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anak10thn/README.md

Forked from billywhizz/README.md
Created September 18, 2023 15:40
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readFileSync benchmark
Raw
README.md

File benchmarks in JavaScript

Requirement: We assume that have macOS or Linux. Windows is not supported.

Run the bash script script.sh (e.g., type bash script.sh). It will install nvm and bun in your user account, if needed.

The benchmark simply reads the current README.md file, as quickly as possible.

Sample Results

runtime: bun 1.0.0 (arm64-darwin)

benchmark      time (avg)             (min … max)       p75       p99      p995
------------------------------------------------- -----------------------------
README.md    8.08 µs/iter     (7.88 µs … 9.04 µs)   8.07 µs   9.04 µs   9.04 µs

Now using node v20.6.1 (npm v9.8.1)
cpu: Apple M2
runtime: node v20.6.1 (arm64-darwin)

benchmark      time (avg)             (min … max)       p75       p99      p995
------------------------------------------------- -----------------------------
README.md   13.38 µs/iter  (12.33 µs … 279.67 µs)  13.08 µs     18 µs  22.92 µs

Restoring node version to v20.6.1
Now using node v20.6.1 (npm v9.8.1)

cpu: Intel(R) Xeon(R) Gold 6338 CPU @ 2.00GHz
runtime: bun 1.0.0 (x64-linux)

benchmark      time (avg)             (min … max)       p75       p99      p995
------------------------------------------------- -----------------------------
README.md    2.57 µs/iter     (2.45 µs … 2.98 µs)   2.56 µs   2.98 µs   2.98 µs

Now using node v20.6.1 (npm v9.8.1)
cpu: Intel(R) Xeon(R) Gold 6338 CPU @ 2.00GHz
runtime: node v20.6.1 (x64-linux)

benchmark      time (avg)             (min … max)       p75       p99      p995
------------------------------------------------- -----------------------------
README.md    9.68 µs/iter     (8.28 µs … 1.25 ms)   9.16 µs  13.56 µs  15.95 µs

