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Re: [Xen-users] performace of disks
| To: | "Victor Hugo dos Santos" <listas.vhs@xxxxxxxxx> |
|---|---|
| Subject: | Re: [Xen-users] performace of disks |
| From: | "Grant McWilliams" <grantmasterflash@xxxxxxxxx> |
| Date: | Thu, 24 Jul 2008 15:54:52 -0700 |
| Cc: | Fernando Jiménez Solano <fernandojs@xxxxxxxxxxxxxx>, xen-users@xxxxxxxxxxxxxxxxxxx |
| Delivery-date: | Thu, 24 Jul 2008 15:55:30 -0700 |
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>3 - in the configuration of VM, exit one difference in performance
>between image file (disk:/) or LVM partition (phy:/) ??? I'm executing extensive lab based tests of various VM platforms and configurations. It won't be done for months but my testing of file vs. LVM disk images is nearly complete. I was expecting to see drastic differences in speed between the two but was fairly surprised that bonnie++ numbers were usually within 10% of each other at most. LVM overall is faster but not by the amount I would have expected. In half the cases the 10GB file was as fast as LVM. Disk IO of a VM accessing LVM was about another 10% off the Dom0 accessing the same LVM. Grant McWilliams _______________________________________________ Xen-users mailing list Xen-users@xxxxxxxxxxxxxxxxxxx http://lists.xensource.com/xen-users |
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