Re: [Xen-users] Limit on Number of VMs?

[Peter Braun <xenware@xxxxxxxxx>]

Hi,

ty dedicate dom0 memory:

 kernel /xen.gz-2.6.18-164.6.1.el5 dom0_mem=1GB

or higher


Peter

2009/11/26 Chen Peng <chenpenghit@xxxxxxxxx>:
> Hi All,
>
> I am wondering if there is any limit on the number of VMs supported by Xen.
> I was trying to create as more VMs as possible on my server.
> When I had started about 150 VMs, the newly created VMs just crashed.
> The error messages suggested  that the hypervisor could not allocate memory 
> pages for the newly created VMs.
> But the output messages of xentop command showed that there was enough memory 
> space left.
> My grub.conf is:
> title CentOS (2.6.18-164.6.1.el5xen)
>        root (hd0,0)
>        kernel /xen.gz-2.6.18-164.6.1.el5
>        module /vmlinuz-2.6.18-164.6.1.el5xen ro root=/dev/VolGroup00/LogVol00
>        module /initrd-2.6.18-164.6.1.el5xen.img
> My Xen version number is 3.1.2(x86_64).
> My server configuration is:
> Intel 16 core SMP CPU
> 72G Memory
> 1TB HDD
>
> Could anyone give me some hints?
> Many thanks!
>
> --
> Chen Peng
>
>
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> Xen-users@xxxxxxxxxxxxxxxxxxx
> http://lists.xensource.com/xen-users
>

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