查詢系統CPU是否啟用超執行緒:cat /proc/cpuinfo | grep -e "cpu cores" -e "siblings" | sort | uniq
查詢系統CPU的物理核數:cat /proc/cpuinfo | grep "cpu cores" | uniq Tm2: “Thermal Monitor 2″ Decrease speed by reducing multipler and vcore. Usually hardware controlled in response to CPU temperature. Tm: “Thermal Monitor” Thermal throttling with IDLE instructions. Lm: “Long Mode,” which means the chip supports the AMD64 instruction set Svm: AMD “Pacifica” hardware virtualization technology
Vmx: Intel Vanderpool hardware virtualization technology
#Power management cpuinfo code#
Prevents arbitrary code running via buffer overflows. Introduces an imaginary second processor that doesn’t do much but lets you run threads in the same process a bit quicker. Lets you do a bunch of the same operation on different pieces of input: in a single clock tick. Pn: Processor Serial-Number only available on Pentium 3 Pse36: 36-bit Page Size Extensions: allows to map 4 MB pages into the first 64GB RAM, used with PSE. Sep: Sysenter/Sysexit Instructions SYSENTER is used for jumps to kernel memory during system calls, and SYSEXIT is used for jumps: back to the user code Pae: Physical Address Extensions: ability to access 64GB of memory only 4GB can be accessed at a time thoughĪpic: Onboard Advanced Programmable Interrupt Controller Tsc: Time Stamp Counter: support for RDTSC and WRTSC instructions Model name :Intel(R) Xeon(R) CPU E5520 2.27GHzįlags : fpu 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 syscall nx rdtscp lm constant_tsc ida nonstop_tsc pni monitor ds_cpl vmx est tm2 cx16 xtpr popcnt lahf_lmĪddress sizes : 40 bits physical, 48 bits virtual