcmanfm inside QEMU, it needs patience out of this world...

I'm running my ISO's like this:

Code:

#!/bin/bash
# isotest
# Description:	Simply boots an iso file with qemu.
# ------------------------------------------------------
#
#	Variables
#
	DEFAULT_ARCH=x86_64
	DEFAULT_ARCH=$(uname -m)
	DEFAULT_RAM=$(( 4 * 1024 ))
	DEFAULT_CORES=4
	DEFAULT_VGA=vmware
	DEFAULT_FORMAT=qcow2
	DEFAULT_SIZE=5G
	DEFAULT_IMAGE_DIR=$HOME/Virtual_Machine_Images
	DEFAULT_IMAGE_FILE=isotest.img
#
#	Display & Action
#
	qemu-system-$DEFAULT_ARCH \
		-smp $DEFAULT_CORES \
		-m $DEFAULT_RAM \
		-cdrom "$1"

And to 'install' or run an intalled image i execute:

Code:

#!/bin/bash
# distrotest
# Description:	Simply boots an OS file with qemu.
# ------------------------------------------------------
#
#	Variables
#
	DEFAULT_ARCH=x86_64
	DEFAULT_ARCH=$(uname -m)
	DEFAULT_RAM=$(( 4 * 1024 ))
	DEFAULT_CORES=4
	DEFAULT_VGA=vmware
	DEFAULT_FORMAT=qcow2
	DEFAULT_SIZE=5G
	DEFAULT_IMAGE_DIR=$HOME/Virtual_Machine_Images
	DEFAULT_IMAGE_FILE=distrotest.img
#
#	Functions
#
	DEFAULT_IMAGE="$DEFAULT_IMAGE_DIR/$DEFAULT_IMAGE_FILE"
	[[ -f "$1" ]] || exit 1
	if [[ ! -f "$DEFAULT_IMAGE" ]]
	then	# We just need an image to boot an iso, this can be quite small.
		qemu-img create -f "$DEFAULT_FORMAT" "$DEFAULT_IMAGE" $DEFAULT_SIZE
	fi
#
#	Display & Action
#
	qemu-system-$DEFAULT_ARCH \
		-smp $DEFAULT_CORES \
		-m $DEFAULT_RAM \
		-cdrom "$1" \
		-hda "$DEFAULT_IMAGE"
# 		-full-screen \

As you see, i'm quite, sharing?, with my hardware for qemu...
4 Cores and 4 GB of ram, but booting an ISO (same for installed) takes up to ~7mins, when with O-VB it was as low as ~1min -- using 768mb ram and 70% of 1 core....

Doing a mouse click and wait for like 20 secs for ANYTHING to happen, is just annoying.

Any ideas or advices please?
Thank you in advance

sea

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LEARN ABOUT DEBIAN

vmware2libvirt

VMWARE2LIBVIRT:(1)					  System Administration Utilities					VMWARE2LIBVIRT:(1)

NAME

       vmware2libvirt - vmware vmx to libvirt xml converter

SYNOPSIS

       vmware2libvirt [-q] -f FILE

DESCRIPTION

       This program outputs a libvirt xml file based on an existing vmware vmx file

OPTIONS

       --version
	      show program's version number and exit

       -h, --help
	      show this help message and exit

       -q, --qemu
	      use qemu instead of kvm

       -f FILE, --file=FILE
	      vmware vmx file to convert

USAGE

       To start using a pre-existing vmware image with libvirt, you simply copy the vmware .vmx file and .vmdk file to a new directory. Then do:

	 vmware2libvirt -f ./file.vmx > file.xml
	 virsh -c qemu:///system define file.xml

       At this point, your vmware image should be available to libvirt.

CAVEATS

       vmware2libvirt currently will use the first scsi disk if found, otherwise the first ide disk. It will also use the first ethernet interface
       found.

SEE ALSO

	virsh(1), kvm(1), qemu(1)

AUTHOR

       vmware2libvirt is (C) 2008, Canonical Ltd.

       This manual page was originally written by Jamie Strandboge <jamie@canonical.com>

vmware2libvirt: 0.1						   February 2008						VMWARE2LIBVIRT:(1)