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Keywords: kernel mesurment, KTAU, TAU
The effect of the operating system on application performance is an increasingly important consideration in high performance computing. OS kernel measurement is key to understanding the performance influences and the interrelationship of system and user-level performance factors. The KTAU (Kernel TAU) methodology and Linux-based framework provides parallel kernel performance measurement from both a kernel-wide and process-centric perspective. The first characterizes overall aggregate kernel performance for the entire system. The second characterizes kernel performance when it runs in the context of a particular process. KTAU extends the TAU performance system with kernel-level monitoring, while leveraging TAUís measurement and analysis capabilities. We explain the rational and motivations behind our approach, describe the KTAU design and implementation, and show working examples on multiple platforms demonstrating the versatility of KTAU in integrated system / application monitoring.oped. Minimally, such an approach will require OS kernel performance monitoring.
Modified: Tue Aug 1 18:02:43 US/Pacific 2006
Created: Fri Jul 28 16:33:51 US/Pacific 2006
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