Some users ask me:
>Hello Denis,
>I found one of your post about asus U3S6 passthrough.
>http://comments.gmane.org/gmane.comp.emulators.xen.devel/137586
>I may have the same problem as you (DomU cannot find the disk connected to the Marvell controller), and I would like to know if it's now working for you ?
>Have a good day.
>Regards,
>Nicolas
> briancho ** @gmail.com
Hello, Nicolas,
I have not found a solution.
The problem ist SATA-controllers own BIOS and his initialization in XEN-guest. So I refuse from Sata-controller.
XEN had bad disk performance in guest. I tried KVM with guest-image-file on SSD (mounted in Host system and through mainboard controller), here was best disk performance. But I needed graphic card in guest and I could not install the graphics card driver in KVM.
As You know XEN, as KVM based on Qemu. So I tried Qemu. This solution I have left me.
Following I attach my CrystalDiskMark tests.
-----------------------------------------------------------------------
CrystalDiskMark 3.0.2 x64 (C) 2007-2012 hiyohiyo
Crystal Dew World : http://crystalmark.info/
-----------------------------------------------------------------------
RAMDISK :)
* MB/s = 1,000,000 byte/s [SATA/300 = 300,000,000 byte/s]
Sequential Read : 5431.277 MB/s
Sequential Write : 5583.100 MB/s
Random Read 512KB : 6012.069 MB/s
Random Write 512KB : 6352.203 MB/s
Random Read 4KB (QD=1) : 668.879 MB/s [163300.6 IOPS]
Random Write 4KB (QD=1) : 626.097 MB/s [152855.7 IOPS]
Random Read 4KB (QD=32) : 666.919 MB/s [162822.1 IOPS]
Random Write 4KB (QD=32) : 595.098 MB/s [145287.6 IOPS]
Test : 1000 MB [R: 28.8% (2063.4/7168.0 MB)] (x5)
Date : 2012/10/31 1:28:05
OS : Windows 8 Professional [6.2 Build 9200] (x64)
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LVM RAID1, 2x Seagate HDD baracuda 11.7 ?
-----------------------------------------------------------------------
* MB/s = 1,000,000 byte/s [SATA/300 = 300,000,000 byte/s]
Sequential Read : 1853.501 MB/s
Sequential Write : 55.046 MB/s
Random Read 512KB : 1300.911 MB/s
Random Write 512KB : 28.900 MB/s
Random Read 4KB (QD=1) : 24.632 MB/s [ 6013.6 IOPS]
Random Write 4KB (QD=1) : 0.413 MB/s [ 100.9 IOPS]
Random Read 4KB (QD=32) : 82.125 MB/s [ 20050.0 IOPS]
Random Write 4KB (QD=32) : 0.736 MB/s [ 179.7 IOPS]
Test : 1000 MB [E: 53.4% (10.7/20.0 GB)] (x5)
Date : 2012/10/31 1:36:59
OS : Windows 8 Professional [6.2 Build 9200] (x64)
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(programme:\)qemu raw image file on SSD Vertex Agility 4:
-----------------------------------------------------------------------
* MB/s = 1,000,000 byte/s [SATA/300 = 300,000,000 byte/s]
Sequential Read : 2086.372 MB/s
Sequential Write : 148.418 MB/s
Random Read 512KB : 1230.134 MB/s
Random Write 512KB : 140.760 MB/s
Random Read 4KB (QD=1) : 36.603 MB/s [ 8936.2 IOPS]
Random Write 4KB (QD=1) : 6.762 MB/s [ 1650.9 IOPS]
Random Read 4KB (QD=32) : 78.257 MB/s [ 19105.8 IOPS]
Random Write 4KB (QD=32) : 6.946 MB/s [ 1695.7 IOPS]
Test : 1000 MB [H: 22.5% (4.9/21.9 GB)] (x5)
Date : 2012/10/31 1:45:31
OS : Windows 8 Professional [6.2 Build 9200] (x64)
Regards,
Denis
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