Re: [Xen-devel] SATA controller passthrough - option rom

[p.d@xxxxxx]

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)


-----------------------------------------------------------------------
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)

-----------------------------------------------------------------------
(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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