6/9/2023 0 Comments Cat proc cpuinfo![]() Is there any way to find out if SpeedStep is enabled without going into the BIOS, i.e. I'm not sysadmin of these machines, but before I start bugging our sysadmins about this, I wanted to be sure that this is not the behaviour which is to be expected. However, a watch -n5 "cat /proc/cpuinfo | grep MHz" shows that the first six cores are constantly at 3067MHz, while cores 7-12 are always at 1600MHz. So it seems none of the processors are idling. Model name : Intel(R) Xeon(R) CPU X5675 3.07GHzįlags : 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 pbe syscall nx pdpe1gb rdtscp lm constant_tsc arch_perfmon pebs bts rep_good nopl xtopology nonstop_tsc aperfmperf pni dtes64 monitor ds_cpl vmx smx est tm2 ssse3 cx16 xtpr pdcm dca sse4_1 sse4_2 popcnt lahf_lm ida arat epb dts tpr_shadow vnmi flexpriority ept vpidĪddress sizes : 40 bits physical, 48 bits virtualĮDIT: htop shows all processors at 100%, and the load average is 24.66 24.33 24.67. However, I don't understand why the processor speed in the model name line differs from the cpu MHz number: processor : 11 As we have set virt to No Virtualisation at the beginning, no matches will print No Virtualisation.On a system running Gentoo Linux (3.1.6, x86_64), I have two six-core Intel Xeon CPUs (X5675).Ĭat /proc/cpuinfo correctly shows me 12 processors. A match will signified by the RSTART variable not being 0 and so we check this to find the type of virtualisatiion being utilised. When searching for lines beginning with flag, we search for strings svn or vmx using awk's match function. At the end, print the data in the required format using the variables created. Using /proc/cpuinfo and free -mh along with awk, search for the strings required, using : as the field delimited, set variables accordingly, splitting the output of free -mh further into an array called arr based on " " as the delimiter. piraspberrypi4: cat /proc/cpuinfo processor : 0 model name : ARMv7 Processor rev 3 (v7l) BogoMIPS : 108. Ive heard the RPi manufacturers cant change this without a lot of hassle, though. proc/cpuinfo Virtual File The /proc/cpuinfo virtual file contains information about the CPUs currently available in our system’s motherboard. I could swear the ARM A72 was supposed to be ARMv8, but I could be wrong. Power management: ts ttp tm stc 100mhzsteps hwpstate It will contain cpuinsecure if your kernel has the KPTI patch I've found that the KPTI patch has this piece of code: / Assume for now that ALL x86 CPUs are insecure / setupforcecpubug (X86BUGCPUINSECURE) And after the kernel update, you get: bugs : cpuinsecure PS. The command will list many files, but we’re only interested in the cpuinfo file, which happens to be inside the base directory. Model name : AMD Athlon(tm) II Neo N36L Dual-Core Processorįlags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush mmx fxsr sse sse2 ht syscall nx mmxext fxsr_opt pdpe1gb rdtscp lm 3dnowext 3dnow constant_tsc rep_good nopl nonstop_tsc cpuid extd_apicid pni monitor cx16 popcnt lahf_lm cmp_legacy svm extapic cr8_legacy abm sse4a 3dnowprefetch osvw ibs skinit wdt nodeid_msr hw_pstate vmmcall npt lbrv svm_lock nrip_saveīugs : tlb_mmatch apic_c1e fxsave_leak sysret_ss_attrs null_seg amd_e400 spectre_v1 spectre_v2Īddress sizes : 48 bits physical, 48 bits virtual $ free -m -h total used free shared buff/cache available I have spent some time searching for methods, but without luck, and maybe this is an interesting generic problem as involves taking the format of tables that a lot of info is held in and extracting as required so has some generic application. I would like to also combine this info with that of /proc/meminfo or free -mh, so: "AMD Athlon(tm) II Neo N36L Dual-Core Processor, 1300 MHz, 2 cores, 4.7 GB Memory (1.8 GB Free), SVM-Virtualization" with the below output, this would look like (with "1300.000" rounded to "1300") "AMD Athlon(tm) II Neo N36L Dual-Core Processor, 1300 MHz, 2 cores, VMX-Virtualization" (or "SVM-Virtualization" or "No Virtualization") I would like to extract something like the following on a single line:, MHz, cores, Į.g. ![]() I know that this sort of thing can often be a very simple trick for sed/awk experts (I don't know how to approach this ![]() I would like to pluck info from /proc/cpuinfo and /proc/meminfo (or free -m -h) "why not just ' yum install some-great-tool'?" is not ideal as all of this information is freely available to us right in /proc. The problem that I'm trying to solve is to produce portable output that I can display on all of the servers in our environment to show basic info at login using generic information on all CentOS / Red Hat systems. You can use one of the following command to find the number of physical CPU cores including all cores on Linux: lscpu command cat /proc/cpuinfo top or htop.
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