New answers tagged

1

taskset M command M is a bitmap that specifies CPU's – each bit corresponds to one core, so 1 means the first core, 2 the second, 4 the third etc.


0

Not tested with this particular package and architecture but generally it should work as long as configuration needed (e.g. Kernel version) is not too odd: Get Buildroot from https://buildroot.org/ Install the required packages from https://buildroot.org/downloads/manual/manual.html#requirement-mandatory Do make menuconfig, choose your architecture, Linux ...


1

open-vmware-tool is for running linux under VWMare. As you are using VirtualBox then you don't need it. If you remove it, then it cannot use the CPU. However, if you simply uninstall it with yum there is the possibility of it still running as it has already loaded. It might be worth rebooting the guest (CentOS) after you uninstall it, or alternatively ...


0

Looks to me like a hardware error, CPU or memory. If you have the possibility to use another CPU or swap memories in your PC, or try the same on another machine/CPU, you could rule out what hw is failing. Also you should update the firmwares of the BIOS and other hardware, it might help. Sometimes CPU microcode is refreshed with a BIOS update, that can ...


1

This is a hardware error. Specifically, it's an ECC memory error which was detected but not corrected. How can you tell? Pipe the output above through mcelog --ascii, and you'll get: Hardware event. This is not a software error. CPU 4 0 data cache TSC 22cd709f356 ADDR 5989fdd80 TIME 1462430327 Thu May 5 02:38:47 2016 Data cache ECC error (syndrome a0) ...


2

Tasks do represent the number of opened processes. (Note that I do not use the term "running" to avoid confusion.) You have to realize that not all opened processes consume CPU constantly. Each process can be in a number of different states: running: actively using CPU stopped: the process was stopped (paused) by the user defunc or zombie: process ...


0

A process is a running instance of a program. The numbers mean that 24 tasks are receiving inputs from the terminal while the rest are running in the background. There is a very good post here: http://www.makeuseof.com/answers/single-core-processor-run-multiple-tasks/ Also here to learn more about linux processes: http://www.linfo.org/process.html


1

Is is hardly documented and largely depends on a platform. For x86, next available id is assigned to CPU in the function generic_processor_info() So, for x86, cpu ids are depending on order in which we would call that function. It is called when APIC (interrupt controller) is initialized, while APIC settings are taken from ACPI MADT table and the ACPI ...


1

Based on your output of sensors, it appears that lm_sensors does not detect any fan speed reading. You should try running sensors-detect and answer yes to all questions to hopefully detect one that wasn't previously configured. If not, then it simply won't be possible to control those fans. The BIOS controls the fans with a PWM, but its control is usually ...


3

To debug problems with scheduling or applications performance on Linux, it is a good start to run task under perf stat. It reports statistics about the processor pipeline, its stalled cycles, or memory behaviour. Possible problems: Linux/Scheduler bug Intel HT is not keeping up with your threads Memory is not able to provide enough data for the program ...



Top 50 recent answers are included