VM's inside Proxmox are running slow


New Member
Jul 13, 2023
VM's running inside Proxmox server are running slow in terms of performance, network. Below is the environment:
Version: Proxmox VE 7.3-3
Kernal: 5.15.74-1-pve
cpuinfo: bugs : cpu_meltdown spectre_v1 spectre_v2 spec_store_bypass l1tf mds swapgs taa itlb_multihit mmio_stale_data

qm config ID (The below vm info is of a migrated vm from VMware ESXi)
agent: 1
boot: order=ide0;ide2;net0
cores: 2
ide0: local-lvm:vm-130-disk-1,size=60G
ide2: none,media=cdrom
memory: 4096
meta: creation-qemu=7.1.0,ctime=1681137753
name: sit-hyd-psql-01-v01
net0: virtio=C6:0E:BF:7C:31:E2,bridge=vmbr0,firewall=1
numa: 0
ostype: l26
scsihw: virtio-scsi-single
smbios1: uuid=09af97c9-50a3-454c-8a33-1160faf7e834
sockets: 1
vmgenid: 48183370-5d5a-4783-bf70-b89053b203ee

agent: 1
boot: order=scsi1;ide2;net0
cores: 2
ide2: none,media=cdrom
memory: 8192
meta: creation-qemu=6.2.0,ctime=1666701109
name: oprj-hyd-adart
net0: virtio=FA:E4:32:B4:56:B3,bridge=vmbr0,firewall=1
numa: 0
ostype: l26
scsi1: local-lvm:vm-112-disk-0,size=60G
scsihw: pvscsi
smbios1: uuid=a5cfa025-fcb3-4035-aadc-f6df63f180be
sockets: 2
vmgenid: bde1757a-f95f-4090-a180-b53ab1508e21
Thanks for the quick reply.
Yes, both are running slow. How serious is the bug from cpuinfo?
what host cpu ?
if old, disabling mitigations in kernel option is mandatory to have regular performance.
missing the model cpu.. but it seems 9 years old cpu, so mitigations must be disabled for me.


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