Remote Desktop Services slow after pve7to8 migration

Gregory79

New Member
Apr 3, 2024
8
0
1
Hello,
I just migrated pve7 to 8. Every VMs work well except two Remote Desktop Services VMs which are slow, especialy in Excel. I'd like to know if anybody had the same problem and if someone has some ideas on how to solve the problem. regards
 
Here my VM config :

agent: 1
bios: ovmf
boot: order=scsi0;ide2;net0
cores: 8
efidisk0: datastore1:vm-116-disk-0,efitype=4m,pre-enrolled-keys=1,size=1M
ide2: none,media=cdrom
machine: pc-q35-8.1
memory: 32768
meta: creation-qemu=7.1.0,ctime=1673962676
name: XXXXXXXXXXXX
net0: virtio=XX:XX:XX:XX:XX:XX,bridge=vmbr1
numa: 1
ostype: win11
scsi0: datastore1:vm-116-disk-1,cache=writeback,discard=on,iothread=1,size=100G,ssd=1
scsihw: virtio-scsi-single
smbios1: uuid=4c3d90cd-9a00-449b-be71-37bd8327c2e6
sockets: 2
tablet: 0
tpmstate0: datastore1:vm-116-disk-2,size=4M,version=v2.0
vmgenid: a9f85d0e-d80d-40ef-b891-71d37cb57f00
 
Thanks for your comment.

Bash:
proxmox-kernel-helper: 8.1.0
pve-kernel-5.15: 7.4-11
proxmox-kernel-6.5.13-3-pve-signed: 6.5.13-3
proxmox-kernel-6.5: 6.5.13-3
pve-kernel-5.15.143-1-pve: 5.15.143-1
pve-kernel-5.15.131-2-pve: 5.15.131-3
pve-kernel-5.15.131-1-pve: 5.15.131-2
pve-kernel-5.15.116-1-pve: 5.15.116-1
pve-kernel-5.15.108-1-pve: 5.15.108-2
pve-kernel-5.15.107-2-pve: 5.15.107-2
pve-kernel-5.15.85-1-pve: 5.15.85-1
pve-kernel-5.15.83-1-pve: 5.15.83-1
pve-kernel-5.15.74-1-pve: 5.15.74-1
pve-kernel-5.15.64-1-pve: 5.15.64-1
pve-kernel-5.15.60-2-pve: 5.15.60-2
pve-kernel-5.15.60-1-pve: 5.15.60-1
pve-kernel-5.15.39-3-pve: 5.15.39-3
pve-kernel-5.15.30-2-pve: 5.15.30-3
ceph-fuse: 16.2.11+ds-2
corosync: 3.1.7-pve3
criu: 3.17.1-2
glusterfs-client: 10.3-5
ifupdown2: 3.2.0-1+pmx8
ksm-control-daemon: 1.4-1
libjs-extjs: 7.0.0-4
libknet1: 1.28-pve1
libproxmox-acme-perl: 1.5.0
libproxmox-backup-qemu0: 1.4.1
libproxmox-rs-perl: 0.3.3
libpve-access-control: 8.1.3
libpve-apiclient-perl: 3.3.2
libpve-cluster-api-perl: 8.0.5
libpve-cluster-perl: 8.0.5
libpve-common-perl: 8.1.1
libpve-guest-common-perl: 5.0.6
libpve-http-server-perl: 5.0.6
libpve-network-perl: 0.9.6
libpve-rs-perl: 0.8.8
libpve-storage-perl: 8.1.4
libspice-server1: 0.15.1-1
lvm2: 2.03.16-2
lxc-pve: 5.0.2-4
lxcfs: 5.0.3-pve4
novnc-pve: 1.4.0-3
openvswitch-switch: 3.1.0-2+deb12u1
proxmox-backup-client: 3.1.5-1
proxmox-backup-file-restore: 3.1.5-1
proxmox-kernel-helper: 8.1.0
proxmox-mail-forward: 0.2.3
proxmox-mini-journalreader: 1.4.0
proxmox-offline-mirror-helper: 0.6.5
proxmox-widget-toolkit: 4.1.5
pve-cluster: 8.0.5
pve-container: 5.0.9
pve-docs: 8.1.5
pve-edk2-firmware: 4.2023.08-4
pve-firewall: 5.0.3
pve-firmware: 3.9-2
pve-ha-manager: 4.0.3
pve-i18n: 3.2.1
pve-qemu-kvm: 8.1.5-4
pve-xtermjs: 5.3.0-3
qemu-server: 8.1.1
smartmontools: 7.3-pve1
spiceterm: 3.3.0
swtpm: 0.8.0+pve1
vncterm: 1.8.0
zfsutils-linux: 2.2.3-pve1

