memory

  1. Advice for memory optimisation / overcommit

    Hi I imagine some VPS hosting companies have ways to sell more memory than their servers actually have. How do they do this? Any advice for making the most of your server memory? A few ideas so far: * Use containers rather than VMs - pretty obvious * Make sure KSM (Kernel Samepage Merging) is...
  2. Vm Memory Use and Node Usage Doesn't Match

    Hi, I have deployed a Win10 Vm on a 64 GB Ram node and have allocated it 32 gb. After installing the Balloon Drivers the VM shows correct memory usage but the node summary still shows the incorrect usage , no zfs used and cache/buffer is at 3700k only. I have tried old virtio drivers too . How...
  3. Proxmox not allocating set memory to VMs

    I have this weird issue where all of the VMs that I run, do not get the allocated amount of memory. When rebooting the VM, the correct amount of memory is in fact available in the VM, but after a couple hours, the maximum allowed memory in the VM will be way less. The issue is resolved when I...
  4. Proxmox Install Appears To Crash At Random Times

    Hello everyone! I've been using Proxmox on NUC's for a while now and recently purchased a new ASRock NUC Box 1165G7 then installed Proxmox 7.1 as a ZFS mirror on two internal disks (Sata SSD and NVMe M.2). I started experiencing odd things where pings and the Proxmox UI would stop responding...
  5. Best overprovisioning settings for this setup?

    So I'm setting up a small homelab on a PC: CPU: Intel Xeon E31268L v3 - 4 cores 8 threads - Around an i7 4770 in performance RAM: 16GB DDR3 SSD: 128GB mSata => Boot and VMs HDD: 2x8TB HDD 1Gbps Network I'll install Proxmox on that and set up these VMs: 1. OpenMediaVault 6 with the 2x8TB HDD...
  6. Windows server 2016 memory usage display

    Hello! I have a windows server 2016 vm in proxmox, with 16gb of memory, installed the ballooning service which is running, but the used memory displayed by proxmox is very high (about 12gb), but in the task manager the used memory is only 3gb. Nothing happens if I stop or restart the ballooning...
  7. What exactly is memory usage?

    Hey, I have a few VMs running Ubuntu. When I log-in using SSH, then the VMs tell me this info: So the memory usage (from Ubuntu's perspective) is around 11%. Now when I look at the VM overview of Proxmox, I see this: So Proxmox is telling me that the memory usage of the databases VM is...
  8. KVM VM (64GB) won't start with memory hotplug enabled

    Hello, This had been asked several times however after extensive search there is still no real answer that would make sense or a formula that I was able to follow to assign memory - sometime it work and sometimes doesn't (guessing!) up to 48GB works fine after adding this workaround "options...
  9. High memory usage without any VM's Running

    Hello there! Recent changes: i have recently migrated my boot device on my proxmox server to two Seagate Iron Wolf M.2 SSD's - which are running in a raid1 configuration for failover. After setting up proxmox i started migrating all my VM's to it, thats where i noticed something weird. Proxmox...
  10. pve-firewall restarting server to reduce memory usage

    Good day all, In the process of upgrading a pve 5 cluster to pve 6 (better late than never). After the corosync upgrade to 3 with all cluster nodes still on pve 5 and online with quorum there was a netwok issue on one of the nodes. All VMs became unreachable for a minute or two and then came...
  11. Lowering arc limit with ZFS when low on ram?

    I have a system using zfs it only has 64 GB of memory in the unit with 241TB of storage, I have 3 windows vm's using 8gb each arc hit ratio at 84% .Proxmox shows a total of 48.11 GiB of 62.57 GiB used (76.89%) my vm's become extremely sluggish during a resilver so much so that we can't log in...
  12. Understanding Proxmox memory saving features

    Hi there, We've been migrating away from our ESXI cluster to Proxmox, and it has been great so far, but I am still wondering about the memory saving features such as KSM and ballooning. Are KSM and Ballooning both enabled at the same time once the 80% limit has been reached? Will KSM /...
  13. 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...
  14. Memory Usage not same as in VM

    Hello, My summary of virtual machine Memeory Usage is not correct by all linux servers. For my windows vm's i have installed the virtio drivers en the guest agent en they memory usage is perfect the same as in task manager. Only how do i set this in debian and centos servers? I have installed...
  15. Memory Leak

    I have a hyperconverged setup with 3 nodes. All running Debian 10, same hardware. There appears to be a memory leak on all the nodes that I could use help tracking down. Here's some pertinent information Package Information: proxmox-ve: 6.3-1 (running kernel: 5.4.78-2-pve) pve-manager: 6.3-3...
  16. [SOLVED] Parameter verification failed. (400) Memory

    Hello Proxmoxians, I'm trying to create a new VM on one of our nodes but I'm getting an error when clicking "Finish." Parameter verification failed. (400) memory: value must have a minimum value of 16 Searching the forums and the web didn't give me anything useful, so I've resorted to...
  17. Cluster possibility?

    Hi, I am currently looking to use proxmox for my cluster but i have some consernes.. can i put all the cpu power, memory power on a single pool so for exemple i can use 4core on one node and 2core on an other node and for memory i use 4GB on 1 node and 1GB on an other node. is it something...
  18. out_of_memory with no peaks in usage

    Hi, have a strange problem with one PVE (V. 6.1) host and its Debian 8 (old version for technical reasons) Guest. The guest crashes every now and then with no apparent reason, sometimes runs fine for weeks. The PVE logs say out_of_memory : Dec 10 18:09:39 pve kernel...
  19. LXC RAM Verbrauch nicht nachvollziehbar

    Hallo liebe Proxmox Community! Ich beobachte seit Längerem ein Problem mit LXCs bei Proxmox. Nach ein paar Tagen unterscheidet sich der Speicherverbrauch laut ps_mem (welches den Speicherverbrauch der einzelnen Prozesse in der VM addiert) und der zur Verfügung stehende Speicher laut free...
  20. Help with zfs memory management

    I installed my proxmox server on a two 250 gb ssd with raid1. My vms are stored on another zfs storage pool. The box has 64 gb memory. My memory usage is constantly past 90% despite having a few containers and vms setup with about 30 gb usage between all of them. I am having to do this daily...

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