# Performance [[Home]] › Performance This page covers GPU optimization, SMB Direct for User Profile Disks, QoS configuration, RDP over QUIC, and Azure Virtual Desktop tuning. --- ## 🎮 GPU / RemoteFX / vGPU Optimization ### GPU Memory Exhaustion Diagnosis ```powershell # Monitor GPU memory usage per session Get-Counter -Counter @( "\GPU Engine(*enqueue*)\Utilization Percentage", "\GPU Adapter Memory(*)\Dedicated Usage", "\GPU Adapter Memory(*)\Shared Usage" ) -SampleInterval 10 -Continuous # Check RemoteFX adapter status Get-WmiObject -Namespace root\virtualization\v2 -Class Msvm_Synthetic3DDisplayController | Select-Object ElementName, EnabledState, VRAMSizeBytes ``` ### GPU Partitioning (GPU-P) for Hyper-V ```powershell # Get available GPU partitions Get-VMHostPartitionableGpu # Assign GPU-P to a VM Add-VMGpuPartitionAdapter -VMName "RDSH-01" Set-VMGpuPartitionAdapter -VMName "RDSH-01" -MinPartitionVRAM 80000000 -MaxPartitionVRAM 200000000 # Verify assignment Get-VMGpuPartitionAdapter -VMName "RDSH-01" ``` > [!NOTE] > GPU-P requires Hyper-V on Windows Server 2022+ and a compatible GPU driver that supports SR-IOV or MCDM. --- ## 💾 SMB Direct for User Profile Disks (UPD) SMB Direct uses RDMA to dramatically reduce UPD mount latency. ```powershell # Verify RDMA capability Get-NetAdapterRdma | Select-Object Name, Enabled # Enable SMB Direct Set-SmbClientConfiguration -EnableMultichannel $true Set-SmbServerConfiguration -EnableMultiChannel $true # Verify SMB Direct is active for UPD share Get-SmbMultichannelConnection -ServerName "fileserver01" | Select-Object ServerName, ClientInterface, ServerInterface, Throughput # Benchmark UPD access performance $start = Get-Date Mount-VHD -Path "\\fileserver01\UPDs\user01.vhdx" -ReadOnly $mountTime = (Get-Date) - $start Write-Host "UPD Mount Time: $($mountTime.TotalMilliseconds)ms" # Target: <500ms ``` --- ## 📡 RDP over QUIC (Windows Server 2025+) RDP over QUIC provides significant improvements over TCP for high-latency or lossy networks. | Feature | RDP/TCP | RDP/QUIC | |---------|---------|----------| | Head-of-line blocking | Yes | No (stream multiplexing) | | Connection migration | No | Yes | | Forward Error Correction | Limited | Built-in | | 0-RTT reconnect | No | Yes | | Mobile/WiFi resilience | Poor | Excellent | ```powershell # Enable RDP over QUIC (Windows Server 2025 / Windows 11 24H2+) Set-ItemProperty -Path 'HKLM:\SOFTWARE\Policies\Microsoft\Windows NT\Terminal Services' ` -Name EnableRDPUDP -Value 1 # Verify QUIC transport is being used (check UDP 3389 activity) Get-NetUDPEndpoint -LocalPort 3389 ``` --- ## ☁️ Azure Virtual Desktop Optimization ```powershell # Set optimal screen capture rate for AVD Set-ItemProperty -Path 'HKLM:\SOFTWARE\Policies\Microsoft\Windows NT\Terminal Services' ` -Name MaxMonitors -Value 4 # Configure Multimedia Redirection (MMR) for Teams/media $mmrPath = 'HKLM:\SOFTWARE\Policies\Microsoft\Windows NT\Terminal Services' Set-ItemProperty -Path $mmrPath -Name EnableMediaRedirection -Value 1 # Optimize compression for WAN Set-ItemProperty -Path $mmrPath -Name VisualExperiencePolicy -Value 2 # 0=Let server decide, 1=Optimize for speed, 2=Optimize for experience ``` --- ## ⚙️ Performance Tuning Matrix | Scenario | Key Setting | Recommended Value | |----------|-------------|-------------------| | LAN / Datacenter | Color depth | 32bpp | | WAN / VPN | Color depth | 16bpp, Enable compression | | VDI (many users) | Dynamic resolution | Disabled | | GPU workloads | RemoteFX | Enabled, H.264 AVC444 | | Low bandwidth | Audio quality | Low (8 kHz, Mono) | | High latency link | UDP transport | Enabled (QUIC on 2025+) | --- **Next:** [[Enhancement-Roadmap]] →