Re: [Xen-users] GPLPV benchmark results

[Andy Burns <lists.xensource.com@xxxxxxxxxxxxxx>]

On 14/07/2008 12:23, Sandro Sigala wrote:

> I tested in particular the disk performance and I noticed a decrease of I/O
> throughput, while at the same time a significant decrease of the VM CPU
> utilization.
So the fastest throughput you ever saw was 1.7MB/s?
What sized chunks does PassMark use?

I've not tested since -pre5, but roughly what I saw with IOmeter was this

Block  random  random  seq     seq     random  seq
size   rd      wr      rd      wr      rd/wr   rd/wr
=====  ======  ======  ======  ======  ======  =====
4KB    20MB/s  1MB/s   20MB/s  1MB/s   N/A     N/A
1MB    50MB/s  50MB/s  50MB/s  50MB/s  30MB/s  30MB/s

With two separate disks on one VM, I could get aggregate throughput of 
180MB/s.
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