Re: Perf regression of netperf compared Xen 4.4 to origin/master

[Andrew Cooper <andrew.cooper3@citrix.com>]

On 02/07/14 17:52, Konrad Rzeszutek Wilk wrote:
> The test is pretty silly.
>
> I've 14 guests, and I make each guest run netperf against the other.
> I start with 1 pair, then 2 pairs, then up to 7. Each guest
> is 768 MB, runs in a RAMdisk and just has one vif. The box is
> a SuperMicro X8DB8+ with two E5520 and 12GB of RAM.
> The netperf runs for a minute. The guests are PVHVM and I am
> using qemu-upstream.  The guest configs are:
>
> builder='hvm'
> disk = [ 'file:/mnt/lab/bootstrap-x86_64/root_image.iso,hdc:cdrom,r']
> memory=768
> boot='d'
> vcpus=1
> serial='file:/var/log/xen/console-g-vm0.log'
> vnclisten='0.0.0.0'
> name='g-vm0'
> on_crash='preserve'
> # IP is 192.168.102.90
> vif = [ 'mac=00:0f:4b:01:01:00, bridge=switch' ]
> .. and naturally the ip, name and MAC change for each guest.
>
> The kernel for both the guest and domain 0 is the same - no
> configuration change. The Xen is built without debug=y.

What do you mean by this?  master has debugging enabled by default so
unless you build with debug=n, you will have a debug build.

~Andrew