/******************************************************************************* Copyright(C) Jonas 'Sortie' Termansen 2011. This program is free software: you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, either version 3 of the License, or (at your option) any later version. This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with this program. If not, see . benchsyscall.cpp Benchmarks the speed of system calls. *******************************************************************************/ #include #include int main(int /*argc*/, char* /*argv*/[]) { uintmax_t start; if ( uptime(&start) ) { perror("uptime"); return 1; } uintmax_t end = start + 1ULL * 1000ULL * 1000ULL; // 1 second size_t count = 0; uintmax_t now; while ( !uptime(&now) && now < end ) { count++; } printf("Made %zu system calls in 1 second\n", count); return 0; }