slow

  1. vzdump of VM or CT slow when stored on local-btrfs

    Has anyone else seen or had issues with local-btrfs. I have tested with every setting I can find. When trying to backup a VM or container that is using local-btrfs. It is not usable. I am talking 8-128kib/s I have adjusted vzdump I have tried no compression. You name it. I move the VM or...
  2. VM's very slow

    Hello, We have now for 1,5 year running Proxmox on 9 fyshical machines and works fine. I have in the past weeks upgrade all machines to version 7. and now from last friday (couple of days) we have problems with some of our virtual machines. They are very and very slow! we running linux and...
  3. PVE very slow restore vm

    I have a fresh install on two sata SSDs on ZFS - Raid1 which performs very slow on restore from NAS (via NFS) NAS is connected to 100mbps link, even on such link backup durations is about 3 mins but restore is about 30 mins (vm is new about 1.7GB) My observation was that on restore NAS was...
  4. Solved my ZFS scrub problems.

    it seems that a "new" sequential scrub algorithm for ZFS is causing head aches on some of our Nested systems. The "new" metadata scan reads through the structure of the pool and gathers an in-memory queue of I/Os, sorted by size and offset on disk. The issuing phase will then issue the scrub...
  5. Windows 10 VM sudden speed drop when copying files

    Hi I have a problem with my win 10 vm that when copying files, it copies at a good speed 200-400MB/s and then randomly drops to 0, and all other vms become unresponsive, also the I/O delay becomes really high. It's the same if I'm copying from a network drive or like a folder from destkop to any...
  6. Why would the bandwidth throttle down? (VM with wireguard) (video)

    10.0.0.1 - VPS outside LAN 10.0.0.2 - VM inside proxmox with wireguard (within LAN) 192.168.1.112 - NAS without wireguard (within LAN) Video: https://reddit.com/link/wp26ec/video/85rm42pn7wh91/player 10.0.0.1 <--> 192.168.1.112 bandwidth is throttling as show in my video (traffic routes...
  7. Backups from iSCSI backed LVM very slow

    Hello, I've found a few threads about similiar problem but none of them have a solution. We have a 3 node cluster with multipathed iSCSI storage using IBM Storwize SAN. In Proxmox 6.4 which we use, there is a shared LVM created which stores VMs on all nodes. We didn't notice any performance...
  8. SSD's slow on Proxmox but not on Windows

    Hello, i have a weird problem i cant understand, i have a couple of cheap 1tb kingston ssds (yes i know that comes with its own problems) that i have ran in SW RAID1, ive been running my VM's of this raid pool, but what i have found out is that after about 6gb of writes, the speed goes all the...
  9. [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...
  10. Slow Network Speed E1000 or Virtio Drivers

    Hello, We have upgraded proxmox ve 6.4 to 7.1... We had always the E1000 drivers, but now on version 7.1 its slower... I have tried the Virtio drivers but that was worse!!! very slow. What can we do about it? Greetings, Albert
  11. very poor performance with consumer SSD

    I have a pair of HPE DL360 Gen8 dual Xeon, 64GB RAM, 2 hdd 10k sas for system (ZFS RAID1) and 4 consumer sata SSD They're for internal use, and show absymal performances. At first I had ceph on those SSD (with a third node), then I had to move everything to NAS temporarily. Now I...
  12. MsSQL server 2016 on pve Vs ms hyper-v performance problem

    Good day support staff and community, I have a problem with mssql server 2016 standard I migrated a windows 2016 virtual machine with mssql server 2016 from Hyper-v to pve. The customer reported a sluggish performaces. I'm using mssql studio to run a test query (which reads a lot of data but...
  13. TrueNAS -> ProxMox slow network and read/write performance

    Hey there, i tested and googled some settings and got a little push up for write/read performance but its not that good. Via iperf i cant even get higher than 1.7 mbits/sec from the storage to the proxmox ve. My TrueNAS Server: TrueNAS Core 12.0-U5.1 HP DL380e Gen8 Intel Xeon CPU E5-2450L...
  14. Windows guest slow after pve 6 to 7 upgrade

    Hi! I've been using PVE for about a year on my DL380G8, it has been running great with a few guests - one of them is a Windows Server 2019 (as a AD DS DC) It worked great so far, but after I upgraded my host to PVE 7 successfully (following the official guide) - the windows guest became...
  15. Slow VM on external CEPH Cluster

    Hello all, I have just set up an external CEPH cluster together with an external specialist. This is configured as follows: 16 OSDs 1 pool 32PGs 7.1TiB free storage on 4 nodes with each: 64GB RAM 12 core processors Only NVMe SSDs & normal SSDs Connected in Cluster Net with 10G Connected to...
  16. Proxmox and VM performance are too slow, Linux VM Taking 3-4 hours and Windows VM 7-8 hours to bootup

    Hello, I installed a new setup in my server. (Unfortunately old one crashed completely). I had to rebuild it from scratch. In capacity, it's 2tb HDD SATA + 500 GB SSD, with 64GB RAM. I followed the steps as per documents. I selected Ext4 for my installation. Surprisingly, once I loaded vm's. It...
  17. Windows VM really Bad Memory Performance!

    Hello there lovely people. So, as the title says, Memory Performance is really bad. I tried to debug this since 3 or 4 Weeks now and I´m all out of Ideas. In a Linux VM i get around 24GB/s with 1M BS which is around the maximum my Board/System can handle. I used the Phoronix Test Suite as a...
  18. Weak performance Win10 (20 cores and 32GB)

    Greetings, i have old small HP server with CPU E3-1265L V2 @ 2.50GHz (8 cores) and 4GB RAM. I use Proxmox 6.1, installed Win10 + Ubuntu server and all works just fine. Sometimes i run some Ubuntu server distro and for years no problem. Recently i bought full server HP ProLiant ML350p Gen8 with...
  19. Limit RAM used by ZFS?

    My 64GB RAM machine with ZFS seems to stabilise at 80% memory usage all the time for the root proxmox host. (Proxmox 6.2.4) I have several VMs running on top of it, all of them using no more than 20GB of RAM, so I suspect all the RAM usage is by ZFS on the root host. I've read several posts...
  20. RDP - Windows Desktop Remote Control (slow or black window)

    I order a new dedicated server with Proxmox and one VM. 10Gb Ram 6 Core @ 3.50GHz (1 Socket) When connect to RDP go right , but when try to COPY & PASTE from my computer to dedicated server start copy for few second and stop. The RDP go to black windows and I need to close RDP and...

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