computing:proxmox
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| computing:proxmox [2024/01/07 00:04] – oemb1905 | computing:proxmox [2024/01/07 00:09] (current) – oemb1905 | ||
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| If ram is an issue, make sure to throttle arc. In my case, I let zfs run free and tightly provision the VMs. Each rig and use case will be different; adjust accordingly. Above, I already shared the command to determine your physical CPUs / sockets. Here's how to determine all three: | If ram is an issue, make sure to throttle arc. In my case, I let zfs run free and tightly provision the VMs. Each rig and use case will be different; adjust accordingly. Above, I already shared the command to determine your physical CPUs / sockets. Here's how to determine all three: | ||
| - | lscpu | grep "CPU(s): | + | lscpu | grep "thread" |
| lscpu | grep "per socket" | lscpu | grep "per socket" | ||
| lscpu | grep " | lscpu | grep " | ||
| - | | + | |
| Core(s) per socket: 12 | Core(s) per socket: 12 | ||
| Socket(s): 2 | Socket(s): 2 | ||
| - | This is for an 8-core i7 Dell XPS 8900. Thus, I have 8*4*1 = 32 cores to play with. As for RAM, I have 64GB total, so subtracting 4Gb for the OS, I have 32GB left for the VMs with roughly 32GB being allocated for zfs. PVE is very strict in interpreting allocated RAM and will OOM kill VMs if it senses it is short. This is in contrast, for example, with virsh which will allow sysadmins to run how they see fit even at risk of virsh crashing. For this reason, either expand your rig, adjust arc, or tightly provision your VMs, or all three. I personally just tightly provisioned my VMs as I want zfs to use as much RAM as it needs. If you prefer to throttle arc, here's how: | + | To determine vCPUs, you do threads*cores*physical-sockets, or (12*2)*(12)*(2) |
| sudo nano / | sudo nano / | ||
computing/proxmox.txt · Last modified: 2024/01/07 00:09 by oemb1905
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