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perf [2014/08/17 23:49] – mikael.ohmanperf [2014/08/19 12:57] – [Perf] mikael.ohman
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 Perf has very small overhead, but only does statistical sampling. Perf has very small overhead, but only does statistical sampling.
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 +
 +//Users of perf will likely first need to turn off the restrictions before they are able to run ''perf record'' as normal users://
 +
 +''sudo sh -c "echo 0 > /proc/sys/kernel/kptr_restrict"''
 ===== Callgrind ===== ===== Callgrind =====
 Callgrind is a tool in valgrind, and should only be used on medium. This has a huge overhead, so expect OOFEM to run over a hundred times slower through valgrind. Callgrind is a tool in valgrind, and should only be used on medium. This has a huge overhead, so expect OOFEM to run over a hundred times slower through valgrind.
perf.txt · Last modified: 2014/08/22 00:11 by mikael.ohman