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I have the exact same setup and I use the CPU internal USB controller for passthrough.

https://github.com/zfsonlinux/zfs/pull/7363 Almost implemented stable

Well, if you want to decrease your ARC, you need to free the already allocated memory. https://linux-mm.org/Drop_Caches Running that drop_caches command _should_ free the reclaimable RAM from the ARC. There are some deficiencies in the ZFS on Linux memory management though, which could cause...

I guess it's the use of swap, but if you want a proper analysis, you should give much more information. We're out of crystal balls, you know?

Ehm, you can w/o reboot by: echo "your wanted size in byte" > /sys/module/zfs/parameters/zfs_arc_max and a echo 3 > /proc/sys/vm/drop_caches

Directory on zfs rpool

Ballooning still seems to be broke and not only Windows is affected. I created a bug https://bugzilla.proxmox.com/show_bug.cgi?id=1763

Edit, some more test and results: After this the arc was never beeing increased over arc_min_size, so after it was dropped during vzdump it was limited to 1.47G (=arc_min) instead of the full 7G until I did a reboot. Then I have set arc_min == arc_max and recognized that during a vzdump the arc...

I did a vzdump snapshot proxmox-ve: 5.1-43 (running kernel: 4.15.17-1-pve) pve-manager: 5.1-52 (running version: 5.1-52/ba597a64) pve-kernel-4.13: 5.1-44 pve-kernel-4.15: 5.1-4 pve-kernel-4.15.17-1-pve: 4.15.17-8 pve-kernel-4.15.15-1-pve: 4.15.15-6 pve-kernel-4.15.10-1-pve: 4.15.10-4...

before: https://pastebin.com/DPvREayk meanwhile: https://pastebin.com/AThQeRJy free -m total used free shared buff/cache available Mem: 48308 32520 394 147 15392 15071 Swap: 8191 119 8072 I...

Oh, so this was "only" related to backup jobs. I have a machine with two storage pools, one for root and multiple VMs and one fast for only one VM, I recognized while rootpool is "under heavy load" the VM with its own storage has some freezes. So will my only option to avoid this be to get an...

Try: hostpci0: 03:00.0,pcie=1 (or even w/o pcie) instead. https://pve.proxmox.com/wiki/Pci_passthrough If still present try hostpci1

Do you mean you have implemented the limitation (what is just kinda workaround) or you have solved the CPU freezes while high i/o?

Any progress here, or mb a workaround?

So even with 4.15.10-1-pve cpu type host is not working for Zen. Windows bootup is starting, but then after a while the VM eats 800-1400% CPU in top and nothing more is happening. Also I recognized that you can not passthrough the CPU internal USB controller to a VM anymore, which was working...

Oh, the question was more related on proxmox staff ;) But ty anyway. @proxmox Team Are the AMD issues solved with the newer 4.15 kernel? Cant test it by my own right now

Are the AMD bugs resolved?

Hmm, I did some testing and with 4.13.4 kernel (which I use atm on this) I can not reproduce the swap usage. Nevertheless MemTotal: 49403976 kB MemFree: 5780856 kB MemAvailable: 10460368 kB Buffers: 4460672 kB Cached: 731920 kB SwapCached: 0 kB...

(echo "COMM PID SWAP"; for file in /proc/*/status ; do awk '/^Pid|VmSwap|Name/{printf $2 " " $3}END{ print ""}' $file; done | grep kB | grep -wv "0 kB" | sort -k 3 -n -r) This is what I use for it, the processes who are using swap are not always the same for me. Sometimes I do not see any...

All my containers have 0MB swap and they do not reach their max memory limit (far away, 1GB+ free)