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Performance
15 articles tagged Performance, newest first.
Windows Server 2025 on Proxmox VE 9.2: Slow VM Fixes
Why Windows Server 2025 can feel slow on Proxmox VE 9.2 next to Server 2022, and how to test drivers, CPU type, storage, power plan and security.
Why Is GPU Utilization Low? Compute, Network, Storage or Data Loading
How to tell whether low GPU utilization comes from compute, network, storage, data loading or scheduling, using one shared timeline of metrics.
128GB of RAM and Veeam's Backup Proxy Still Eats Everything
Why a Veeam backup proxy on a 128GB server kept eating memory while jobs dragged for days, even after the admin added another proxy server.
This Simple Zabbix Tool Exposed How Broken Server Tuning Is
ZabbixTune generates zabbix_server.conf from your hosts, items and hardware. Where it helps, where it falls short, and the AI debate it started.
Proxmox Host CPU Mode Slowed a Windows RDS Server
A Proxmox Windows RDS server felt slow while metrics looked fine. Host CPU mode triggered speculation mitigations; x86-64-v3 fixed memory latency.
Where's vMotion? The VMware to Proxmox Learning Curve
What VMware admins find when moving to Proxmox: live migration without DRS, SDN VNets vs Open vSwitch, Linux bridges, PCIe passthrough and Ceph.
Prometheus Memory Usage: How Dashboards Drove Cardinality
Why Prometheus memory usage climbs when dashboards depend on high-cardinality labels, and how auditing label usage with PromQL cuts series count and RAM.
Windows 11 on Proxmox Is Broken for Some Power Users, Cause Unclear
Windows 11 VMs on Proxmox with hybrid Intel CPUs run far below host speed. Pinning, Hyper-V flags, CPU type and a 24H2 regression are all suspects.
No Budget for Enterprise Drives? How Proxmox Users Fight SSD Wearout
Proxmox SSD wearout guide: reduce write amplification, tune ZFS, and extend consumer drive life when enterprise SSDs are out of budget.
Running Proxmox on Old Xeon Hardware: What Still Works
Can a 14-year-old dual Xeon still run Windows 11? Homelabbers weigh Proxmox against bare metal and share how they get value from aging hardware.
Running PBS on the Same Host? Why Your Backups Might Crawl
Why Proxmox Backup Server in a VM on the same host backs up slowly on fast hardware: NIC tuning, bare metal or LXC installs, and FIO benchmarks.
Slow Windows VMs in Proxmox? The CPU Type Setting May Be the Fix
Slow Windows VMs in Proxmox? The 'Host' CPU type can trigger heavy Windows mitigations. Why an emulated model like AES-V2 made one VM 15x faster.
How Proxmox Users Fix Full LVM-Thin Storage Pools and Bloat
Proxmox LVM-thin filling up? Learn practical fixes to reclaim space, prevent pool bloat, and stop backup or VM failures before they happen.
Slow Proxmox iSCSI Storage: Fixes for Ex-VMware Users
Why Proxmox iSCSI storage with LVM runs slow after a VMware migration, and the fixes users report: NFS, mirrored ZFS vdevs, a SLOG, multipath and VirtIO.
ZFS Configuration Guide for Optimal Performance
Master ZFS pool creation, tuning, and best practices for data integrity and speed.