What is siblings in cpuinfo

Regarding Turbo Boost, I'm not familiar with that, but I don't see why they wouldn't all be boosted. But how to check frequency or check if cpu is turbo boosted? I would also argue that, in terms of high-level software, you are rather interested in processes see top , uptime. Which hardware unit deals with processes is ultimately matter of low-level software compilation, operating system.

The cpuinfo report abstracts out the fact that each physical processor one of several cpu's on a die can expand its computing powers by tech feats such as multithreading. It will regard 'anything' that can take care of one process at a time as a processor. In cpuinfo's accounting eye, the device capabilities do lead to the total count of "processors" — XavierStuvw. Update: Adding answers to the other questions.

Any method in ubuntu to get current cpu freq. And for a refined output:- lscpu grep Hz. MADTerry thanks but the others I am not clear, will do some research and edit my answer. Meanwhile lets see if someone else pops-in. You can try this in terminal: sudo lscpu This will give you an overview of your cpu physical trait. It's like the cashiers' point of view - or rather their supervisor's - they want them to be busy all the time.

Both measures are related but in no way identical. I already read it in articles. Anyway your answer contradicts Gilles answer.

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Show Threads. Show Posts. Registered User. Join Date: Oct I've read that "siblings" refers to hyperthreading, but that seems odd considering the contents of cpuinfo. Here's a part: Code :. Code :. Join Date: Nov I think this signifies that hyperthreading is off since siblings equals the number of cores. These threads are the core's logical capabilities. What is hyper threading technology in processor? Hyper-Threading is a technology used by some Intel microprocessor s that allows a single microprocessor to act like two separate processors to the operating system and the application program s that use it.

How check hyperthreading Linux? Note the ht flag in Listing 1 for CPUs 0 and 1. In the case of no Hyper-Threading support, the data will be displayed for processor 0 only. What games use more than 4 cores? Why getting more than 4 cores in a gaming CPU is a good thing Battlefield 1. BF1 is probably the best example of a game that uses more cores, and as we know, when EA pushes CPU tech with their battlefield series, that will often become a precedent for future games to follow.

Fallout 4. Grand Theft Auto V. Options --perf-bias , -b Sets a register on supported Intel processore which allows software to convey its policy for the relative importance of performance versus energy savings to the processor.

The range of valid numbers is , where 0 is maximum performance and 15 is maximum energy efficiency. The processor uses this information in model-specific ways when it must select trade-offs between performance and energy efficiency. This policy hint does not supersede Processor Performance states P-states or CPU Idle power states C-states , but allows software to have influence where it would otherwise be unable to express a preference. For example, this setting may tell the hardware how aggressively or conservatively to control frequency in the "turbo range" above the explicitly OS-controlled P-state frequency range.

It may also tell the hardware how aggressively it should enter the OS requested C- states. This option can be applied to individual cores only via the --cpu option, cpupower 1. Use cpupower -c all info -b to verify. The impact on power consumption and performance positiv or negativ heavily depends on processor support for deep sleep states, fre- quency scaling and frequency boost modes and their dependencies between other thread siblings and processor cores. Taken over from kernel documentation: Adjust the kernel's multi-core scheduler support.

RedHat Commands. OpenSolaris Commands. Linux Commands.