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6982c74e11
``` $ dd if=/dev/zero bs=65536 count=500000 | ./stdio # C baseline 500000+0 records in 500000+0 records out 32768000000 bytes transferred in 4.126087 secs (7941664827 bytes/sec) c: size 32768000000 reads 500000 blocksize 65536 ``` ``` $ dd if=/dev/zero bs=65536 count=500000 | deno run stdio.js # Deno 500000+0 records in 500000+0 records out 32768000000 bytes transferred in 4.279032 secs (7657806719 bytes/sec) deno: size 32768000000 reads 500000 blocksize 65536 ```
29 lines
754 B
C
29 lines
754 B
C
// From https://github.com/just-js/benchmarks/tree/main/01-stdio
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// Copyright 2018-2022 the Deno authors. All rights reserved. MIT license.
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#include <stdlib.h>
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#include <stdio.h>
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#include <unistd.h>
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#include <errno.h>
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#include <string.h>
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int main(int argc, char *argv[]) {
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unsigned int blocksize = 65536;
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if (argc == 2) {
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blocksize = atoi(argv[1]);
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}
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char buf[blocksize];
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unsigned long size = 0;
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unsigned int reads = 0;
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int n = read(STDIN_FILENO, buf, blocksize);
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while (n > 0) {
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reads++;
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size += n;
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n = read(STDIN_FILENO, buf, blocksize);
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}
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if (n < 0) {
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fprintf(stderr, "read: %s (%i)\n", strerror(errno), errno);
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exit(1);
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}
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fprintf(stdout, "size %lu reads %u blocksize %u\n", size, reads, blocksize);
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} |