10-15-2010
What is a CPU with 2C/4T?
Hi there,
I'm in the process of choosing a machine to be a server and I was wondering how to interpret CPU description.
Example1:
Intel® Pentium® G6950, 2C, 2.80GHz, 3M Cache
I understarnd there are 2 cores, each running at 2.80 GHz.
Example2:
Intel® Core™ i3-530, 2C/4T, 2.93GHz, 4M Cache
I understarnd there are 2 cores, each running at 2.93 GHz. But what is 4T?
Can help me/correct me about that?
Thanks
Santiago
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LEARN ABOUT CENTOS
libpfm_intel_coreduo
LIBPFM(3) Linux Programmer's Manual LIBPFM(3)
NAME
libpfm_intel_coreduo - support for Intel Core Duo/Solo processors
SYNOPSIS
#include <perfmon/pfmlib.h>
PMU name: coreduo
PMU desc: Intel Core Duo
DESCRIPTION
The library supports all Intel Yonah-based processors such as Intel Core Duo and Intel Core Solo processors.
MODIFIERS
The following modifiers are supported on Intel Core Duo processors:
u Measure at user level which includes privilege levels 1, 2, 3. This corresponds to PFM_PLM3. This is a boolean modifier.
k Measure at kernel level which includes privilege level 0. This corresponds to PFM_PLM0. This is a boolean modifier.
i Invert the meaning of the event. The counter will now count cycles in which the event is not occurring. This is a boolean modifier
e Enable edge detection, i.e., count only when there is a state transition. This is a boolean modifier.
c Set the counter mask value. The mask acts as a threshold. The counter will count the number of cycles in which the number of occur-
rences of the event is greater or equal to the threshold. This is an integer modifier with values in the range [0:255].
ENVIRONMENT VARIABLES
It is possible to force activation of the Intel Core Duo support using the LIBPFM_FORCE_PMU variable. The PMU name, coreduo, must be
passed. No additional options are supported.
AUTHORS
Stephane Eranian <eranian@gmail.com>
September, 2009 LIBPFM(3)