SchedMon: A Performance and Energy Monitoring Tool for Modern Multi-cores

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• 作者：Luís Tani?a (34)
  Aleksandar Ilic (34)
  Pedro Tomás (34)
  Leonel Sousa (34)
  
• 关键词：Power and performance monitoring ; application characterization ; power and performance counters
• 刊名：Lecture Notes in Computer Science
• 出版年：2014
• 出版时间：2014
• 年：2014
• 卷：8806
• 期：1
• 页码：230-241
• 全文大小：1,648 KB
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• 作者单位：Luís Tani?a (34)
  Aleksandar Ilic (34)
  Pedro Tomás (34)
  Leonel Sousa (34)
  
  34. INESC-ID/IST, Universidade de Lisboa, Lisbon, Portugal
  
• ISSN：1611-3349

文摘

Accurate characterization of modern systems and applications requires run-time and simultaneous assessment of several execution-related parameters. Although hardware monitoring facilities in modern multi-cores allow low-level profiling, it is not always easy to convert the acquired data into insightful information. For this, a low-overhead monitoring tool (SchedMon) is proposed herein, which relies on hardware facilities and interacts with the operating system scheduler to capture the run-time behavior of single and multi-threaded applications, even in presence of nested parallelism. By tracking the attainable performance, power and energy consumption of monitored applications, SchedMon also allows their insightful characterization with the Cache-aware Roofline model. In addition, the proposed tool provides application monitoring, either in their entirety or at the level of the function calls, without requiring any changes to the original source code. Experimental results show that SchedMon introduces negligible execution overheads, while capturing the interference of several co-scheduled SPEC2006 applications.