Hi Luis On 06/02/2015 02:25 PM, Luis G. Coralle wrote: > 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.
What local sequencial write speed do you achieve in your VM ? To measure that you can install bonnie++ and run bonnie++ -d /tmp An example output is: django consummer hard drive 2014 jeudi 1 janvier 2015, 21:19:23 (UTC+0100) Version 1.97 ------Sequential Output------ --Sequential Input- --Random- Concurrency 1 -Per Chr- --Block-- -Rewrite- -Per Chr- --Block-- --Seeks-- Machine Size K/sec %CP K/sec %CP K/sec %CP K/sec %CP K/sec %CP /sec %CP django 7536M 729 96 106440 10 33460 4 4160 94 86945 5 188.3 3 Latency 17694us 229ms 9485ms 24075us 1151ms 3047ms here the number you're interested is Sequencial Output / Block / K /Sec on this system it translates to 103MB/s _______________________________________________ pve-user mailing list [email protected] http://pve.proxmox.com/cgi-bin/mailman/listinfo/pve-user
