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PAPI attach to child process

PostPosted: Mon Aug 17, 2015 7:11 pm
by ayazakram_89
Hi everyone !!
I am interested in behavior of a particular portion (interval of instructions) of benchmark. To analyze the behavior, I am attaching PAPI counters to child process (the benchmark) and then I keep on reading the counters from parent process to know when the particular interval of instructions starts, whose characteristics I want to observe. One problem with this strategy is that the counters sometimes seem to stop updating. Will counters not update properly if I am reading them continuously or with very small delay?? Any insights ??