Mike Sandford questions

Mike Sandford answers

• Select only one table row on high parallel connections
• memory allocation and access on NUMA hardware
• Data structure / approach for efficient raytracing
• Can perf-stat results be generated from a perf.data file?
• What caused my elapsed time much longer than user time?
• SWIG Python bindings to native code not working with OpenCV 2.1
• Python 3.4 multiprocessing Queue faster than Pipe, unexpected
• Any way to prevent linux kernel to migrate threads to other cpus
• Exiting a multiprocessed python application safely
• Use only the most recent value read from an Arduino in a python script, not the values stored in the buffer?