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On Sun, Jan 07, 2018 at 04:59:44AM -0800, Fabrizio Romano Genovese wrote:
> Ok, I dug a bit deeper into this. It doesn't look like a problem of how much 
> memory I give to VMs. Essentially, my QubesOS boots in two different ways:
> - When QubesOS is happy, it starts in ~1 min (yup, starting up all the VMs 
> still takes a while). The overall system is very reactive, for instance if I 
> type qvm-ls I obtain some output straight away. Moreover, if I start a VM the 
> notification "VM blabla is starting" is displayed immediately.
> - When QubesOS is not happy, it starts in ~3mins. The overall system is very 
> slow, qvm-ls takes 3-4 seconds to display output, and starting a VM takes up 
> to 20 seconds. Even the notification "VM blabla is starting" is displayed 4-5 
> seconds after the command is issued. Moreover the battery is drained much 
> much quicker (200% quicker give or take).
> What makes Qubes happy or not happy to start seems to be completely random. I 
> have a slight suspect that this may depend on booting the laptop while 
> plugged/unplugged, but I cannot confirm this.
> Essentially my Qubes experience atm can be exemplified as follows: "At boot, 
> throw a coin. If it's heads then it's fine, otherwise it's fubar". Any 
> suggestion (or report of similar behavior) would be greatly appreciated!

Is it Dell Latitute by a chance? I have very similar problem on such
system, regardless of Qubes version: when it is on AC power, performance
is normal, but on battery it is significantly slower. Some workaround is
to change CPU scaling governor, by executing in dom0:

    xenpm set-scaling-governor performance

- -- 
Best Regards,
Marek Marczykowski-Górecki
Invisible Things Lab
A: Because it messes up the order in which people normally read text.
Q: Why is top-posting such a bad thing?


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