[Xen-users] xvd Device Performance

["Alan Lam" <alan@xxxxxxxxxxxxxx>]

Hi All,

 

Has anyone been able to get near native disk performance out of a xvdX device? The xvdX device maps to a LV disk partition.

 

From the DomU:

 

/dev/xvda:

Timing cached reads:   22960 MB in  1.98 seconds = 11578.12 MB/sec

Timing buffered disk reads:  152 MB in  3.01 seconds =  50.46 MB/sec

 

The disk that the xvda links to:

 

/dev/sdd:

Timing cached reads:   22992 MB in  1.98 seconds = 11600.27 MB/sec

Timing buffered disk reads:  308 MB in  3.01 seconds = 102.20 MB/sec

 

Regards,

Alan

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