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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 21:20:51 +0200 |
| Cc: | |
| Delivery-date: | Thu, 24 Jul 2008 12:21:30 -0700 |
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On Thu, 24 Jul 2008 20:49:49 +0200, Victor Hugo dos Santos
<listas.vhs@xxxxxxxxx> wrote:
On Thu, Jul 24, 2008 at 1:39 PM, Fernando Jiménez Solano <fernandojs@xxxxxxxxxxxxxx> wrote:On Thu, 24 Jul 2008 19:07:18 +0200, Victor Hugo dos Santos <listas.vhs@xxxxxxxxx> wrote:[...]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 thanthe number of VMs. Database server? Desktop? Media streamer?mmmm.. mmmm.. and mmmm but.. all virtual disks aren't one big image for Dom0 ??? in other words, this type of data in the virtual disks is relevant ?? It's not the file or data itself but how the data is accessed. Large stripes tend to perform better on large files because large files are usually read in a sequential, non latency-critical manner. This isn't true for images, they're accessed just like the underlying filesystem is (with some overhead). That is, rather randomly. _______________________________________________ Xen-users mailing list Xen-users@xxxxxxxxxxxxxxxxxxx http://lists.xensource.com/xen-users |
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