Hello everyone. I have two VMs on a bridge ( eg vmbr3 ) that is not assigned to any physical network card, that is, VMs are isolated on a LAN segment.
Both VMs have virtio bus, qcow2, virtio network card, 512 MB of RAM. At one point, I start a scp 3GB file ( eg /var/www/image.iso ) to copy from VM to another and transfer rate starts at normal speed and then extremely low to 360Kb/s or less. Both virtual disks are housed in the same PVE, I tested both virtual disks stored in /var/lib/vz ( ext3 ), in a stripped LVM 2 hard drives ( ext4 ), in an SSD ( ext4 ) and the results were the same. I also tried to increase the memory to 1024 MB to the VM and is the same. The network speed tests between VMs without the intervention of the hard drives ( iperf ) gives 6Gb/s. The host is not very powerful, but it works very well, is a core i3 with 4GB of RAM. PVE version is 3.4-3 ( not clustered ) While running scp, I monitor the CPU and read/write disk of the host and guests and was completely normal. Is there some kind of priority for such operations? Is there anything else I can try? Thanks -- Luis G. Coralle
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