performance

Dear Proxmox community, After several searches in the forum, I couldn't find much information regarding ZFS storage and its performance tuning. Thus, I'd like to start this thread to share best practices, tests, and tunning tips on how you design your data storage. Recently, I built a home...

I have an R730 running OPNsense and a ton of plugins, with an R740 downstream running Proxmox. Soon I will be racking two more R740s, one more R730, one C240 M4, and up to four HPE ProLiant DL380 Gen9s. Monitoring your hardware's performance & health is important no matter what, but with this...

As shown in the attachment and described in the title, it's really frustrating to use PVE in this situation, and I don't know what's causing the problem. the system is PVE 7.4-18, and no VM is running. Edit: I found that there is a specific VM can cause the issue, which is shown in my...

Hi there, I've been searching for a week and can't find the answer. Why is my Windows 11 VM so slow?? I'm simply testing the UI via RDP between several machines (2x VMs and 2x bare metal computers). The 2x bare metal computers are snappy and HIGHLY responsive. The 2x VMs struggle just...

I love Proxmox's ability to make it super easy to set up a three-node HA cluster with Ceph. I like to use it for my VMs and SQL databases that require a lot of IOPS. This way, if one of the nodes goes down, my SQL DB VM can be quickly redeployed to another node. That way, if one of the nodes...

I understand that LXC has less overhead than a VM, but the difference is so big that I suspect misconfiguration on the VM. Hopefully I can get help to correctly configure a VM for better performance. LXC specs: VM specs: Host specs: Using this fio configuration: [global]...

Hi, I've done some performance tests with the tool from PassMark. What I notice is that my CPU and memory are slower than in VMware even though Proxmox has a better CPU than VMware. From my understanding Proxmox should be better performing? Is there something I can finetune? Am I doing...

I am currently planning to migrate to Proxmox, but would like to find out some important things before I actually take the step. Before I ask my questions, I think it is best to describe my setup/requirements: I don't run many VMs, but a few with high IOPS and consistency requirements, as I run...

I am testing a migration from ESXi to Proxmox. I currently have a lab environment setup on ancient hardware/software. Ancient setup is a SuperMicro A1SAi motherboard with Intel Atom C2750. Hypervisor is VMWare ESXi 5.5. Onboard 1G NICs are driven by "igb" driver version 5.0.5.1. Add-on 10G...

Hi, while getting some infos about bhyve I stumbled upon this site: https://klarasystems.com/articles/virtualization-showdown-freebsd-bhyve-linux-kvm/ It's actually about comparing bhyve to KVM, but there is another thing: they compare IO performance of VMs installed in a zvol or in a raw file...

Long story short... not possible. I'm planning to install and use ceph and HA in my working cluster enviroment. I have 4 nodes with 256GB RAM each and 2x10G NICs dedicated for ceph cluster network traffic. I already know this may be not enough for perfect performance so I'm planning to swap NICs...

we are facing an issue and are not sure how to troubleshoot or find the exact reason behind it while we attempted to clone any VM or try to restore a backup from PBS we noticed the other VMs would get affected and not function properly like hanging for sometime already i tried to make the VM...

According the PBS manual, HTTP/2 is used for transfer data. Does this work when using IP server for remote sync or for FDQN? Or is a FQDN a requirement for HTTP/2?

It's possible some of the following is specific to my environment... but having read a ton of threads to solve my issues, I suspect these are more general insights gained. NFS has had serious reliability problems when it comes to rebuilding broken links... until version 4.1 Before that...

Hello, I have 3 servers later planning to add 3 nodes more. Lenovo sr570 CPU: 2x Xeon Silver 4208 2.1ghz 8c 16t OS: 2x sata 480gb m.2 ssd mirroring kit Network: 4x10GBase-T 2x lacp for frontend and cluster and 2x Lacp for ceph cluster and public every where will be individual Vlan. Switch: 2x...

Hi, I would like to talk about a topic already discussed hundreds of times here on the forum, but in slightly more scientific and practical terms: ZFS on top of Hardware RAID Introduction I already know all the warnings regarding this configuration, but since in most cases the references...

Hello, I did a raid5 then I changed a gradient so I wanted to know how I could see the reconstruction performance of my raid5

Started reading every Wiki page and a bunch of forum posts.. but the "best practices" for a stable production server are a little vague. Does anybody have any recommendations for setting for sysctl? network? Kernel tweaks? or Do I need to pay somebody for this kind of detail? and support? Is...

Hi all, i'm all to new proxmox so bare with me with my very limited knowlegde. I have recently installed proxmox 8 on my server dell r730 cpu: 2x 2680v4 xeon (14 core/28 threads each) 320gb ecc ram root disk, 1 disk zfs - Intel D3-S4610 Series - model: SSDSC2KG480G8 ( purely for proxmox ) 1x...

Greetings my friends. I wish you a good ending of the week. I have this particular question on my mind it's been a while now. On my laptop, I run a Python code that takes about 30 seconds to compile and run. My objective is to run the same code on a cluster of 3 nodes and determine how much...