this post was submitted on 26 Sep 2021
14 points (100.0% liked)
Privacy
31894 readers
592 users here now
A place to discuss privacy and freedom in the digital world.
Privacy has become a very important issue in modern society, with companies and governments constantly abusing their power, more and more people are waking up to the importance of digital privacy.
In this community everyone is welcome to post links and discuss topics related to privacy.
Some Rules
- Posting a link to a website containing tracking isn't great, if contents of the website are behind a paywall maybe copy them into the post
- Don't promote proprietary software
- Try to keep things on topic
- If you have a question, please try searching for previous discussions, maybe it has already been answered
- Reposts are fine, but should have at least a couple of weeks in between so that the post can reach a new audience
- Be nice :)
Related communities
Chat rooms
-
[Matrix/Element]Dead
much thanks to @gary_host_laptop for the logo design :)
founded 5 years ago
MODERATORS
you are viewing a single comment's thread
view the rest of the comments
view the rest of the comments
I'm assuming this is because Qubes OS allocates RAM independently for each VM, regardless of how much the VM is actually using? Does Xen not have the ability to use a pool of RAM and just overlap the empty space? I was under the assumption that enterprise level hypervisors could do that. Even if you have five VMs, if four of them are idle, in theory only a little more than one OS's worth of RAM should actually be filled with active data.
Qubes does not only use compartmentalization for stuff like browsing, if I remember correctly your /home folder is also a separate VM and I think there was something similar to this happening too, so I assume there's always at least like 3 or 4 VMs running. Either way AFAIK you still need that amount, regardless of if there's an alternative, which makes it non usable for poor people.
Fair enough. I said this in another comment already, but for this reason I really wish there was a viable desktop OS that uses a microkernel, since such an OS can be much more easily designed do secure compartmentalization without the need for VMs or duplicate parallel processes in general. A micorkernel OS still has more computational overhead than one monolithic kernel, but would be much more resource frugal than multiple VMs.