search for: sockets_per_node

...ng on an 8-node 128-way NUMA machine has exposed a problem with Xen''s nr_cpus calculation. In this case, since Xen cuts off recognized CPUs at 32, the machine appears to have 16 CPUs on the first and second nodes and none on the remaining nodes. Given this asymmetry, the calculation of sockets_per_node (which is later used to calculate nr_cpus) is incorrect: pi->sockets_per_node = num_online_cpus() /(num_online_nodes() * pi->cores_per_socket * pi->threads_per_core); The most straightforward solution is to remove sockets_per_node, and instead determine nr_cpus directly from num_onlin...

Once Xen calculates nr_nodes properly, all nr_cpu calculations based on nr_nodes * sockets_per_node * cores_per_socket * threads_per_core are broken. The easy fix is to replace those calculations with a new field, nr_cpus in physinfo which is calculated by num_online_cpus(). This patch does so and attempts to change all users over to nr_cpus field in physinfo. This patch touches arch/ia64/xen/...

This patch makes "xm info" show information on xen version, compile info, number of socket/core, etc... In order to do that, it extends physinfo hypercall to return number of socket, adds few functions to libxc and extends python wrapper correspondingly. Here is the output of new "xm info": -- system : Linux host : ubuntu xen_release

...there are none available. If I input xm info I get this one server 1: host : server1 release : 2.6.18-238.9.1.el5xen version : #1 SMP Tue Apr 12 18:53:56 EDT 2011 machine : x86_64 nr_cpus : 4 nr_nodes : 1 sockets_per_node : 1 cores_per_socket : 4 threads_per_core : 1 cpu_mhz : 2400 hw_caps : bfebfbff:20100800:00000000:00000940:0000e3bd:00000000:00000001 total_memory : 4095 free_memory : 383 node_to_cpu : node0:0-3 xen_major...

...gt;cpu_cap) *(q-1)=0; - return Py_BuildValue("{s:i,s:i,s:i,s:i,s:l,s:l,s:l,s:i,s:s}", - "threads_per_core", info.threads_per_core, - "cores_per_socket", info.cores_per_socket, - "sockets_per_node", info.sockets_per_node, - "nr_nodes", info.nr_nodes, - "total_memory", pages_to_kib(info.total_pages), - "free_memory", pages_to_kib(info.free_pages), -...

...2000-2006 Netfilter Core Team >[root@tst122 ~]# xm info >host : tst122 >release : 2.6.16-xen >version : #1 SMP Wed Apr 26 00:58:26 EDT 2006 >machine : i686 >nr_cpus : 1 >nr_nodes : 1 >sockets_per_node : 1 >cores_per_socket : 1 >threads_per_core : 1 >cpu_mhz : 2793 >hw_caps : >bfebfbff:20000000:00000000:00000180:0000e43d:00000000:00000001 >total_memory : 1023 >free_memory : 62 >xen_major : 3...

...( ret != 0 ) { @@ -460,12 +457,12 @@ unsigned int get_num_cpus(void) } xc_interface_close(xc_handle); - opts.cpu_freq = (double)op.u.physinfo.cpu_khz/1000.0; - - return (op.u.physinfo.threads_per_core * - op.u.physinfo.cores_per_socket * - op.u.physinfo.sockets_per_node * - op.u.physinfo.nr_nodes); + opts.cpu_freq = (double)physinfo.cpu_khz/1000.0; + + return (physinfo.threads_per_core * + physinfo.cores_per_socket * + physinfo.sockets_per_node * + physinfo.nr_nodes); } _______________________________________...

...lling registered ip_tables: (C) 2000-2006 Netfilter Core Team [root@tst122 ~]# xm info host : tst122 release : 2.6.16-xen version : #1 SMP Wed Apr 26 00:58:26 EDT 2006 machine : i686 nr_cpus : 1 nr_nodes : 1 sockets_per_node : 1 cores_per_socket : 1 threads_per_core : 1 cpu_mhz : 2793 hw_caps : bfebfbff:20000000:00000000:00000180:0000e43d:00000000:00000001 total_memory : 1023 free_memory : 62 xen_major : 3 xen_minor : 0 xen_...

...in 3.0 but I cant stay not updated. Thanks for any help. xm info: host : host.foo.com release : 2.6.18-53.1.4.el5xen version : #1 SMP Fri Nov 30 01:21:23 EST 2007 machine : x86_64 nr_cpus : 4 nr_nodes : 1 sockets_per_node : 2 cores_per_socket : 1 threads_per_core : 2 cpu_mhz : 2992 hw_caps : bfebfbff:20100800:00000000:00000180:0000641d total_memory : 4095 free_memory : 3246 xen_major : 3 xen_minor : 1 xen_extra...

