Hello.
I have a Proxmox host and storage.
Proxmox host
Storage host
Virtual machine
Export NFS options
I connected storage on PVE with NSF (1 Gigabit) and can not get a record speed of more than 40 MB/s within the virtual machine. But getting a full opportunity to record the speed of the host console.
After switching from NSFv3 to NSFv4 speed has risen slightly, but still small.
Speed on storage
Speed on pve host
Speed in virtual machine
Why write speed is low within a virtual machine? After all, the PVE host writes at a speed of 3 times.
I have a Proxmox host and storage.
Proxmox host
Supermicro chassis
Intel Xeon E3-1220 v3
32 Gb RAM
root@vm1:~# pveversion -v
proxmox-ve: 4.1-26 (running kernel: 4.2.6-1-pve)
pve-manager: 4.1-1 (running version: 4.1-1/2f9650d4)
pve-kernel-4.2.6-1-pve: 4.2.6-26
lvm2: 2.02.116-pve2
corosync-pve: 2.3.5-2
libqb0: 0.17.2-1
pve-cluster: 4.0-29
qemu-server: 4.0-41
pve-firmware: 1.1-7
libpve-common-perl: 4.0-41
libpve-access-control: 4.0-10
libpve-storage-perl: 4.0-38
pve-libspice-server1: 0.12.5-2
vncterm: 1.2-1
pve-qemu-kvm: 2.4-17
pve-container: 1.0-32
pve-firewall: 2.0-14
pve-ha-manager: 1.0-14
ksm-control-daemon: 1.2-1
glusterfs-client: 3.5.2-2+deb8u1
lxc-pve: 1.1.5-5
lxcfs: 0.13-pve1
cgmanager: 0.39-pve1
criu: 1.6.0-1
zfsutils: 0.6.5-pve6~jessie
Storage host
Supermicro chassis
Intel Core i3-4170
Hardware RAID 8 disks: RAID 10 (6 disk) + 2 Hotspare
8 Gb RAM
Virtual machine
Windows 7 32-bit
VirtIO disk (driver version 0.1.102/0.1.113)
DIsk cache = None
Export NFS options
(rw,no_root_squash,sec=sys,rw,no_root_squash,no_all_squash)
I connected storage on PVE with NSF (1 Gigabit) and can not get a record speed of more than 40 MB/s within the virtual machine. But getting a full opportunity to record the speed of the host console.
After switching from NSFv3 to NSFv4 speed has risen slightly, but still small.
Speed on storage
root@ds1:~# dd if=/dev/zero of=/testfile.bin bs=256k count=20480
20480+0 records in
20480+0 records out
5368709120 bytes (5.4 GB) copied, 13.3617 s, 402 MB/s
Speed on pve host
root@vm1:~# dd if=/dev/zero of=/mnt/pve/ds1/testfile.bin bs=256k count=20480
20480+0 records in
20480+0 records out
5368709120 bytes (5.4 GB) copied, 48.0458 s, 112 MB/s (~ 1Gigabit)
Speed in virtual machine
Why write speed is low within a virtual machine? After all, the PVE host writes at a speed of 3 times.