Qubes and ram

[sgshsjj...@gmail.com]

How does Qubes uses memory? I use about 20VMs (AppVMs, NetVMs, ProxyVMs, etc) and i don't see any difference between 8 and 16 gigs on laptop, does it make sense to add more memory?

Thanks.

[Zrubi]

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there is no such thing as too much RAM. :)

I'm using ~12 online VMs and usually hitting memory limits of my 8Gb.

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Zrubi
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[Ted Brenner]

I have 8 GB of RAM and I feel like I can't have more than 3 AppVMs open (with Chrome) before I hit a limit and can't open up anymore appVMs. Could be my configuration in terms of what minimal amount of memory I assign though I'm using everything as it comes right out of the box. If someone can get 12, I must be doing something wrong.

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Sent from my Desktop

[Illidan Pornrage]

On 02/22/2017 04:09 PM, Ted Brenner wrote:
> I have 8 GB of RAM and I feel like I can't have more than 3 AppVMs open
> (with Chrome) before I hit a limit and can't open up anymore appVMs. Could
> be my configuration in terms of what minimal amount of memory I assign
> though I'm using everything as it comes right out of the box. If someone
> can get 12, I must be doing something wrong.
>
> On Wed, Feb 22, 2017 at 4:55 AM, Zrubi <ma...@zrubi.hu> wrote:
>
> On 02/22/2017 11:36 AM, sgshsjj...@gmail.com wrote:
>>>> How does Qubes uses memory? I use about 20VMs (AppVMs, NetVMs,
>>>> ProxyVMs, etc) and i don't see any difference between 8 and 16 gigs
>>>> on laptop, does it make sense to add more memory?
>
> there is no such thing as too much RAM. :)
>
> I'm using ~12 online VMs and usually hitting memory limits of my 8Gb.
>
>>

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>> For more options, visit https://groups.google.com/d/optout.
>>
>
>
>

I actually had approximately this behaviour with 4GB of Ram.
With 8GB Ram I can at least get 3 Firefox + sysvms + one set whonixvms +
a bunch of F24-minimal running.
When I had only 4GB I shrank down the netvms. I installed
network-manager + nm applets + nic firmware in the minimal template and
set the netvm,firewallvm,usbvm to the minimal template. Take a look at
the wiki which packages exactly are required for a netvm.
I also decrease the default maximum ram for appvms as necessary.
Browsers cant spam ram they dont have.

Illidan

[Zrubi]

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On 02/22/2017 04:09 PM, Ted Brenner wrote:

> I have 8 GB of RAM and I feel like I can't have more than 3 AppVMs
> open (with Chrome) before I hit a limit and can't open up anymore
> appVMs. Could be my configuration in terms of what minimal amount
> of memory I assign though I'm using everything as it comes right
> out of the box. If someone can get 12, I must be doing something
> wrong.

Well that 12 online VM are distrbuted something like:

sys-firewall
WiFi
Ethernet
sys-usb
2 different VPN proxy VM

those are with only 300Mb initial 512Mb max memory.

the remaining ~6 AppVMs are starting with 512Mb to 2048Mb max.

Of course all depend on what you are suing in those VM's. But I
usually have at least 1 browser +terminals +mail clients open.

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Zrubi
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[Holger Levsen]

Hi,

both in qubes-manager as well as in the i3 status bar, Qubes only displays
the allocated memory, which pretty much always is 95% of the available memory,
so I came up with this one-liner to calculate the really used memory:

echo $(((`(for VM in $(xl list|egrep -v "(Name|dom0)"|cut -d " " -f1) ; do /usr/lib/qubes/qrexec-client -d $VM user:"/usr/bin/vmstat -s -S K" -t -T|grep "used memory"|cut -d "K" -f1 ; done)|xargs echo|sed "s# #+#g#"`)/1024))MB used

it's still (maybe) a bit ugly for two reasons:
- I don't use /usr/bin/bc cause I don't want to have this installed in dom0
- instead of running /usr/bin/vmstat I would rather like to access
(think /usr/bin/cat) /proc/meminfo of the VMs from dom0, but I don't know
how to do this yet.


