| |
|
 |
|
 |
|
|
|
| |
|
|
xen-users
Re: [Xen-users] kernel-xen can not recognize more than 32 cores
Hi mohammad
By another kernel I mean kernel-xen from CentOS 5.5. The kernel has been
compiled for x86_64 architecture. So it is supposed to use more than 32
cores. I run xm dmesg command and Surprisingly I see 48 cores. But
catching /proc/cpuinfo and xm list gives me only 32 recognized cores.
What I need is just to make kernel and xen aware of all cores.
It is already aware of all the hardware, as "xm dmesg" shows you.
The kernel, dom0, is just a (special) domain. Last time I checked Xen
domains can support up to 32 cores. You will not be able to see more
within a single domain, but the Xen tools, and guests, can still use all
your cores.
It can be argued that you should assign a much smaller number of cores to
your dom0 anyway, via dom0-cpus in xend-config.sxp (or other ways).
My system has 48 cores, but just 2 assigned to dom0
# grep processor /proc/cpuinfo
processor : 0
processor : 1
# xm info | grep nr_cpus
nr_cpus : 48
Similarly my dom0 can see only up to 32 GB of RAM, but the system actually
has 256 GB, and anyway I limit dom0 to 10G via dom0_mem boot option.
YMMV,
Kevin
_______________________________________________
Xen-users mailing list
Xen-users@xxxxxxxxxxxxxxxxxxx
http://lists.xensource.com/xen-users
|
|
|
| |
|
Home