cpu

I found this code on the web: package com.exercise.AndroidCPUinfo; import java.io.BufferedReader; import java.io.File; import java.io.FileReader; import java.io.IOException; import java.io.InputStream; import android.app.Activity; import android.os.Build; import android.os.Bundle; import android.widget.TextView; public class MainActivity extends Activity { /** * Called when the activity is first created. */ @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.main); TextView CPUinfo = (TextView) findViewById(R.id.CPUinfo);

Are machine word size (or smaller) writes serialized? Only one native opcode is needed to copy register content to RAM. Writing data to RAM is atomic. If two CPUs try to write to the same location at the same time, the memory controller will decide on some order for the writes. While one CPU is writing to memory, the other CPU will stall for as many cycles as necessary until the first write is completed; then it will overwrite its value. This is what's known as a race condition . Writes that are smaller than the native word size are not atomic -- in that case, the CPU must read the old memory

How I can find processor id with py2.6, windows OS? I know that there is pycpuid, but I can't compile this under 2.6. Ryan Ginstrom Have you tried wmi ? Here's a solution : >>> import wmi >>> c = wmi.WMI() >>> for s in c.Win32_Processor(): print s instance of Win32_Processor { AddressWidth = 64; Architecture = 9; Availability = 3; Caption = "Intel64 Family 6 Model 26 Stepping 5"; CpuStatus = 1; CreationClassName = "Win32_Processor"; CurrentClockSpeed = 3068; DataWidth = 64; Description = "Intel64 Family 6 Model 26 Stepping 5"; DeviceID = "CPU0"; ExtClock = 133; Family = 1; L2CacheSize = 1024;

Is it possible that a Process inside a VM guest uses the VMX (AMD-V, VT-x) CPU instructions, that are then processed by the outer VMM instead of directly on the CPU? Edit: Assume that the outer VM uses VMX itself to manage its virtual guest machine (i.e. it runs in Ring -1). If it is possible are there any implementations of VMMs that support emulating/intercepting VMX calls (VMware, Parallels, KVM,...)? Nor the Intel's VT-x nor the AMD's AMD-V support a fully recursive virtualization in hardware - where the CPU keep a hierarchy of nested virtualized environments in the same fashion of a call

How does multi-core processors handle interrupts. I know of how single core processors handle interrupts. I also know of the different types of interrupts. I want to know how multi core processors handle hardware, program, cpu time sequence and input/output interrupt This should be considered as a continuation for or an expansion of the other answer . Most multiprocessors support programmable interrupt controllers such as Intel's APIC. These are complicated chips that consist of a number components, some of which could be part of the chipset. At boot-time, all I/O interrupts are delivered to

Is anyway (any function etc) to show CPU cores utilization in MATLAB in a GUI likes that we have in Task Manager of windows (Performance Tab)? Thanks. To my knowledge, there are no Matlab function which can access the system properties at the level of the process usage. To get this information one must call external classes. A search on internet can fetch you some Java classes which can query the process properties. The advantage of the Java approach is it is more likely to be cross-platform. For windows user, there are still 2 ways of querying these information: by direct call to windows API

I had a question and was unable to find the answer (easily). On my Ubuntu installation, a kworker thread was consuming 100% CPU, which coused my computer to be very slow or crash at times. aMaia If you run the command: grep . -r /sys/firmware/acpi/interrupts/ and check for any high value like: /sys/firmware/acpi/interrupts/sci: 264 /sys/firmware/acpi/interrupts/error: 0 /sys/firmware/acpi/interrupts/gpe00: 264 enabled /sys/firmware/acpi/interrupts/gpe01: 0 invalid ... /sys/firmware/acpi/interrupts/gpe1F: 0 invalid /sys/firmware/acpi/interrupts/sci_not: 0 /sys/firmware/acpi/interrupts/ff