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Re: [Xen-users] LVM over FC-San poor performance
| To: | Mice <mice1982@xxxxxxxxx> |
|---|---|
| Subject: | Re: [Xen-users] LVM over FC-San poor performance |
| From: | "Fajar A. Nugraha" <list@xxxxxxxxx> |
| Date: | Tue, 19 Apr 2011 16:15:10 +0700 |
| Cc: | xen-users@xxxxxxxxxxxxxxxxxxx |
| Delivery-date: | Tue, 19 Apr 2011 02:17:29 -0700 |
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On Tue, Apr 19, 2011 at 3:26 PM, Mice <mice1982@xxxxxxxxx> wrote: > All VMs are HVM. > > when dd the lv from dom0, the performance is acceptable, range from 150 ~ > 300MB/s > but when dd the local disk in guestOS (centOS 5.5 domU), the peformance is > poor, about 40MB/s > > my question is, is this normal? if not, any clues for performance tuning? AFAIK it is. That's the consequence of using HVM. I suggest you try with PV domU and see how it goes. -- Fajar _______________________________________________ Xen-users mailing list Xen-users@xxxxxxxxxxxxxxxxxxx http://lists.xensource.com/xen-users |
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