Re: [pve-devel] [PATCH pve-qemu-kvm] vma: set cache unsafe for performance

2016-07-27 Thread Eneko Lacunza
El 27/07/16 a las 09:45, elacu...@binovo.es escribió: This patch is a follow-up to Alexandre's rbd patch, so that we set cache unsafe during restore for performance. This is the same done in qemu-img convert, which defaults to unsafe cache. In our fixed ceph cluster this has given us a x4 boost

[pve-devel] [PATCH pve-qemu-kvm] vma: set cache unsafe for performance

2016-07-27 Thread elacunza
This patch is a follow-up to Alexandre's rbd patch, so that we set cache unsafe during restore for performance. This is the same done in qemu-img convert, which defaults to unsafe cache. In our fixed ceph cluster this has given us a x4 boost (from 15MB/s to 94MB/s) with a 44% sparse 10GB backup (