[ovirt-users] heavy webadmin

[Brett I. Holcomb]

On Tue, 2016-04-05 at 10:04 -0400, Alexander Wels wrote:
> On Tuesday, April 05, 2016 03:58:37 PM Nicolas Ecarnot wrote:
> > Le 05/04/2016 14:30, Alexander Wels a écrit :
> > > > > > > > 2. If you are running hosted engine, make sure you have
> > > > > > > > enough
> > > > > > > > entropy, the
> > > > > > > > login page generates a couple of tokens using secure
> > > > > > > > random,
> > > > > > > > which
> > > > > > > > eats away
> > > > > > > > at your entropy budget heavily and since hosted engine
> > > > > > > > is a VM
> > > > > > > > it is
> > > > > > > > possible
> > > > > > > > that you don't have enough entropy. You can check your
> > > > > > > > entropy
> > > > > > > > level
> > > > > > > > with
> > > > > > > > this:
> > > > > > > > 
> > > > > > > > cat /proc/sys/kernel/random/entropy_avail
> > > > > > 
> > > > > > 159 is horrible to be honest, that is most likely the cause
> > > > > > of your
> > > > > > problems. Anything below around 300 is bad.
> > 
> > Alex,
> > 
> > I checked that on my engines, and the entropy is around 120.
> > But those are NOT hosted.
> > 
> > Can you confirm this lack of entropy enduces no slowness on
> > dedicated
> > engines?
> 
> Lack of entropy is what causes super slow login. I creates some
> tokens on 
> login that use up entropy. However once you have logged in it re-uses 
> the 
> token and the entropy should not be an issue after that for the most
> part.
> 
> He didn't actually say but I suspect that after the initial minutes
> wait for 
> the login, it was not THAT bad after that. Not like what we are
> seeing with 
> your system.
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> Users at ovirt.org
For me once I was on the admin login page things went much faster.  Now
that I have haveged on the Engine VM the change from the welcome page
to the admin login page is almost instantaneous. 
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