[libvirt] Slow libvirtd startup

[Michal Privoznik]

On 09.01.2013 22:38, Zeeshan Ali (Khattak) wrote:
> Hi,
>   Too lazy to explain again so I'll just c&p conversation I had about
> the issue with Eric on IRC:
> 
> <zeenix> is timeouts on session libvirt (or in general) something new?
> <zeenix> libvirtd startup seems to now take a few seconds so Boxes UI
> is all empty for that amount of time
> <eblake> it's been around for a while; qemu.conf has settings to
> control how long it should take
> <zeenix> unless Boxes is launched before libvirtd timesout
> <eblake> but there is a relatively new patch that makes the libvirtd
> -t actually be useful for qemu:///session
> <zeenix> don't think i ever changed that, at least not recently
> <zeenix> that could be it
> <zeenix> i only saw it happening after i update libvirtd (after a month)
> <eblake> if you're seeing some delays in starting libvirtd, those are
> probably worth fixing
> <zeenix> s/update/recently updated/
> <zeenix> yeah
> <zeenix> i'll try to write a test app
> <zeenix> no need, i can reproduce with virsh :)
> 
> [zeenix at z-laptop virt]$ time virsh list
>  Id    Name                           State
> ----------------------------------------------------
> 
> 
> real	0m6.349s
> user	0m0.016s
> sys	0m0.010s
> [zeenix at z-laptop virt]$ time virsh list
>  Id    Name                           State
> ----------------------------------------------------
> 
> 
> real	0m0.024s
> user	0m0.010s
> sys	0m0.011s
> 
> 

You can try turning debug logs on and hopefully it will let more light
in. To turn them on:

$ cat ~/.config/libvirt/libvirtd.conf
log_level=1
log_outputs="1:file:/tmp/libvirtd.log"

Moreover, if you could upload them somewhere then so we all can take a look.

Michal