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Hello, Proxmox users ! we experience the same problems on windows 2016, windows 2019 and windows 2022 guests. At some point in time in Jan 2022 after windows updates, this "windows won't boot" behaviour stated to show up. It happend last time yesterday on proxmox-ve: 7.3-1 (running kernel...

Just a note, because I had a similar problem : should your VM use a VirtIO disk instead of SATA, you must also load the VirtIO drivers from command prompt, before attempting the "bootrec" commands in repair mode : drvload f:\viostor\2k12R2\amd64\viostor.inf

I have a similar "L3 cache" output between host and VM. But I don't think it can explain our cpu performance issues. On top of that, our benchmarks revealed issues when testing directly on the host, so I would still blame the old RHEL kernel+patches.

It is very interesting to us, too.

Although it is not exactly the same hardware, your are perhaps hitting this proxmox-openvz-kernel bug (http://forum.proxmox.com/threads/14800-pve-%28host%29-vs-ubuntu-performance), where it basically runs as if the hyperthreaded cores were disabled. If you are still able to carry out some quick...

I suppose that with the balance-rr to 802.3 ad scenario, the switch computes (with its internal algorithm) a different hash between the two input ports (even if the MAC address of the input bond shall be the same), as a consequence, the output port is different, so you have double bandwidth...

It will balance TCP connections (hash with IP addresses and port numbers), so iperf -P <N> where N is >= 2 will show better performance, hence the sample below, with two 1Gb/s ethernet bondings on an HP switch with LACP : root@proxmox:~# iperf -c nas -P 4...

Ok I found the problem, there was another switch involved (a netgear GS108E) that was dropping SYN packets sent by rpcinfo -p. i.e. http://www.developpez.net/forums/d1218869/systemes/linux/reseau/etrange-comportement-rpcinfo/ i.e...

Sorry to excave an old post, but with fresh install of proxmox 3.1 I can reproduce this problem everytime between some Dell workstations, and a QNAP TS-469L NAS or any other linux servers/VM on the local network. I tested a dell optiplex 745 with broadcom network chipset, and a dell T3600 with...

That is normal behaviour. LACP is designed to _balance_ bandwidth between the links, but the maximum throughput between two clients is 1Gb/s. (What is a "client" depend on the method used to compute which link should be used in function of the layer 2/3/4 adresses ; e.g. with layer 2 you...

If that can be of any interest, I post my lacp bonding configuration over 4 ethernet cards. The switch MUST also be configured as LACP on theses ports. With layer 3/4 xmit hash policy it might interestingly balance multiple tcp connections between the same hosts. auto lo iface lo inet...

BTW Dell R720 are great but they suffer from performance problems with current pve kernels (see there http://forum.proxmox.com/threads/14800-pve-%28host%29-vs-ubuntu-performance). just saying ...

Thanks, note that there is a "typo" in your git commit ---> s/parallel/parport/

I re-plugged the test platform.. the virt-manager kvm command-line is the folllowing : /usr/bin/kvm -S -M pc-1.0 -enable-kvm -m 2048 -smp 2,sockets=2,cores=1,threads=1 -name dumb -uuid 0c7cff3b-072b-8e28-a909-c502754a7fcb -nodefconfig -nodefaults -chardev...

Hello dear proxmox users, I am willing to pass-through a parallel port (via usb-to-parallel) to guest vm that is too stupid (2003 server) to use a usb-to-parallel, but functions properly when kvm gives it a ready-to-use parallel port. It works beautifully with kvm/libvirt, but proxmox prevents...

I can report that we also have the same performance discrepancies between Proxmox 3.0 and Ubuntu 12.04 (we originally benchmarked the same VMs , and the memory and CPU score were lower with proxmox kernel) I assumed it was due to the kernel 2.6.x Our hardware is similar : a dell R720 with 2x...

Just for information : we have the same problem with Proxmox VE 3.0 after /etc/init.d/networking restart the VM (Linux 2.6, Win 2k8, Win 2k12) cannot be reached anymork (network unreachable) ... does somebody have any clues about such a problem ?

Well.. there seems to be some more information and workaround here : http://forum.broadcom.com/showthread.php?38533-Debian-6-0-7-2-6-32-19-GSO-Errors

Hello dear proxmox users, we also have the same problem on a Dell R720 with only one network cable plugged in the first port (10G) of the broadcom network card. I haven't seen exactly what impact does these crashes have on the network, but the system log is full of similar call stacks, so we...