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Re: [Qemu-discuss] qemu too slow

From: YuGiOhJCJ Mailing-List
Subject: Re: [Qemu-discuss] qemu too slow
Date: Mon, 25 Aug 2014 11:55:53 +0200

You have right.
I am a long time user of qemu and in the past I was able to use it and it 
worked perfectly.
I am pretty sure that I have not correctly built qemu or one if its 
I don't know why this version I have built is so slow...

That's how I have built it:
$ DIR="qemu-2.1.0"
$ DESTDIR="/tmp/${DIR}"
$ tar xvf ${DIR}.tar.bz2
$ cd ${DIR}
$ ./configure --prefix=/usr --sysconfdir=/etc --localstatedir=/var
$ make
$ make install DESTDIR=${DESTDIR}
$ cd -
$ rm -rfv ${DIR}

But anyway, I have also tried with a version compiled with this SlackBuild:
And again, it does not work.

So, if someone knows how I can find the reason of this strange behavior, please 
tell me.

> it is obviously not the problem that qemu is slow. It has been widely used. 
> if it takes 10 minutes to boot an image, it will be abandon long before you 
> use.
> I suggest your check your qemu install version, better start with 
> virt-manager as it has GUI and super easy to use than remember these long 
> command lines. 
> 2014-08-25
> Scott Zhang
> 发件人:YuGiOhJCJ Mailing-List <address@hidden>
> 发送时间:2014-08-25 12:27
> 主题:[Qemu-discuss] qemu too slow
> 收件人:"qemu-discuss"<address@hidden>
> 抄送:
> Hello, 
> I am using qemu-2.1.0 on a Slackware 14.1 operating system (with Linux 
> 3.15.8). 
> I run qemu like this: 
> $ qemu-img create /tmp/qemu-img 5G 
> $ sudo qemu-system-i386 -boot order=d -hda /tmp/qemu-img -cdrom 
> slackware-14.1-install-dvd.iso -m 1000 -enable-kvm 
> And qemu is very slow. 
> After 10 minutes, nothing is displayed on the screen, I am not able to see 
> the Slackware installer. 
> I have tested with others ISO: 
> $ sudo qemu-system-i386 -boot order=d -hda /tmp/qemu-img -cdrom 
> ubuntu-14.04.1-desktop-i386.iso -m 1000 -enable-kvm 
> $ sudo qemu-system-i386 -boot order=d -hda /tmp/qemu-img -cdrom 
> debian-7.6.0-i386-CD-1.iso -m 1000 -enable-kvm 
> But same issue... 
> Is there a way to understand what is happening? 
> Thank you. 
> Best regards. 

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