On Mon, May 11, 2009 at 08:11:52AM -0700, Joe Armstrong wrote:
>
>
>
> Pasi Kärkkäinen wrote:
> >
> >
> > Hopefully someone can come up with benchmarks/numbers.
> >
> > You could always run your own benchmarks? :-)
> >
> >
>
> Yes - I did that first thing... and got number for both disk and network
> I/O to within 1 or 2 % of native... nice.
>
> But, my little setup is not even close to a "real data center" setup, and no
> way I can get stability data in a few days of running small tests. I was
> hoping somebody (Oh, I don't know, maybe from Amazon...) would cough up some
> really good data on stability & I/O performance. Or maybe somebody out
> there would know where to find it. I'm looking but not a lot of luck so
> far. But if I find some I'll post it.
>
$ xm info
system : Linux
host : hostname
release : 2.6.11-xen0
version : #1 Mon Apr 4 13:51:34 EEST 2005
machine : i686
cores : 2
hyperthreads_per_core : 1
cpu_mhz : 996
memory : 1663
free_memory : 1259
$ uptime
09:01:18 up 880 days, 16:48, 1 user, load average: 0.00, 0.00, 0.00
That's old Xen 2.0 host running a couple of domUs.. no problems at all with
stability :)
last time it was down because of fan getting broken and the heat crashing the
host..
Another Xen 3.0 host:
# xm info
host : hostname.localdomain
release : 2.6.18-92.1.10.el5xen
version : #1 SMP Tue Aug 5 08:46:32 EDT 2008
machine : i686
nr_cpus : 2
nr_nodes : 1
sockets_per_node : 1
cores_per_socket : 2
threads_per_core : 1
cpu_mhz : 3010
hw_caps :
bfebfbff:20000000:00000000:00000180:0000e43d:00000000:00000001
total_memory : 4095
free_memory : 83
node_to_cpu : node0:0-1
xen_major : 3
xen_minor : 1
xen_extra : .2-92.1.10.el5
xen_caps : xen-3.0-x86_32p hvm-3.0-x86_32 hvm-3.0-x86_32p
xen_pagesize : 4096
platform_params : virt_start=0xf5800000
xen_changeset : unavailable
cc_compiler : gcc version 4.1.2 20071124 (Red Hat 4.1.2-42)
cc_compile_by : mockbuild
cc_compile_domain : centos.org
cc_compile_date : Tue Aug 5 07:34:25 EDT 2008
xend_config_format : 2
# uptime
09:05:07 up 271 days, 20:48, 1 user, load average: 0.01, 0.01, 0.00
That one is running multiple Linux domUs.. both debian and rhel/centos.
271 days ago it was rebooted because of Xen (centos) upgrade.
Hopefully others can give you more numbers/comments.
-- Pasi
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