memory

  1. KSM - Will it work for LXC?

    I was experimenting with KSM. I wonder if it can work on PVE with lots of LXC containers running same apps. Eg.: lots of apaches. I've enabled ksmtuned with threshold of 50%, it seems to run=1, but pages_shared:0 means it's not sharing and full_scans:0 probably means it didn't even tried to find...
  2. Balloon memory behaviour in version 5.3 changed compared to 5.1

    Hello, The balloon memory behavior in version 5.3 changed compared to 5.1. And not for good. I have a VM with a memory configuration like this: min memory 448mb max memory 16gb In Proxmox VE 5.1, the host provided memory to the guest machine as it was needed. Usually, it had 3gb, and when a...
  3. High Memory Consumption

    Good Morning. I implemented a Proxmox server for testing in a company that provides consulting, what happens is: Server has 16gb RAM. Only Server 2016 x64 is currently installed. I can not work with 2 concurrent users in RDP and I have not been able to figure out what happens to the memory...
  4. [SOLVED] Memory Usage on empty node with Ceph

    Hello, I've got a PVE cluster running Ceph and found out that a node, left alone without VM, will steadily use more RAM over time: This is a concern since my total available memory isn't infinite ;) I can reboot to solve the problem but it suppose that seems a bit Micro$ofty... I could...
  5. Cannot set up guest memory 'ram-node0 on system with 64GB ram free

    I've a Proxmox system with Virtual Environment 5.2-10 with problem for start a new machine with 16GB ram- kvm: -object memory-backend-ram,id=ram-node0,size=8192M: cannot set up guest memory 'ram-node0': Cannot allocate memory After read message, I've investigated. On Proxmox interface y show...
  6. Lapse in the Graph report

    I am doing my daily rounds (lol it sounds very official) and I noticed that my web interface was not responsive, I thought it was my laptop, it does that from time to time when I go from one place to the other, my firewall sometimes blocks me. So I rebooted my laptop and tried again, still the...
  7. Memory and backup tasks

    Hi, everyone I have a problem with the use of memory in my proxmox. The memory consumption is increasing while a backup task is in progress, and when finalize the backup job, remains high. I run only 3 containers and no VM in this server (is a Lenovo ST550). Kernel Version Linux 4.15.18-7-pve...
  8. when writing to disk and memory being swallowed up

    Hello, I'm seeing when I write a large file within a VM linux, I'm also filing up the VM systems memory. This memory is released when I delete the file. dd if=/dev/zero of=test1.img bs=512k count=1000000 Is this normal? Cheers
  9. swappiness on container

    Hi, I use Proxmox version '5.1-38'. I've 30 containers and VM-s. I want to change swappiness variable from 60 to 15 on several containers and it says 'sysctl: setting key "vm.swappiness": Read-only file system'. I think I should to change this on node but I don't want. Can I change it on only...
  10. It seems that GPU passthrough (with hostpci entry) forces full memory allocation?

    I have seen a suspicious behavior of my GPU-passthrough VM (Linux) for quite some time. That is no matter how small the actual memory usage is (even when the ballooning is enabled), upon starting the VM, it will "try" to allocate the full memory (as configured). This doesn't mean that ballooning...
  11. Inspect memory (RAM) on one node

    Hi guys! I have a cluster with proxmox, how I can see, which VMs use memory (RAM) on one node. command or something else...
  12. Windows 10, anybody has done it?

    I need to virtualize several dozen Windows 10 Pro boxes, does anybody know if the Virtio drivers do work and also how does the memory sharing works? I need to show 16G RAM per box, but naturally, I want to use only what is needed so I may overcommit.
  13. [SOLVED] Enabling memory hotplugging results in incorrect RAM allocation?

    Hi, I have a personal Proxmox environment I use for testing, for it I use the community repo which is running the latest version of proxmox VE (5.2-2). Full package version list: proxmox-ve: 5.2-2 (running kernel: 4.15.17-1-pve) pve-manager: 5.2-1 (running version: 5.2-1/0fcd7879)...
  14. Wrong memory usage on KVM VM

    Hi, I am using a pfSense 2.4 (FreeBSD based) virtual machine on KVM and I see a different RAM usage in Proxmox than in the VM itself. Proxmox shows more than 90% of RAM usage (~ 15Gb of 16 Gb): but both pfSense and FreeBSD are showing only 2% of usage: But the virtual machine is giving...
  15. Sudden reboots while running backups (maybe ZFS ram issue?)

    I am investigating 2 incidents that seem to be similar. On 2 different PVE servers, both running ZFS with raidz (mirroring with 2 disks), I experience random reboots during backups of KVM machines. (no clustering, single hosts) Both server are low on RAM. One has 8 GB RAM and a single VM with 1...
  16. Memory Overcommit

    Hello there, I have two questions. When VM is starting, is there some way to allocate full memory which is assigned to VM on node? If not, is there any option to disable memory overcommitment? I'd be very grateful for any response. Thank you!
  17. Memory allocation failure

    Hello I would like to ask you for some help. I've a weird situation. Every few hours I can't restart my VM because of: root@s0:/home/xarion# qm stop 128 root@s0:/home/xarion# qm start 128 ioctl(KVM_CREATE_VM) failed: 12 Cannot allocate memory failed to initialize KVM: Cannot allocate memory...
  18. [SOLVED] LXC showing shared memory from host

    Hello, It's seems the shared memory from an LXC container shows the shared memory from the host. Here's the host: total used free shared buffers cached Mem: 64414 62599 1815 1833 9329 31029 -/+ buffers/cache: 22241...
  19. [SOLVED] PVE Container Memory Management

    Hi, I am new to Proxmox and am using it on a small homelab system. It is running on a fanless mini PC with only 8GB of RAM. I am a Linux user and so I am currently hosting virtual Linux environments running in containers. So I am trying to understand how memory is managed. So let's assume I...
  20. EDAC sbridge errors after upgrade to 5.1

    Hi folks, Just after a sanity check here. I recently upgraded my Proxmox 5.x server to 5.1 and noticed the following errors on boot. [ 0.000000] [Firmware Bug]: TSC_DEADLINE disabled due to Errata; please update microcode to uersion: 0x3a (or later) Reading all physical volumes. This may...

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