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Re: [Xen-users] performace of disks
| To: | "Victor Hugo dos Santos" <listas.vhs@xxxxxxxxx>, xen-users@xxxxxxxxxxxxxxxxxxx |
|---|---|
| Subject: | Re: [Xen-users] performace of disks |
| From: | Fernando Jiménez Solano <fernandojs@xxxxxxxxxxxxxx> |
| Date: | Thu, 24 Jul 2008 19:39:08 +0200 |
| Cc: | |
| Delivery-date: | Thu, 24 Jul 2008 10:39:54 -0700 |
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On Thu, 24 Jul 2008 19:07:18 +0200, Victor Hugo dos Santos
<listas.vhs@xxxxxxxxx> wrote:
Hello, Queries: 1 - what is the best RAID (0,1,5,10,50) for server running very, very VM instances ??? 2 - and config of stripes/element sizes (32, 64, 128, 256, etc, KB) ?? I guess it depends more on the kind of disk activity of the VMs rather than the number of VMs. Database server? Desktop? Media streamer? As you may know, RAID 5 is the all around performer and large stripes give higher performance on large files. 3 - in the configuration of VM, exit one difference in performance between image file (disk:/) or LVM partition (phy:/) ??? I guess you mean file:/ instead of disk:/ They theory would say using a partition is faster, since it evades the inherent filesystem overhead of using a file. Experience-wise, 'tap:aio' performs better that 'file' while doing the same job, have it a look. _______________________________________________ Xen-users mailing list Xen-users@xxxxxxxxxxxxxxxxxxx http://lists.xensource.com/xen-users |
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