If you have restrictions cgroups on your vm, this vm backups with this restrictions.
2016-02-16 12:02 GMT+02:00 Martin Waschbüsch <serv...@waschbuesch.it>: > > > Am 16.02.2016 um 10:32 schrieb Stefan Priebe - Profihost AG < > s.pri...@profihost.ag>: > > > > Am 16.02.2016 um 09:57 schrieb Martin Waschbüsch: > >> Hi Stefan, > > > >>> This is PVE 3.4 running Qemu 2.4 > >> > >> To me this looks like the compression is the limiting factor? What > speed do you get for this NFS mount when just copying an existing file? > > > > Which compression? There is only FS compression on the target side > > involed. I'm not using any compression on the source side. > > Sorry, reading the 26MB/s I just assumed it sort of HAD to be compressed > for it to be so slow... > What kind of storage backend do you use for the images on the source side? > Can you dd a disk image from that backend to the nfs mount with good speed? > > > Writing to the NFS is very fast: > > # du -sh /root/testfile > > 640M /root/testfile > > > > # dd if=/root/testfile of=/mnt/pve/vmbackup/dump/testfile bs=4M > oflag=direct > > 159+1 records in > > 159+1 records out > > 671088620 bytes (671 MB) copied, 0,855779 s, 784 MB/s > > That looks like there should be ample bandwidth. ;-) > > > Martin > _______________________________________________ > pve-devel mailing list > pve-devel@pve.proxmox.com > http://pve.proxmox.com/cgi-bin/mailman/listinfo/pve-devel >
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