Re: [Xen-devel] [PATCH] README, xen/Makefile: Update to Xen 4.5.0

[Pasi Kärkkäinen <pasik@xxxxxx>]

On Wed, Jan 07, 2015 at 10:27:37AM -0500, Konrad Rzeszutek Wilk wrote:
> > 
> > And I think there was optimizations to oxenstored to support up to 1000 VMs 
> > per host.. 
> 
> .. and that.
>

Actually I'm not sure anymore about "up to 1000 VMs per host".. I was certain I 
was reading about such number
in the discussion related to some patches about performance improvements 
related to VDI bootstorms on xen-devel, 
but I can't find a reference now..

So maybe we should drop that number.. and only state performance/scalability 
improvements for oxenstored.

Also the oxenstored fd limit was increased from 1024 to 4096,
and oxenstored switched from select() to poll() for increased 
scalability/performance.

-- Pasi

 
> diff --git a/README b/README
> index 4a9cac1..e2c9e83 100644
> --- a/README
> +++ b/README
> @@ -43,8 +43,9 @@ guests; and lower interrupt latency.
>  The toolstack has expanded to include support for: VM Generation ID (a
>  Windows 2012 Server requirement); Remus initial support (for high
>  availability) in libxl (since xend has been removed); libxenlight JSON
> -support and persistent configuration support, and systemd support; and
> -support in QEMU for expanding the PCI hole.
> +support, HVM guest direct kernel boot, and persistent configuration
> +support; systemd support; optimizations in oxenstored to support more
> +than 1000+ VMs; and support in QEMU for expanding the PCI hole.
>  
>  Lastly, we have removed the Python toolstack (xend).
>  

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