...libs-3.0.3-94.el5_4.2 xen-3.0.3-94.el5_4.2 #xm info host : james.mas.nom.fr release : 2.6.18-164.6.1.el5.centos.plusxen version : #1 SMP Wed Nov 4 10:10:32 EST 2009 machine : x86_64 nr_cpus : 2 nr_nodes : 1 sockets_per_node : 1 cores_per_socket : 2 threads_per_core : 1 cpu_mhz : 2104 hw_caps : 178bfbff:ebd3fbff:00000000:00000010:00002001:00000000:0000011f total_memory : 4078 free_memory : 1738 node_to_cpu : node0:0-1 xen_major...

hi all i am trying to boot from rhel5.1 x86_64 image. with the following configuration kernel = "/usr/lib/xen/boot/hvmloader" builder=''hvm'' memory = 3048 name = "rhel51" vcpus=1 cpus = "" vif = [ ''type=ioemu, bridge=xenbr0'' ] disk = [ ''phy:/dev/cciss/c0d0p7,ioemu:hda,w'',

...vif2.4 The kernel and xen running is stock opensuse # xm info host : enterprise release : 2.6.22.17-0.1-xen version : #1 SMP 2008/02/10 20:01:04 UTC machine : x86_64 nr_cpus : 2 nr_nodes : 1 sockets_per_node : 1 cores_per_socket : 2 threads_per_core : 1 cpu_mhz : 2611 hw_caps : 178bfbff:ebd3fbff:00000000:00000010:00002001:00000000:0000001f total_memory : 4031 free_memory : 0 max_free_memory : 1106 max_para_memory : 1102...

...ture Control MSR. (XEN) VMX disabled by Feature Control MSR. -- #xm info host : linux-oo1w release : 2.6.16.21-0.8-xen version : #1 SMP Mon Jul 3 18:25:39 UTC 2006 machine : x86_64 nr_cpus : 4 nr_nodes : 1 sockets_per_node : 2 cores_per_socket : 2 threads_per_core : 1 cpu_mhz : 1995 hw_caps : bfebfbff:20100800:00000000:00000140:0004e33d:00000000:00000001 total_memory : 1018 free_memory : 61 max_free_memory : 794 xen_major : 3 xen...

...to work on xen. Here is what I am running root@personal:/etc/xen-tools# xm info host : personal release : 2.6.22-14-xen version : #1 SMP Tue Feb 12 09:27:26 UTC 2008 machine : i686 nr_cpus : 2 nr_nodes : 1 sockets_per_node : 1 cores_per_socket : 1 threads_per_core : 2 cpu_mhz : 3059 hw_caps : bfebfbff:00000000:00000000:00000080:00004400 total_memory : 2046 free_memory : 456 xen_major : 3 xen_minor : 1 xen_extra...

...e future. We''ve integrated in NUMA information into xentrace so we can track various points such as page allocator hits and misses as well as other information. In the process of implementing the trace, we also fixed some incorrect assumptions about the symmetry of NUMA systems w.r.t the sockets_per_node value. Details are available a later email with the patch. These patches have been tested on several IBM NUMA and non-NUMA systems: NUMA-aware systems: IBM Dual Opteron: 2 Node, 2 CPU, 4GB IBM x445 : 4 Node, 32 CPU, 32GB IBM x460 : 1 Node, 8 CPU, 16GB IBM x460 : 2...

I just upgraded my Fedora Core 5 Xen server from 1 gig or memory to 2. When I start the machine it begins to load the Xen kernel and then reboots. I can boot the machine on straight FC5 without Xen. If I put it back to 1 gig of memory Xen will boot fine. I looked in the xend.log and didn''t see anything. I do see some kind of page_fault error on the screen before the server reboots.

...Package: xen-hypervisor-3.0.3-1-amd64 debian0:/var/log/xen-tools# xm info host : debian0 release : 2.6.18-6-xen-amd64 version : #1 SMP Fri Dec 12 07:02:03 UTC 2008 machine : x86_64 nr_cpus : 4 nr_nodes : 1 sockets_per_node : 2 cores_per_socket : 2 threads_per_core : 1 cpu_mhz : 1995 hw_caps : bfebfbff:20100800:00000000:00000140:0004e33d:00000000:00000001 total_memory : 4095 free_memory : 776 xen_major : 3 xen_minor : 0 xen_...

...) , xm info shows the wrong memory: [root@localhost ~]# xm info host : localhost.localdomain release : 2.6.18-194.el5xen version : #1 SMP Fri Apr 2 16:16:54 EDT 2010 machine : i686 nr_cpus : 12 nr_nodes : 1 sockets_per_node : 1 cores_per_socket : 6 threads_per_core : 2 cpu_mhz : 2932 hw_caps : bfebfbff:2c100000:00000000:00000140:029ee3ff:00000000:00000001 total_memory : 15861 free_memory : 383 Should I reinstall the system and use 64Bit kernel, or...