performance issues

  1. 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...
  2. 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...
  3. 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...
  4. 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...
  5. 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...
  6. 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...
  7. 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...
  8. 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...
  9. 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...
  10. R

    Optimizing vm's for epyc 7551p

    I have a supermicro h11ssl-i rev 2.0 motherboard ( 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...
  11. 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...
  12. 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...
  13. 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...
  14. O

    Is RAID1 good for performance?

    Hello, I have 1 SSD 256GB, 2 HDDs each with 1TB. I did a software RAID 1 using only the HDD through proxmox environment. It is ZFS filesystem. Imported a vm (4GB RAM). It uses 12GB of RAM. I wanted to host three websites and considering each has 4GB RAM it looks like the RAM will be used...
  15. J

    [SOLVED] Poor disk speeds in Windows 11 guest

    I recently migrated my Windows 10 virtual desktop to Windows 11. However, the system has become very unresponsive and feels really sluggish. There is a lot of delay when clicking or typing. I have scoured the Proxmox forums and Google, but so far I haven't found a solution. I ran some...
  16. P

    Windows 11 Very Low Performance

    I've just installed Proxmox on my mini PC. It's weird because the CPU is very low according to Proxmox dashboard - around 1% but RAM is around 18GBs when there's just Windows launched. I've allocated 20GBs of RAM thinking that would be an overkill but it seems it's not. Proxmox host: CPU...
  17. H

    Desktop Performance mit CPU "Host"

    Hallo zusammen, hatte schonmal jemand das gleiche Problem einer schlechten Desktop performance in Windows, wenn man den CPU Type der VM auf "Host" setzt? Die CPU ist ein Intel Xeon W-2245. Wenn ich die CPU der VM auf KVM64 setze, ist die Performance normal.
  18. N

    3 node CEPH hyperconverged cluster fragmentation.

    Proxmox = 6.4-8 CEPH = 15.2.13 Nodes = 3 Network = 2x100G / node Disk = nvme Samsung PM-1733 MZWLJ3T8HBLS 4TB nvme Samsung PM-1733 MZWLJ1T9HBJR 2TB CPU = EPYC 7252 CEPH pools = 2 separate pools for each disk type and each disk spliced in 2 OSD's Replica = 3 VM don't do many...
  19. E

    Recommendations: Raid Cards HBA's and Networking

    This has probably been gone over one million times already but time for another round. I did a quick search for the title but didn't find anything that makes much sense for my application in the first 5 threads. I currently have two HP DL380 G7 machines with X5675's 128Gb Ram and consumer drive...
  20. P

    [SOLVED] VMs Linux and Windows very slow and laggy

    Hi guys, I have installed Proxmox VE on the following hardware: AMD B550 Gaming Mini-ITX AMD ryzen 5700g 32GB RAM Corsair Vengeance PRO SSD Samunsg 980 as OS storage SSD Crucial 1TB as VMs storage Following qm confid ID command for both Linux (ID: 100) and Windows (ID: 101) agent: 0 balloon...


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