It's come to my attention that I very much lack understanding of how Ubuntu/Linux handles newer CPUs with multiple cores, multi-threading, and "turbo speeds".
Case in point, my laptop is currently running an Intel i5-2410M. The vendor lists it as having 2 cores, 4 threads, a clock speed of 2.3GHz, and a turbo speed of 2.9 GHz.
When I open System Monitor, it shows percent usages for 4 CPUs. Is that because of 4 threads??
Also, lshw returns this:
Code:
*-cpu
description: CPU
product: Intel(R) Core(TM) i5-2410M CPU @ 2.30GHz
vendor: Intel Corp.
physical id: 4
bus info: cpu@0
version: Intel(R) Core(TM) i5-2410M CPU @ 2.30GHz
serial: To Be Filled By O.E.M.
slot: CPU 1
size: 800MHz
capacity: 3800MHz
width: 64 bits
clock: 400MHz
capabilities: x86-64 fpu fpu_exception wp vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe syscall nx rdtscp constant_tsc arch_perfmon pebs bts rep_good nopl xtopology nonstop_tsc aperfmperf pni pclmulqdq dtes64 monitor ds_cpl vmx est tm2 ssse3 cx16 xtpr pdcm pcid sse4_1 sse4_2 x2apic popcnt tsc_deadline_timer xsave avx lahf_lm ida arat epb xsaveopt pln pts dtherm tpr_shadow vnmi flexpriority ept vpid cpufreq
configuration: cores=2 enabledcores=1 threads=2
(I bolded the parts that don't make sense.)
Also, lscpu gives this:
Code:
Architecture: x86_64
CPU op-mode(s): 32-bit, 64-bit
Byte Order: Little Endian
CPU(s): 4
On-line CPU(s) list: 0-3
Thread(s) per core: 2
Core(s) per socket: 2
Socket(s): 1
NUMA node(s): 1
Vendor ID: GenuineIntel
CPU family: 6
Model: 42
Stepping: 7
CPU MHz: 800.000
BogoMIPS: 4589.55
Virtualization: VT-x
L1d cache: 32K
L1i cache: 32K
L2 cache: 256K
L3 cache: 3072K
NUMA node0 CPU(s): 0-3
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