[Mageia-dev] Please remove qemu, and qemu-img from Mageia 3.

[Buchan Milne]

----- Original Message -----
> On Sun, 03 Feb 2013 04:16:54 -0500, Pascal Terjan <pterjan at gmail.com>
> wrote:
> 
> > On Sun, Feb 3, 2013 at 9:45 AM, David W. Hodgins
> > <davidwhodgins at gmail.com> wrote:
> >> During testing of updates to qemu, and x11-driver-video-qxl,
> >> it has become very clear that no-one could possibly be using
> >> these packages, as they are so slow, as to be useless.
> >
> > Try loading kvm module and selecting the fast drivers for
> > network/disk/...
> 
> lsmod|grep kvm
> kvm_amd 55516 0
> kvm 413942 1 kvm_amd
> 
> Whether it's loaded or not doesn't seem to make any difference.
> 
> If I add the -enable-kvm option, it fails with ...
> KVM not supported for this target
> No accelerator found!

There isn't much point letting it proceed.

> Checking under htop shows it's clearly cpu bound, using 2 of my 4
> cores.
> 
> The command I used to run qemu was ...
> qemu-system-x86_64 -cdrom "$Iso" -hda mageia"$Arch".qcow2 -boot d -net
> nic
> -net user,net=192.168.10.0/16,host=192.168.10.3 -m 4096 -vga qxl
> with the Iso and Arch variables set appropriately.
> 
> Suggestions for faster disk/network options?

It's significantly easier with libvirtd and virt-manager, but there's not much point if you haven't got hardware virtualisation enabled.

> Given that other people do find it useful, it's obvious there's
> something
> wrong either with the options I'm using (or not using), or my hardware
> or
> bios settings.
> 
> Hopefully it's not the hardware. The cpu is an AMD FX(tm)-4170
> Quad-Core
> Processor, with the following flags shown in /proc/cpuinfo ...
> flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca
> cmov pat pse36 clflush mmx fxsr sse sse2 ht syscall nx mmxext fxsr_opt
> pdpe1gb rdtscp lm constant_tsc rep_good nopl nonstop_tsc extd_apicid
> aperfmperf pni pclmulqdq monitor ssse3 cx16 sse4_1 sse4_2 popcnt aes
> xsave
> avx lahf_lm cmp_legacy svm extapic cr8_legacy abm sse4a misalignsse
> 3dnowprefetch osvw ibs xop skinit wdt lwp fma4 nodeid_msr topoext
> perfctr
> core arat cpb hw_pstate npt lbrv svm_lock nrip_save tsc_scale
> vmcb_clean
> flushbyasid decodeassists pausefilter pfthreshold

svm is the flag in question for basic hardware virtualisation on AMD (vmx for Intel), however many BIOSs ship with hardware virtualisation disabled by default.


Regards,
Buchan