Re: [Xen-users] dom0 memory usage >1GB at startup (no domU's configured)

[stalks <xen-users@xxxxxxxxxxxxxxxxxx>]

On 04/04/2010 03:44, stalks wrote:
> Dear list,
>
> I have a new install of Debian Squeeze.
>
> I have followed the hints from the ParaVirtOps wiki page to grab 
> Jeremy's kernel sources from kernel.org and compiled a 2.6.31.x (and 
> 2.6.33.x) kernel.
> I have yet to install any significant software other than package 
> "xen-hypervisor-3.4-amd64".
> The machine is a Core i7 920 with 8GB RAM.
>
> If I boot the plain kernel (without xen-3.4.gz) I get ~65MB ram usage 
> shown in free -m.
> If I boot with full xen, bear in mind I have no domU's yet, I get the 
> following:
> > free -m
>              total       used       free     shared    buffers     cached
> Mem:          7948       1412       6535          0          9        107
> -/+ buffers/cache:       1295       6652
> Swap:            0          0          0
>
> > xm info
> host                   : oracle
> release                : 2.6.33.2-amd64-xen
> version                : #1 SMP Sun Apr 4 00:21:54 BST 2010
> machine                : x86_64
> nr_cpus                : 8
> nr_nodes               : 1
> cores_per_socket       : 4
> threads_per_core       : 2
> cpu_mhz                : 2660
> hw_caps                : 
> bfebfbff:28100800:00000000:00000340:0098e3bd:00000000:00000001:00000000
> virt_caps              : hvm
> total_memory           : 8183
> free_memory            : 2174
> node_to_cpu            : node0:0-7
> node_to_memory         : node0:2174
> xen_major              : 3
> xen_minor              : 4
> xen_extra              :
> xen_caps               : xen-3.0-x86_64 xen-3.0-x86_32p hvm-3.0-x86_32 
> hvm-3.0-x86_32p hvm-3.0-x86_64
> xen_scheduler          : credit
> xen_pagesize           : 4096
> platform_params        : virt_start=0xffff800000000000
> xen_changeset          : unavailable
> cc_compiler            : gcc version 4.4.3 (Debian 4.4.3-2)
> cc_compile_by          : waldi
> cc_compile_domain      : debian.org
> cc_compile_date        : Mon Mar  1 21:16:18 UTC 2010
> xend_config_format     : 4
>
> > xm top
>     xentop - 03:33:21   Xen 3.4
>     1 domains: 1 running, 0 blocked, 0 paused, 0 crashed, 0 dying, 0 
> shutdown
>     Mem: 8379516k total, 6152576k used, 2226940k free    CPUs: 8 @ 
> 2660MHz
> (free -m): Over 1GB used inside dom0 already?
> (xm info): Only 2GB available for guests?
>  (xm top): Over 6GB used?
>
> The only processes running outside of bare minimum are xinetd, 
> sendmail, mdadm and ssh.
> I can stop xend and xendomains from starting, and I still have 1GB 
> used at startup.
> The same setup on a lesser spec'd machine is working fine with ~140Mb 
> used at boot. I've spent a few hours on this and am at a loss.
> Some info can be found at the following sources:
>
> http://www.nooblet.org/other/xen-users/lspci.txt
> http://www.nooblet.org/other/xen-users/lspci-vv.txt
> http://www.nooblet.org/other/xen-users/cpuinfo.txt
> http://www.nooblet.org/other/xen-users/grub.txt
> http://www.nooblet.org/other/xen-users/dmesg.txt
> http://www.nooblet.org/other/xen-users/meminfo.txt
> http://www.nooblet.org/other/xen-users/ps-awwux.txt
>
> Someone show me the light!
>
> Regards,
> Steve.
>
> _______________________________________________
> Xen-users mailing list
> Xen-users@xxxxxxxxxxxxxxxxxxx
> http://lists.xensource.com/xen-users

I have just tried 4.0.0 rc9 (xen-unstable.hg) and 2.6.32.10 with the 
same results.
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