Bash:
Architecture:            x86_64
  CPU op-mode(s):        32-bit, 64-bit
  Address sizes:         48 bits physical, 48 bits virtual
  Byte Order:            Little Endian
CPU(s):                  128
  On-line CPU(s) list:   0-127
Vendor ID:               AuthenticAMD
  BIOS Vendor ID:        Advanced Micro Devices, Inc.
  Model name:            AMD EPYC 7452 32-Core Processor
    BIOS Model name:     AMD EPYC 7452 32-Core Processor                  CPU @ 2.3GHz
    BIOS CPU family:     107
    CPU family:          23
    Model:               49
    Thread(s) per core:  2
    Core(s) per socket:  32
    Socket(s):           2
    Stepping:            0
    Frequency boost:     enabled
    CPU(s) scaling MHz:  83%
    CPU max MHz:         2350.0000
    CPU min MHz:         1500.0000
    BogoMIPS:            4690.86
    Flags:               fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush mmx fxsr sse sse2 ht syscall nx mmxext fxsr_opt pdpe1gb rdtscp lm constant_tsc rep_good nopl nonstop_tsc cpuid extd_apicid aperfmperf rapl pni pclmulqdq monitor ssse3 fma cx16 sse4_1 sse4
                         _2 movbe popcnt aes xsave avx f16c rdrand lahf_lm cmp_legacy svm extapic cr8_legacy abm sse4a misalignsse 3dnowprefetch osvw ibs skinit wdt tce topoext perfctr_core perfctr_nb bpext perfctr_llc mwaitx cpb cat_l3 cdp_l3 hw_pstate ssbd mba ibrs ibpb stibp vmmcall fsgsb
                         ase bmi1 avx2 smep bmi2 cqm rdt_a rdseed adx smap clflushopt clwb sha_ni xsaveopt xsavec xgetbv1 cqm_llc cqm_occup_llc cqm_mbm_total cqm_mbm_local clzero irperf xsaveerptr rdpru wbnoinvd amd_ppin arat npt lbrv svm_lock nrip_save tsc_scale vmcb_clean flushbyasid decod
                         eassists pausefilter pfthreshold avic v_vmsave_vmload vgif v_spec_ctrl umip rdpid overflow_recov succor smca
Virtualization features:
  Virtualization:        AMD-V
Caches (sum of all):
  L1d:                   2 MiB (64 instances)
  L1i:                   2 MiB (64 instances)
  L2:                    32 MiB (64 instances)
  L3:                    256 MiB (16 instances)
NUMA:
  NUMA node(s):          2
  NUMA node0 CPU(s):     0-31,64-95
  NUMA node1 CPU(s):     32-63,96-127
Vulnerabilities:
  Gather data sampling:  Not affected
  Itlb multihit:         Not affected
  L1tf:                  Not affected
  Mds:                   Not affected
  Meltdown:              Not affected
  Mmio stale data:       Not affected
  Retbleed:              Mitigation; untrained return thunk; SMT enabled with STIBP protection
  Spec rstack overflow:  Mitigation; Safe RET
  Spec store bypass:     Mitigation; Speculative Store Bypass disabled via prctl
  Spectre v1:            Mitigation; usercopy/swapgs barriers and __user pointer sanitization
  Spectre v2:            Mitigation; Retpolines, IBPB conditional, STIBP always-on, RSB filling, PBRSB-eIBRS Not affected
  Srbds:                 Not affected
  Tsx async abort:       Not affected


Bash:
Linux psi-pve-01 6.5.13-3-pve #1 SMP PREEMPT_DYNAMIC PMX 6.5.13-3 (2024-03-20T10:45Z) x86_64 GNU/Linux
 
Is „only“ the desktop experience slow but the VM itself is performing good? What vGPU did you assign? Default? VirtIO? It‘s possible that you‘ll have to update the VirtIO drivers for the VM. Had this phenomenom also on a 2k19 and 2k22 server.
 
The VM performing good, only the desktop experience is slow.
For the vGPU I user default. I cannot test on a 2k19, i have only two 2k22 servers.
QEMU drivers are up to date.
 
CWT Makes a good point, you can also increase the virtual graphical memory allocated to the server. However, the "best" available graphical performance improvement would be with a passthrough GPU. Second to that would be a GPU owned by the hypervisor and then virtualized to the VM (or multiple VMs, which is the benefit of having it owned by the hypervisor instead of directly passed through to a single VM). This is known as VirGL, by the way. Very exciting times to have VirGL around...

Another consideration: https://pve.proxmox.com/wiki/Windows_2022_guest_best_practices Consider reviewing the Devices section of Computer Management for missing drivers. Your VM appears to be configured optimally from the second post you made in this thread, nothing else strikes me as odd. Excel on Windows Server and LibreOffice Calc on Ubuntu Terminal Server hosts have always had artefacts in my experience, however, you may also find a few OS-specific changes on your RDS Server can help:
There are more options available, I'm sure, but these are what came to mind after operating a few RDS environments.
Cheers,


Tmanok
 
Last edited:
I changed to VirtIO GPU. I'll try to reboot the server today.
In addition to the points mentioned by @Tmanok you can restrict the RDP transport protocol to TCP only via GPO:

Computer Configuration / Administrative Templates/ Windows Components/ Remote Desktop Services/ Remote Desktop Session Host/ Connections/ "Select RDP transport protocols" -> TCP only

And remember that changes in hardware (VirtIO GPU) become only effective when the VM is powered off. If only rebooted, hardware changes are not applied.
 
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Reactions: Tmanok
I've managed to solve the problem: I've updated all the firmware on my servers and the slow performance has disappeared. Thanks for all your help!
 

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