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@gkovacs i will thank you so much, because, this options and restrictions helped me to stabilise my Proxmox host server, VM to. The host server run now stable, about 50% less RAM memory usage, and run solid, no more random restarting, and, what important, i can now run sheduled backups of VM...

@gkovacs Thanks you so much for your info. With the first options, i was able to backup again my VM web server, but, the RAM on host, during the backup is going to 99%. But successfully backed up the VM on my externaly FreeNAS NFS Partition. If no backup, RAM on host is now stable on 60-70%...

@gkovacs my ratio on host it was 5, but the swappiness it was 60. I changed swappiness now to 1 on host, and look how it works. On VM, ratio was 10, and swappiness 60 to. I changed now on both to 5 and 1, and see how goes now, and rebooted entire Host server. But, about ZFS, i read many...

@gkovacs Thanks for your reply. I will text this 2 tweaks to, but, are the tweaks for host, or for VM(ratio and swappines)? My host is a RAIDZ2 ZFS, 4x 1TB WD Se HDD's (WD1002F9YZ), 24GB ECC RAM, 2 Intel Xeon 2 Core each (4 Threads each, totaly 8 threads) CPU on both is about 10-30% My RAM in...

Hi gkovacs, and thank you for quick answer. On my Proxmox host: sysctl vm.min_free_kbytes vm.min_free_kbytes = 19863 On Debian Server VM: sysctl vm.min_free_kbytes vm.min_free_kbytes = 67584 I have totaly of 24GB ECC RAM on Host, and for VM set Min of 12GB and Max of 16GB But, i will try now...

Hi The same problems here happend to me. It seems that it is a problem with VM from 3.4 only, because, i have a VM from 3.4 (in this 3.4 never have a problem with it), and now i updated a couple of weeks ago to the 4.3, and, about couple of days, it started every couple of hours to have an...