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perf: use fast api for io read/write sync (#15863)
``` $ 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 ```
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6982c74e11
4 changed files with 62 additions and 9 deletions
9
cli/bench/stdio/README.md
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9
cli/bench/stdio/README.md
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## `stdio` benchmarks
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Compile the C baseline and run the benchmark:
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```bash
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cc stdio.c -o stdio -O3
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time dd if=/dev/zero bs=65536 count=500000 | ./stdio
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time dd if=/dev/zero bs=65536 count=500000 | deno run stdio.js
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```
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29
cli/bench/stdio/stdio.c
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29
cli/bench/stdio/stdio.c
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// 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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}
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16
cli/bench/stdio/stdio.js
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16
cli/bench/stdio/stdio.js
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// 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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const blocksize = parseInt(Deno.args[0] || 65536);
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const buf = new Uint8Array(blocksize);
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let size = 0;
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let reads = 0;
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let n = Deno.stdin.readSync(buf);
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while (n > 0) {
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reads++;
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size += n;
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n = Deno.stdin.readSync(buf);
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}
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if (n < 0) throw new Error("Bad Read");
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console.log(`size ${size} reads ${reads} blocksize ${blocksize}`);
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@ -16,7 +16,6 @@ use deno_core::OpState;
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use deno_core::RcRef;
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use deno_core::Resource;
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use deno_core::ResourceId;
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use deno_core::ZeroCopyBuf;
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use once_cell::sync::Lazy;
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use std::borrow::Cow;
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use std::cell::RefCell;
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@ -683,32 +682,32 @@ pub fn op_print(
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})
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}
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#[op]
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#[op(fast)]
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fn op_read_sync(
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state: &mut OpState,
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rid: ResourceId,
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mut buf: ZeroCopyBuf,
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rid: u32,
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buf: &mut [u8],
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) -> Result<u32, AnyError> {
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StdFileResource::with_resource(state, rid, move |resource| {
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resource.with_inner_and_metadata(|inner, _| {
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inner
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.read(&mut buf)
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.read(buf)
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.map(|n: usize| n as u32)
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.map_err(AnyError::from)
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})
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})
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}
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#[op]
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#[op(fast)]
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fn op_write_sync(
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state: &mut OpState,
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rid: ResourceId,
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buf: ZeroCopyBuf,
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rid: u32,
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buf: &mut [u8],
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) -> Result<u32, AnyError> {
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StdFileResource::with_resource(state, rid, move |resource| {
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resource.with_inner_and_metadata(|inner, _| {
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inner
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.write_and_maybe_flush(&buf)
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.write_and_maybe_flush(buf)
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.map(|nwritten: usize| nwritten as u32)
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.map_err(AnyError::from)
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})
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