Re: Awful FreeBSD 9 block IO performance in KVM

2012-07-20 Thread Ivan Voras
On 19/07/2012 20:27, Richard Yao wrote: Dear Everyone, FreeBSD 9 has awful block IO performance in KVM. I have experienced it and others have experienced it. Someone posted slides to slideshare with benchmarks documenting it:

Re: Awful FreeBSD 9 block IO performance in KVM

2012-07-20 Thread Adrian Chadd
On 19 July 2012 11:27, Richard Yao r...@gentoo.org wrote: Dear Everyone, FreeBSD 9 has awful block IO performance in KVM. I have experienced it and others have experienced it. Someone posted slides to slideshare with benchmarks documenting it:

Re: Awful FreeBSD 9 block IO performance in KVM

2012-07-20 Thread Richard Yao
On 07/20/2012 03:44 PM, Adrian Chadd wrote: On 19 July 2012 11:27, Richard Yao r...@gentoo.org wrote: Dear Everyone, FreeBSD 9 has awful block IO performance in KVM. I have experienced it and others have experienced it. Someone posted slides to slideshare with benchmarks documenting it:

Re: Awful FreeBSD 9 block IO performance in KVM

2012-07-20 Thread Adrian Chadd
On 20 July 2012 15:26, Richard Yao r...@gentoo.org wrote: I am in the process of setting up a VM instance specifically for this. While installing it, I noticed that qemu-kvm printed 'lsi_scsi: error: ORDERED queue not implemented', which might be a clue as to why the block device performance

Re: Awful FreeBSD 9 block IO performance in KVM

2012-07-20 Thread Richard Yao
On 07/20/2012 06:26 PM, Richard Yao wrote: On 07/20/2012 03:44 PM, Adrian Chadd wrote: On 19 July 2012 11:27, Richard Yao r...@gentoo.org wrote: Dear Everyone, FreeBSD 9 has awful block IO performance in KVM. I have experienced it and others have experienced it. Someone posted slides to