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Add the throughput for file_io

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LI Qing
2024-05-17 14:40:42 +08:00
committed by Tate, Hongliang Tian
parent 82220748c0
commit f19dfc7873
1 changed files with 5 additions and 1 deletions
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6
regression/apps/file_io/file_io.c
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@ -47,6 +47,7 @@ int perform_sequential_io(int fd, ssize_t (*io_func)(int, void *, size_t),
char buffer[BUFFER_SIZE]; char buffer[BUFFER_SIZE];
ssize_t ret, offset = 0; ssize_t ret, offset = 0;
long total_nanoseconds = 0, avg_latency; long total_nanoseconds = 0, avg_latency;
double throughput;
memset(buffer, 0, BUFFER_SIZE); memset(buffer, 0, BUFFER_SIZE);
lseek(fd, 0, SEEK_SET); lseek(fd, 0, SEEK_SET);
@ -67,9 +68,12 @@ int perform_sequential_io(int fd, ssize_t (*io_func)(int, void *, size_t),
} }
avg_latency = total_nanoseconds / NUM_OF_CALLS; avg_latency = total_nanoseconds / NUM_OF_CALLS;
throughput = ((double)BUFFER_SIZE * NUM_OF_CALLS) /
((double)total_nanoseconds / 1e9);
printf("Executed the sequential %s (buffer size: %dKB, file size: %dMB) syscall %d times.\n", printf("Executed the sequential %s (buffer size: %dKB, file size: %dMB) syscall %d times.\n",
op_name, BUFFER_SIZE / KB, FILE_SIZE / MB, NUM_OF_CALLS); op_name, BUFFER_SIZE / KB, FILE_SIZE / MB, NUM_OF_CALLS);
printf("Syscall average latency: %ld nanoseconds.\n", avg_latency); printf("Syscall average latency: %ld nanoseconds, throughput: %.2f MB/s\n",
avg_latency, throughput / MB);
return 0; return 0;
} }