If we know the power of the underlying hardware, we can confiure our nodes better to achive the best performance and to have a better utilization..
Here is the specs of a ODA x4-2 node.. Note that, in a node, we have 2 cpus , 12 cores and 2 threads per core. So Hyper Threading is enabled. This makes 48 virtual cores..
Also, we have 256 gb memory per node and We use 2.6.39-4000 uek smp kernel with xen.
release : 2.6.39-400.126.1.el5uek
version : #1 SMP Fri Sep 20 10:54:38 PDT 2013
machine : x86_64
nr_cpus : 48
nr_nodes : 2
cores_per_socket : 12
threads_per_core : 2
cpu_mhz : 2693
hw_caps :
virt_caps : hvm hvm_directio
total_memory : 262086
free_memory : 192913
free_cpus : 0
xen_major : 4
xen_minor : 1
xen_extra : .3OVM
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
xen_commandline : dom0_mem=4096M crashkernel=256M@64M
cc_compiler : gcc version 4.1.2 20080704 (Red Hat 4.1.2-48)
cc_compile_by : mockbuild
cc_compile_domain : us.oracle.com
cc_compile_date : Mon Feb 4 16:40:15 PST 2013
xend_config_format : 4
Here is the specs of a ODA x4-2 node.. Note that, in a node, we have 2 cpus , 12 cores and 2 threads per core. So Hyper Threading is enabled. This makes 48 virtual cores..
Also, we have 256 gb memory per node and We use 2.6.39-4000 uek smp kernel with xen.
release : 2.6.39-400.126.1.el5uek
version : #1 SMP Fri Sep 20 10:54:38 PDT 2013
machine : x86_64
nr_cpus : 48
nr_nodes : 2
cores_per_socket : 12
threads_per_core : 2
cpu_mhz : 2693
hw_caps :
virt_caps : hvm hvm_directio
total_memory : 262086
free_memory : 192913
free_cpus : 0
xen_major : 4
xen_minor : 1
xen_extra : .3OVM
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
xen_commandline : dom0_mem=4096M crashkernel=256M@64M
cc_compiler : gcc version 4.1.2 20080704 (Red Hat 4.1.2-48)
cc_compile_by : mockbuild
cc_compile_domain : us.oracle.com
cc_compile_date : Mon Feb 4 16:40:15 PST 2013
xend_config_format : 4
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