VTune Amplifier

How to build and Install Vtune™ Amplifier Sampling Driver for Embedded/Mobile system

        Intel® VTune™ Amplifier uses a sampling driver to enable the hardware Event-Based Sampling (EBS) analysis. During  Intel System Studio production installation, the sampling driver can be installed for host system so that we can collect the performance data for applications that running on host system. However the sampling driver should also be installed on the target system if we want to collect the event-based sampling data for the application that running on target system.

  • Desenvolvedores
  • Android*
  • Linux*
  • Tizen*
  • Projeto Yocto
  • Android*
  • Internet das coisas
  • C/C++
  • Principiante
  • Intermediário
  • Intel® System Studio
  • VTune Amplifier
  • Sampling Driver
  • embedded development tools
  • Ferramentas de desenvolvimento
  • Performance Data Collection with Sampling Collector

            Sampling Collector (SEP) is a command-line tool for doing hardware-based sampling using event-based sampling (EBS). In this article, we will describe how to use SEP for Tizen* mobile system. The usage model described in this article is also applicable for Tizen* IVI system and other embedded Linux system. However for Tizen* IVI system, or an embedded system with ssh services enabled, using Vtune Amplifier remote data collection with ssh is recommended.

  • Desenvolvedores
  • Android*
  • Linux*
  • Tizen*
  • Projeto Yocto
  • C/C++
  • Principiante
  • Intermediário
  • Intel® VTune™ Amplifier
  • Intel® System Studio
  • VTune Amplifier
  • SEP
  • Sampling Collector
  • Ferramentas de desenvolvimento
  • 何为高精度CPU时间的性能数据收集?



    Intel® VTune™ Amplifier XE主要包含二种类型的性能数据收集:一种是用户模式下的数据收集和追踪分析, 还有一种就是基于硬件PMU事件的采样 (EBS)。

    本文仅讨论的第一种情形(热点分析,并行分析,锁和等待分析),并不需要管理员权限(administrator privilege),缺省使用的是OS timer作为中断源。如 CPU Sampling Interval 10ms 作为预制的delta。但是其本质是粗略的,难以精确到 晶振的ticks。另外的问题是,由于中断源的级别较低,中断也可能被其他的中断屏蔽,影响到精度。

    最近的产品更新,针对以上的“瑕疵”,缺省使用新的中断源-访问Event Tracing for Windows (ETW)。 ETW是一种内核级别的编程接口,追踪内核/程序的性能和提供Log文件。

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