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| From: | Paolo Bonzini |
| Subject: | Re: [Qemu-block] [PATCH v4 3/9] block: Add VFIO based NVMe driver |
| Date: | Wed, 10 Jan 2018 15:48:08 +0100 |
| User-agent: | Mozilla/5.0 (X11; Linux x86_64; rv:52.0) Gecko/20100101 Thunderbird/52.5.0 |
On 10/01/2018 15:43, Eric Blake wrote: > On 01/10/2018 03:18 AM, Fam Zheng wrote: >> This is a new protocol driver that exclusively opens a host NVMe >> controller through VFIO. It achieves better latency than linux-aio by >> completely bypassing host kernel vfs/block layer. >> >> $rw-$bs-$iodepth linux-aio nvme:// >> ---------------------------------------- >> randread-4k-1 10.5k 21.6k >> randread-512k-1 745 1591 >> randwrite-4k-1 30.7k 37.0k >> randwrite-512k-1 1945 1980 >> >> (unit: IOPS) >> >> The driver also integrates with the polling mechanism of iothread. >> >> This patch is co-authored by Paolo and me. > > Then shouldn't you include Paolo's S-o-b? If you want, it's here: Signed-off-by: Paolo Bonzini <address@hidden> I wrote perhaps 50-100 lines of code. Paolo > >> >> Signed-off-by: Fam Zheng <address@hidden> >> --- > >
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