[Xen-users] Re: Xen Disk I/O performance vs native performance: Xen I/O is definitely super super super slow

["DOGUET Emmanuel" <Emmanuel.DOGUET@xxxxxxxx>]

 

I have the same problem on my latest platform (2 plateforms on HP DL 360, 8GO, quad core...) and only on them.

 

The only difference between this and faster platform is that Raid Volume/Hardrive architecture is different. (same hardware, software...)

Dom0 have same speed on Older or New. only domU is x2 slower minmum. (with Oracle and dd ony 5Gb file)

 

New plateform (slow in DomU) : (Rhel51 and rhel53)

  RAID 5 for dom0 and 2 domU.

 

'Older' plateform : (rhel51)

  RAID 1 for dom0

  RAID 5 for 2 domU

 

I must try it on the future platform... but it's necessary to have hard-drive/RAID only for dom0?

 

Someone can confirm?

 

  Best regards.

 

 

 

---

Emmanuel Doguet

Ingénieur système Unix / DSI

Société MANE

Tél: 04 93 09 70 00, poste 1442

 

 

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