performance issues

  1. P

    Very slow VMs (mostly)

    Hello there, I'm having some trouble on my new hardware (i5-14600K -- Raptor Lake Refresh; an ASUS motherboard with B760 chipset) with many of my VMs being very slow. Windows XP, Windows Vista, unusably slow. An old Arch Linux VM, takes a long ass time to install updates, but is otherwise...
  2. M

    Terrible VM disk performance compared to LXC

    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]...
  3. T

    Inconsistent Disk I/O

    Hi there, I'm trying to get a VM to run video editing software in MacOS (Resolve and FCPX). I've sorted a host of problems related to disk I/O such that the burst rate looks impossibly high to me, and yet, it still bogs down to completely frozen every few seconds. I thought this was an IO Delay...
  4. O

    Performance Probleme

    Hallo liebe Community, ich habe derzeit das Probleme, dass ich teils bis zu 5 Sekunden Verzögerung auf den VMs habe und finde keinen Fehler. Erst dachten wir, dass es am Netzwerk liegt. Dort allerdings haben wir im Schnitt weniger als 20MB/s an Traffic und die Proxmox Server sind einen 10G...
  5. C

    I/O and Memory issues, losing my mind...

    I need some help here. This is my first encounter with Proxmox. I made the switch after ESXi's free version went away. Here's my hardware: Dell Poweredge R710 128GB of RAM, 24 x Intel(R) Xeon(R) CPU X5670 @ 2.93GHz (2 Sockets), 6x 6TB 12Gb/s SAS drives connected to an HBA configured as a...
  6. Z

    SMB failure leads to abnormal PVE reading and writing, quickly consuming Nvme lifespan

    Disk lifespanPreliminary cause analysis of the accident: ProxmoxVE experienced an SMB/CIFS mount down during the backup to SMB/CIFS task, triggering endless read and write operations on the local disk. At the same time, it also triggered gvt related errors Accident occurrence node: ` journalctl...
  7. S

    [SOLVED] Asus Vivobook power limit and fancontrol issue [FIXED]

    I am using a laptop with a i913900H as a home server and I just tried to do some software encoding tests (using handbrake) on the ubuntu 24.04 VM. I felt like they where taking a bit long even tho they where software only and the laptop fans aren't ramping up. Checked cpuinfo and powerstat and...
  8. J

    Windows Guest - Disk I/O and Throughput Performance

    Hi All, I'm trying to identify what is the culprit for noted performance degradation specifically on Windows guests. Appreciate any help or advice, below is the write up of details. Background Usually I run exclusively linux guests on my Proxmox cluster, and these achieve (fio tested) in the...
  9. L

    Low ZFS read performance Disk->Tape

    hi, I need some Input for troubleshooting a performance Issue I have on a Proxmox Backup Server I run. Basically it's an off-site System that syncs with a production PBS. The Specs as follows: - Supermicro Board + Chasssis - Dual E-2680v4 Xeon (2x 14c) - 128GB RAM - 2x 480gb Seagate Nytro SSD...
  10. L

    Problem: PVE 8 migrating a replicated VM causes the VM to get 3-10x less IOPS

    Didn't know how to label this issue really. I couldn't find any similar post on the forums either. Two identical DELL servers, same specs. I am running PVE 8.0.4, updated to latest version. Servers are in a cluster (no QDevice yet, it's being prepared and is in testing at the moment). I have HW...
  11. W

    Poor VM performance in comparison to Unraid VM.

    I am wondering if anyone can help me debug, I have both UNRAID and prox running. Server has 2x e5-2699v4; 768gb ram. (HP dl380 Gen9) Unraid has ryzen 5 3600, 64gb ram I replicated the same setup I had on unraid as close as I could, but even after a lot of changes and iterations with my prox...
  12. T

    Slow performance in Ceph

    hey, i have set up a Cluster with 3 nodes, Its old hardware i know and i dont awaiting rocktspeed but a write sped in Ceph is a bit slow i thing, i have: 1 - Node 40 x Intel(R) Xeon(R) CPU E5-2650L v2 2 - 16 x Intel(R) Xeon(R) CPU E5620 3 - 24 x Intel(R) Xeon(R) CPU...
  13. C

    Proxmox web GUI, ssh, and qm commands stop working after machine is booted for a few minutes

    Hello all, I am coming here after trying to research this on my own for the last day or two. I recently enabled gpu passthrough and moved all of my vms over to it from a supermicro with similar specs that ran 7.2. The configuration goes as follows: HP z440 worksatation xeon e5 2699a V4 128GB...
  14. G

    Win 10 VDI w/GPU Passthru - Desktop Lag/Jitter Troubleshooting

    Hello, I'm building out a VDI model for specialized workstations for a host of reasons, but the primary being malware resilience. I believe if I build a Windows desktop platform underpinned by Proxmox, I'll be able to leverage the PVE for rapid restore of the guest in the case of a Windows...
  15. P

    MacOS Ventura: App Fenster minimieren sehr langsam

    Hallo Proxmoxer, da ich schon viel gesucht und ausprobiert habe aber noch keine Lösung gefunden habe, bitte ich euch um Hilfe. Ich habe eine VM mit MacOS Ventura erstellt die auch soweit performant läuft. Nur das minimieren von Programm-Fenstern und wieder vergrößern dauert bis zu 10 Sekunden...
  16. H

    Help With Stuttery Games in VM

    On my proxmox server (R7 5700X, 48GB RAM, Proxmox 7.4, Kernel: 6.2.11-2-pve) I have a vm running Arch Linux for gaming with a RX 6700 XT passed through to it. In most games I see performance within margin of error of running bare metal, but some games, most notably Sea of Thieves and Forza...
  17. R

    Optimizing vm's for epyc 7551p

    I have a supermicro h11ssl-i rev 2.0 motherboard (https://www.supermicro.com/en/products/motherboard/H11SSL-i) with 256gb ram and a AMD epyc 7551p CPU. I'm running a pci-passthrough'd boot configuration of windows 11, passing the nvme boot drive and the host CPU to the VM to try to have that...
  18. P

    i9 13900k & Performance Cores nur 3GHz in VM

    Hallo zusammen, ich habe einen 13900k im Einsatz und aktuell das Problem, dass ich die Geschwindigkeit der Performance Cores nicht erreiche. Auf dem PVE Host passt das mit den Geschwindigkeiten & das sieht da wie folgt aus: PVE Host Infos: PVE Version: 7.3-4 Kernel Version: 6.1.0-1-pve Wenn...
  19. CH.illig

    [SOLVED] Performance Optimierung / nicht die erwartete Leistung.

    Ich betreibe 2 Cluster, 1X tolles neues wo alles erwartungsgemäss funktioniert, aber einmal ein günstigeres Setup was in der VM aber eine meiner Meinung nach viel zu schlechte Performance abliefert. Einmal die eingesetzte Hardware und Config: Wir hatten das Synology NAS in Verdacht zur...
  20. H

    Strange ZFS performance issue

    Hello, I have old-ish HP ProLiant Microserver Gen8. It has 4x 3.5" bays (currently populated with 2x WD Reds = /dev/sda, /dev/sdb) + 1x old Laptop 2.5" HDD ( I installed Proxmox OS only = /dev/sdc ) My setup is that I have the Proxmox installed on the single 2.5" HDD, where the whole disk was...

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