Does anyone have a tip on how to improve #WIndows10 guest performance running via #KVM / #QEMU on a #Linux host featuring an #AMD CPU with integrated graphics? Feels super sluggish, both graphics and sound are struggling.
#Libvirt #Boost

#kvm #networking is making me crazy. Any pros out there that can point me to a solid guide? Goal: one VLAN/bridge with internal communication between by guests only, and a pfsense machine that will firewall between that VLAN and a bridge (or NAT if I have to) to the outside world. I can't even get my guests talking to each other after reviewing both #RHEL and #Debian's docs.

Was nutzt ihr bei der #virtualisierung ?

ich nutze aktuell #kvm über #virtmanager

#umfrage #linux :linux: :servers: :terminal_cursor: :ablobcatrainbow:

WOW, one can rate-limit a virtual network interface!

THIS is software defined networking! 🥰 👍

click https://libvirt.org/formatdomain.html#quality-of-service

…it seems, i could simulate a dial-up modem via POTS 🤣 🍻

#libvirt #Linux #KVM #qemu #virtualisation #virtualization

#Virt-Manager #KVM watching you install and use #VirtualBox still on #linux

Passando a Debian 12, avevo il bisongo di utilizzare un programma di virtualizzazione, in Win. 8.1 usavo #VirtualBox ma non c'era la versione per Debian 12 qualche settimana addietro.
Non mi rimaneva che optare per altra #alternativa scegliendo #QEMU naturalmente con l'interfaccia grafica #KVM
Beh, non è il precedente ma non mi ci trovo affatto male, e poi io lo uso solo per provare qualche OS.
#Linux #UnoLinux

heise+ | 30-Zoll-Monitor von Dell mit USB-C-Dock und LAN-Buchse im Test

Der Ultrasharp U3023E bringt einen USB-Hub mit vielen Ports und LAN-Buchse mit.Mit nur einem Satz Eingabegeräte dient er zwei Rechnern gleichzeitig als Display.

https://www.heise.de/tests/30-Zoll-Monitor-von-Dell-mit-USB-C-Dock-und-LAN-Buchse-im-Test-9284839.html?wt_mc=sm.red.ho.mastodon.mastodon.md_beitraege.md_beitraege

#Dell #KVM #Monitor #news

Tinkered some of the CPU options enabled on my main Windows VM.
CPU idling went from 12% to 3% as reported by the host 😮

I mainly played with these: https://www.qemu.org/docs/master/system/i386/hyperv.html

I couldn’t just blindly enable them with hv-passthrough as the VM would not successfully boot 😞

I settled on this set of options: -cpu max,kvm=on,+hypervisor,+invtsc,l3-cache=on,migratable=no,hv_relaxed,hv_spinlocks=0x1fff,hv_vapic,hv_vpindex,hv_synic,hv_time,hv_stimer,topoext

#linux, #kvm, #windows

How is everybody securing their freshly installed #freebsd #openbsd #linux root servers before connecting it to the pubic internet?

Doing that properly would require configuring the firewall and installing ssh key files, all while network is not up.

I just found out that my providers #kvm web console does not allow pasting text. Sooo, how to get files to the machine then? Create and mount an .iso?

Or do you all allow password ssh authentication for the first five minutes and call it a day?

#QEMU 8.1 Released with New #PipeWire Audio Backend, Multi-Touch Support for the GTK GUI, and Many Improvements for #ARM and #RISCV https://9to5linux.com/qemu-8-1-released-with-new-pipewire-audio-backend-many-improvements

#OpenSource #FreeSoftware #KVM #virtualization

Sistemas operacionais de todas as VM's Linux da Bolha Atualizados

#Ubuntu #ProxMox #KVM

I encountered a bug with the virtio drivers and #FreeBSD, which could have affected the network performance of BSD Cafe.

I've written a short article about what happened and how I resolved it.

https://it-notes.dragas.net/2023/08/14/boosting-network-performance-in-freebsds-vnet-jails/

#NetworkPerformance #BugFix #FreeBSD #Infrastructure #BSDCafe #BSDCafeUpdates #Virtio #KVM #Proxmox #IT #SysAdmin

Anybody know a good Thunderbolt 3 KVM switch that can be used to control multiple workstations with one single Studio Display / keyboard / mouse? Does that even exist? This used to be fairly straightforward back in the day but with TB3 / USB-C this seems to be either impossible or very expensive? #kvm #StudioDisplay #Thunderbolt3

Can anyone recommend a #KVM (really just need the V portion 😂) that will allow me to share / switch a 4K display that connects via USB-C?

Currently the display is connected full-time to a #Mac mini, but sometimes I need to switch it to my work laptop and I’d rather not be unplugging / plugging in cables all the time.

Samsung annuncia i monitor VA con switch KVM
#Samsung #monitor #display #KVM #switch
https://guruhitech.com/samsung-annuncia-i-monitor-va-con-switch-kvm/

How we are migrating (many of) our servers from #Linux to #FreeBSD - Part 3 - #Proxmox to FreeBSD

https://it-notes.dragas.net/2023/03/14/how-we-are-migrating-many-of-our-servers-from-linux-to-freebsd-part-3/

#ITNotes #SysAdmin #Virtualization #Debian #KVM #bhyve #BSDCafe #Migration #IT

I'm so ashamed of myself. I suspect my KVM switch was causing the random double-clicking, but even so... there was no need for me to tear out the cable and then stomp on it. Twice!

Oh well, this is how I overcome my shopping qualms and buy new things. #shopping #KVM #mouse

Broadly speaking, you're going to run #Linux on your #mainframe on z/VM or #KVM (living on a tiny Linux install itself on the LPAR).

z/VM has tons of knobs and is incredibly rich with features going back decades, but KVM integrates seamlessly into all the other stuff you may be using that supports KVM (all hail libvirt!). So it's always nice to read through the quarterly updates to KVM that help improve that experience http://kvmonz.blogspot.com/2023/07/kvm-in-linux-distributions-in-2q-2023.html ✨

So, jetzt sogar eine Alternative für Mouse without Borders gefunden mit Barrier (https://github.com/debauchee/barrier). Also eine Tastatur/Maus einfach auf dem "fremden" Bildschirm des zweiten Systems mitnutzen, indem man über die Bildschirmgrenze huscht.

Während ersteres nur Windows-zu-Windows geht, klappt letzteres auch Cross-OS.

#kvm #barrier #MouseWithoutBorders

Fun find with a USB-DVI KVM I just got. The manual says the "double-tap scroll lock to switch" feature only works on Windows... it turns out that, instead of listening for the scroll lock KEY, it's listening for the scroll lock LED... and macs have no Scroll Lock while modern X11 leaves it unbound by default. Probably a hack for regional keyboard layout variations and keymap customization. On the plus side, the KVM can be scripted using `xset`. :) #kvm #linux #keyboard #cool