![]() Here, we will include the definitions of the most common flags as described in the official document. Most Common Flags in /proc/cpuinfoĪ CPU can have hundreds of features that vary from model to model. For detailed information about all flags, see arch/x86/include/asm/cpufeature.h. When you have some spare time, take a look at the /proc filesystem on your Linux system for other system information you can find, including /proc/loadavg, /proc/vmstat, and much more.In the rest of the article, we will explain what the most common of these flags mean. And since virtually all modern processors have a cache line size of 64 bytes, alignas isnt useful unless you know your compiler supports alignas (64). The virtual size seems to be always 48 bits. user1686 at 8:15 Seems I see a variety of physical sizes, like 36 bits, 40 bits, and 46 bits. I hope these Linux processor and memory commands have been helpful. James also, the standard only requires alignas to support up to 16 bytes, so any higher value wont be portable. See how the world moved from 8-bit CPUs to 16-bit to 32-bit and then to 64-bit CPUs. Summary: Linux processor and memory commands When I issue the Linux memory information command, I see the following output:Īs you can see, my current Linux system has 2 GB RAM, with all the additional memory information shown there. Model name : Intel(R) Pentium(R) 4 CPU 3.00GHzįlags : fpu vme de pse tsc msr pae mce cx8 apic mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe constant_tsc pni monitor ds_cpl cid xtprįrom that output I can see my current system is a two-processor Intel system, with additional information about the Intel CPU (CPUs, actually). ![]() I want to compare the output of free -k to cat /proc/meminfo. I need an interpretation of /proc/meminfo output. When I issue that Linux processor information command on my current hardware system, I see this output: Red Hat Enterprise Linux (All Versions) Issue. (See below for sample output.) Linux processor command output With that said, below are 9 commands for getting info about your Linux CPU. To see your Linux memory information and memory stats use this command: processor : 0 model name : Intel (R) Xeon (R) CPU E5520 2.27GHz cache size : 8192 KB physical id : 0 siblings : 8 core id : 0 cpu cores : 4 address sizes : 40 bits physical, 48 bits virtual processor : 1 model name : Intel (R) Xeon (R) CPU E5520 2. (See below for sample processor output.) How to show Linux memory information In Chapter 2, we show you how you can use /proc/sys to change settings. First, we’ll take a look at the read-only parts of /proc. ![]() It can be used to obtain information about the system and to change certain kernel parameters at runtime (sysctl). ![]() To see what type of processor/CPU your computer system has, use this Linux command:Īs you can see, all you have to do is use the Linux cat command on this special /proc/cpuinfo file on your Linux system. The proc file system acts as an interface to internal data structures in the kernel. 4416.00 clflush size : 64 cachealignment : 64 address sizes : 39 bits physical. Linux FAQ: How can I find Linux processor and memory information? (Also written as, How can I find Linux CPU information?, How can I find Linux RAM information?) How to show the Linux CPU/processor cmdecho ((cat /proc/cpuinfo grep cores grep -o 0-9.
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