lshw is a small tool to extract detailed information on the hardware configuration of the machine. Know more about inxi command – Click Here inxi shows system hardware, CPU, drivers, Xorg, Desktop, Kernel, GCC version(s), Processes, RAM usage, and a wide variety of other useful information. It is also used for forum technical support, as a debugging tool, to quickly ascertain user system configuration and hardware. inxi is a command line system information script built for for console and IRC. The primary purpose of inxi is for support, and sys admin use. It is available in most Linux distribution repositories, and also runs somewhat on BSDs. Inxi is a full featured CLI system information tool. The cpuinfo shows a detail information about the CPU. Most of it is read-only, but some files allow kernel variables to be changed. The proc filesystem is a pseudo-filesystem which provides an interface to kernel data structures. Proc is the process information pseudo-filesystem. There is also information about the CPU caches and cache sharing, family, model, bogoMIPS, byte order, and stepping. The information includes, for example, the number of CPUs, threads, cores, sockets, and Non-Uniform Memory Access (NUMA) nodes. The command output can be optimized for parsing or for easy readability by humans. lscpu gathers CPU architecture information from sysfs and /proc/cpuinfo. Read more of Sandra Henry-Stocker's Unix as a Second Language blog and follow the latest IT news at ITworld, Twitter and Facebook.Lscpu command displays information about the CPU architecture. Lm constant_tsc ida pni monitor ds_cpl vmx smx est tm2 cx16 xtpr popcnt lahf_lmĪddress sizes : 40 bits physical, 48 bits virtual Pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm syscall nx pdpe1gb rdtscp Model name : Intel(R) Xeon(R) CPU X5650 2.67GHzįlags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov Keep in mind that you would see the same basic information repeated 24 times if I wanted this posting to go on for another couple of pages. The information provided on each of the virtual processors on this particular system looks like this. So, two processors can swing a lot more processing power than is immediately obvious and /proc/cpuinfo This tells you that each of the physical processors has essentially twelves cores but, again, only because hyper-threading tells the system that for every physical core, there are two cores. The other clue is the number of "siblings" reported for each of the virtual processors: $ grep siblings /proc/cpuinfo The extra twelve tell us that multi-threading is also in use. If each processor has six cores, that would still only account for twelve virtual processors. In the system we've been looking at above, we saw two physical processors, 24 virtual processors and six cores. If the number of cores shown is less than the number of virtual processors, your system is multi-threading. This line will show up for each virtual processor. The way to tell how may cores you have is to look for "cpu cores" in your /proc/cpuinfo file. You might have more virtual processors than physical processors because your processors are mutli-core, because your processors are hyper-threaded, or both. That sounds much more interesting! Even this, however, doesn't tell you the whole story. $ grep "^processor" /proc/cpuinfo | wc -l You can count those by looking for lines that start with "processor". If your processors are multi-core, you need to know how many virtual processors you have. We likely have a lot more processing power than the number of CPUs indicates. processors, that's all we would have needed to know, but these days, that only tells us part of the story. There are two physical CPUs on this particular system. Note that any particular physical id may appear in the file more than once, so you want to sort lines that contain that string (e.g., "physical id : 0") to be sure that each gets counted only once. This tells you how many physical processors are on your system, but doesn't answer questions about how many cores or whether your system is using hyper-threading. $ grep "physical id" /proc/cpuinfo | sort | uniq | wc -l
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |