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42 lines
865 B
C++
42 lines
865 B
C++
#if defined(__linux__)
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#include <Common/ProcfsMetricsProvider.h>
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#include <iostream>
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#include <linux/taskstats.h>
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#endif
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#if defined(__linux__)
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int main(int argc, char ** argv)
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{
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using namespace DB;
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size_t num_iterations = argc >= 2 ? std::stoull(argv[1]) : 1000000;
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if (!ProcfsMetricsProvider::isAvailable())
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{
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std::cerr << "Procfs statistics is not available on this system" << std::endl;
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return -1;
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}
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ProcfsMetricsProvider stats_provider(0);
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::taskstats stats;
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stats_provider.getTaskStats(stats);
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const auto start_cpu_time = stats.cpu_run_virtual_total;
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for (size_t i = 0; i < num_iterations; ++i)
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{
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stats_provider.getTaskStats(stats);
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}
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if (num_iterations)
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std::cerr << stats.cpu_run_virtual_total - start_cpu_time << '\n';
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return 0;
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}
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#else
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int main()
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{
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}
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#endif
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