34 lines
976 B
C
34 lines
976 B
C
/*
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* hashPerformance.c
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*
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* Created on: Aug 24, 2011
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* Author: sears
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*/
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#include <stasis/common.h>
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#include <stasis/util/hash.h>
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#include <stasis/util/time.h>
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#include <stdio.h>
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int main(int argc, char * argv[]) {
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char * foo = stasis_calloc(1024*1024*1024,char);
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struct timeval start, stop;
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gettimeofday(&start, 0);
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for(long i = 0; i < (1024*1024*1024/sizeof(long)); i++) {
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((long*)foo)[i] = i;
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}
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gettimeofday(&stop, 0);
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double elapsed = stasis_timeval_to_double(stasis_subtract_timeval(stop, start));
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printf("Took %f seconds to write to 1GB (%f mb/sec)\n", elapsed, (1024.0)/elapsed);
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long len = 1;
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for(long i = 0; i < 31; i++) {
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gettimeofday(&start, 0);
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stasis_crc32(foo, len, 0);
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gettimeofday(&stop, 0);
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elapsed = stasis_timeval_to_double(stasis_subtract_timeval(stop, start));
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printf("Took %f seconds to checksum %ld bytes (%f mb/sec)\n", elapsed, len, ((double)len)/((1024.0*1024.0)*elapsed));
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len *=2;
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}
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}
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