--
cheers,
Holger

[Tim W]

On Wednesday, February 22, 2017 at 5:36:33 AM UTC-5, sgshsjj...@gmail.com wrote:
> How does Qubes uses memory? I use about 20VMs (AppVMs, NetVMs, ProxyVMs, etc) and i don't see any difference between 8 and 16 gigs on laptop, does it make sense to add more memory?
>
> Thanks.

Its very use specific as its how you use the vms ( the apps and how you use them) If you have 4 app-vm (+ the normal sys-vm) running a internet browser and each has 20-50 heavy mem tabs open you could max out even 16gig of ram.

Then again you could have 20+ appvms open running a single app each such as filemanger or some other low mem app like keepassx etc.

[Holger Levsen]

On Wed, Feb 22, 2017 at 05:37:17PM +0000, Holger Levsen wrote:
> echo $(((`(for VM in $(xl list|egrep -v "(Name|dom0)"|cut -d " " -f1) ; do /usr/lib/qubes/qrexec-client -d $VM user:"/usr/bin/vmstat -s -S K" -t -T|grep "used memory"|cut -d "K" -f1 ; done)|xargs echo|sed "s# #+#g#"`)/1024))MB used

misses the used memory in dom0, so better:

echo $(((`(for VM in $(xl list|egrep -v "(Name|dom0)"|cut -d " " -f1) ; do /usr/lib/qubes/qrexec-client -d $VM user:"/usr/bin/vmstat -s -S K" -t -T|grep "used memory"|cut -d "K" -f1 ; done)|xargs echo $(vmstat -s -S K|grep "used memory"|cut -d "K" -f1)|sed "s# #+#g#"`)/1024))

which is better done like this:

echo $(((`( vmstat -s -S K ; for VM in $(xl list|egrep -v "(Name|dom0)"|cut -d " " -f1) ; do qvm-run $VM -p "/usr/bin/vmstat -s -S K" ; done ) | grep "used memory" | cut -d "K" -f1 | xargs echo | sed "s# #+#g#"`)/1024))

which is also easier to understand I think ;) Essentially it runs vmstat
everywhere and adds up the numbers for "used memory", that's all.

And, it still should better read /proc/meminfo…


--
cheers,
Holger

[raah...@gmail.com]

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>
>
>
> For more options, visit https://groups.google.com/d/optout.
>
>
>
>
>
> --
>
> Sent from my Desktop

haha no u doing it right, I saw 20 vms for 8gb and was like what!>! Depends on what you using your vms for. whats running on them etc... in other words you actually use your pc for more then just looking at it.

on my 8g i can only have like 6 or 7 vms running, including sys-vms. on the 16 gb machine about double that. before I notice slowdown. or dom 0 ram going down.

[raah...@gmail.com]

ya just browsing can eat all 8gb of ram nowadays haha.

[Ted Brenner]

I added another 8 GB so now I'm at 16 total and I've not run into any issues yet. knock on wood. I think the max I've had is 9 VMs including the sys-net, sys-firewall and sys-whonix. One being a Windows HVM. I plan to optimize my setup at some point but right now there's no rush.

[turb...@gmail.com]

среда, 22 февраля 2017 г., 13:36:33 UTC+3 пользователь sgshsjj...@gmail.com написал:

> How does Qubes uses memory? I use about 20VMs (AppVMs, NetVMs, ProxyVMs, etc) and i don't see any difference between 8 and 16 gigs on laptop, does it make sense to add more memory?
>
> Thanks.

Lets calculate :

sys-net
sys-i2p
sys-firewall
sys-whonix
sys-vpn-cli
sys-vpn-gui
sys-vpn-bitmask
torvm
fedora-24
debian-9
whonix-ws
whonix-gw
whonix-ws-i2p
whonix-gw-i2p
archlinux
xenial
kali
blackarch
fedora-24-tor
untrusted
personal
work
vault
anon-whonix
anon-web
anon-i2p
win7
template-builder (?)
signal or martus (?)

It's only by default : ~30 VMs