On 11/16/2016 08:52 AM, Dietmar Maurer wrote: > >> 1) First guest inside qcow2 image, located on NFS share (via 10gbit > > What values do you get with raw images? >
Just now converted guest's disk image to RAW, using default cache settings. Seeing much better results - same "dd" test now shows 145 MB/s write speeds: 541590+0 records out 35493642240 bytes (35 GB) copied, 245.511 s, 145 MB/s (dd if=/dev/zero of=test bs=64k count=550k conv=fdatasync) And I also tried same test over 1 gbit network, it shows acceptable results there as well: dd if=/dev/zero of=test bs=64k count=150k conv=fdatasync 153600+0 records in 153600+0 records out 10066329600 bytes (10 GB) copied, 94.1721 s, 107 MB/s So something is not good with QCOW2 disk format. Mikhail. _______________________________________________ pve-user mailing list [email protected] http://pve.proxmox.com/cgi-bin/mailman/listinfo/pve-user
