Re: [PATCH 0/6] tcm_vhost/virtio-scsi WIP code for-3.6

2012-07-09 Thread Nicholas A. Bellinger
Hi folks, On Wed, 2012-07-04 at 18:52 -0700, Nicholas A. Bellinger wrote: To give an idea of how things are looking on the performance side, here some initial numbers for small block (4k) mixed random IOPs using the following fio test setup: SNIP fio randrw workload | virtio-scsi-raw |

Re: SCSI Performance regression [was Re: [PATCH 0/6] tcm_vhost/virtio-scsi WIP code for-3.6]

2012-07-06 Thread Nicholas A. Bellinger
On Fri, 2012-07-06 at 17:49 +0400, James Bottomley wrote: On Fri, 2012-07-06 at 02:13 -0700, Nicholas A. Bellinger wrote: On Fri, 2012-07-06 at 09:43 +0400, James Bottomley wrote: On Thu, 2012-07-05 at 20:01 -0700, Nicholas A. Bellinger wrote: SNIP This bottleneck has been

Re: [Ksummit-2012-discuss] SCSI Performance regression [was Re: [PATCH 0/6] tcm_vhost/virtio-scsi WIP code for-3.6]

2012-07-06 Thread Christoph Lameter
On Fri, 6 Jul 2012, James Bottomley wrote: What people might pay attention to is evidence that there's a problem in 3.5-rc6 (without any OFED crap). If you're not going to bother investigating, it has to be in an environment they can reproduce (so ordinary hardware, not infiniband) otherwise

Re: [Ksummit-2012-discuss] SCSI Performance regression [was Re: [PATCH 0/6] tcm_vhost/virtio-scsi WIP code for-3.6]

2012-07-06 Thread Nicholas A. Bellinger
On Fri, 2012-07-06 at 15:30 -0500, Christoph Lameter wrote: On Fri, 6 Jul 2012, James Bottomley wrote: What people might pay attention to is evidence that there's a problem in 3.5-rc6 (without any OFED crap). If you're not going to bother investigating, it has to be in an environment