Restoring node version to v20.6.1
Now using node v20.6.1 (npm v9.8.1)
Raw
bench.mjs
const AD = '\u001b[0m' // ANSI Default
const AG = '\u001b[32m' // ANSI Green
const AY = '\u001b[33m' // ANSI Yellow
const colors = { AD, AG, AY }
function pad (v, size, precision = 0) {
return v.toFixed(precision).padStart(size, ' ')
}
function findmem (str) {
const space = ' '
let spaces = 0
let last = 0
while (spaces < 24) {
const i = str.indexOf(space, last)
if (i > 0) {
if (spaces++ === 23) return (Number(str.slice(last, i)) * 4096) / 1024
last = i + 1
} else {
break
}
}
}
const decoder = new TextDecoder()
async function wrap_mem_usage () {
if (globalThis.Deno) {
return () => Math.floor((Number((new TextDecoder()).decode(Deno.readFileSync('/proc/self/stat')).split(' ')[23]) * 4096) / (1024))
}
if (globalThis.Bun) {
const fs = require('node:fs')
return () => Math.floor((Number((new TextDecoder()).decode(fs.readFileSync('/proc/self/stat')).split(' ')[23]) * 4096) / (1024))
}
if (globalThis.process) {
const { readFileSync } = await import('node:fs')
return () => Math.floor((Number((new TextDecoder()).decode(readFileSync('/proc/self/stat')).split(' ')[23]) * 4096) / (1024))
}
if (globalThis.spin) {
const { pread, open } = spin.fs
const O_RDONLY = 0
const fd = open(`/proc/self/stat`, O_RDONLY)
const buf = spin.ptr(new Uint8Array(1024))
function readUsage () {
if (pread(fd, buf, 1024, 0) > 0) return findmem(decoder.decode(buf))
return 0
}
return readUsage
}
if (globalThis.just) {
return () => Math.floor(Number(just.memoryUsage().rss) / 1024)
}
}
const mem = await wrap_mem_usage()
function formatNanos (nanos) {
if (nanos >= 1000000000) return `${AY}sec/iter${AD} ${pad((nanos / 1000000000), 10, 2)}`
if (nanos >= 1000000) return `${AY}ms/iter${AD} ${pad((nanos / 1000000), 10, 2)}`
if (nanos >= 1000) return `${AY}μs/iter${AD} ${pad((nanos / 1000), 10, 2)}`
return `${AY}ns/iter${AD} ${pad(nanos, 10, 2)}`
}
function bench (name, fn, count, after) {
const start = performance.now()
for (let i = 0; i < count; i++) fn()
const elapsed = (performance.now() - start)
const rate = Math.floor(count / (elapsed / 1000))
const nanos = 1000000000 / rate
const rss = mem()
console.log(`${name.slice(0, 32).padEnd(17, ' ')} ${pad(Math.floor(elapsed), 6)} ms ${AG}rate${AD} ${pad(rate, 10)} ${formatNanos(nanos)} ${AG}rss${AD} ${rss}`)
//console.log(`${name.slice(0, 32).padEnd(17, ' ')} ${pad(Math.floor(elapsed), 6)} ms ${AG}rate${AD} ${pad(rate, 10)} ${formatNanos(nanos)}`)
after()
return { name, count, elapsed, rate, nanos }
}
async function benchAsync (name, fn, count, after) {
const start = performance.now()
for (let i = 0; i < count; i++) await fn()
const elapsed = (performance.now() - start)
const rate = Math.floor(count / (elapsed / 1000))
const nanos = 1000000000 / rate
const rss = system.getrusage()[0]
console.log(`${name.slice(0, 32).padEnd(17, ' ')} ${pad(Math.floor(elapsed), 6)} ms ${AG}rate${AD} ${pad(rate, 10)} ${formatNanos(nanos)} ${AG}rss${AD} ${rss}`)
after()
return { name, count, elapsed, rate, nanos }
}
if (globalThis.spin) {
globalThis.performance = { now: () => spin.hrtime() / 1000000 }
globalThis.assert = spin.assert
} else {
if (!globalThis.performance && globalThis.just) {
globalThis.performance = { now: () => just.hrtime() / 1000000 }
}
function assert (condition, message, ErrorType = Error) {
if (!condition) {
throw new ErrorType(message || "Assertion failed")
}
}
globalThis.assert = assert
}
if (globalThis.Deno) {
globalThis.args = Deno.args
} else if (globalThis.process) {
globalThis.args = process.argv.slice(2)
} else if (globalThis.spin) {
globalThis.args = spin.args.slice(2)
}
globalThis.colors = colors
const runAsync = async (name, fn, count, repeat = 10, after = () => {}) => {
const runs = []
for (let i = 0; i < repeat; i++) {
runs.push(await benchAsync(name, fn, count, after))
}
return runs
}
const run = (name, fn, count, repeat = 10, after = () => {}) => {
const runs = []
for (let i = 0; i < repeat; i++) {
runs.push(bench(name, fn, count, after))
}
return runs
}
function arrayEquals (a, b) {
return Array.isArray(a) &&
Array.isArray(b) &&
a.length === b.length &&
a.every((val, index) => val === b[index])
}
class Bench {
#start = 0
#end = 0
#count = 0
#name = 'bench'
start (name = 'bench') {
this.#name = name.slice(0, 32).padEnd(17, ' ')
this.#start = Date.now()
}
end (count = 0) {
this.#end = Date.now()
this.#count = count
const elapsed = this.#end - this.#start
const rate = Math.floor(count / (elapsed / 1000))
console.log(`${this.#name} ${pad(Math.floor(elapsed), 6)} ms ${AG}rate${AD} ${pad(rate, 10)} ${formatNanos(1000000000 / rate)} ${AG}rss${AD} ${mem()}`)
}
}
globalThis.arrayEquals = arrayEquals
export { pad, formatNanos, colors, run, runAsync, Bench, mem }
Raw
decode.mjs
import { Bench } from './bench.mjs'
const smallUint8 = new Uint8Array([226, 132, 149, 32, 226, 138, 134, 32, 226, 132, 149, 226, 130, 128, 32, 226, 138, 130, 32, 226, 132, 164, 32, 226, 138, 130, 32, 226, 132, 154, 32, 226, 138, 130, 32, 226, 132, 157, 32, 226, 138, 130, 32, 226, 132, 130, 44, 32, 226, 138, 165, 32, 60, 32, 97, 32, 226, 137, 160, 32, 98, 32, 226, 137, 161, 32, 99, 32, 226, 137, 164, 32, 100, 32, 226, 137, 170, 32, 226, 138, 164, 32, 226, 135, 146, 32, 40, 65, 32, 226, 135, 148, 32, 66, 41, 44])
const bigUint8 = new Uint8Array([60, 33, 68, 79, 67, 84, 89, 80, 69, 32, 104, 116, 109, 108, 62, 10, 60, 104, 116, 109, 108, 32, 108, 97, 110, 103, 61, 34, 101, 110, 34, 62, 10, 10, 60, 104, 101, 97, 100, 62, 10, 32, 32, 32, 32, 60, 109, 101, 116, 97, 32, 99, 104, 97, 114, 115, 101, 116, 61, 34, 85, 84, 70, 45, 56, 34, 62, 10, 32, 32, 32, 32, 60, 116, 105, 116, 108, 101, 62, 104, 116, 116, 112, 98, 105, 110, 46, 111, 114, 103, 60, 47, 116, 105, 116, 108, 101, 62, 10, 32, 32, 32, 32, 60, 108, 105, 110, 107, 32, 104, 114, 101, 102, 61, 34, 104, 116, 116, 112, 115, 58, 47, 47, 102, 111, 110, 116, 115, 46, 103, 111, 111, 103, 108, 101, 97, 112, 105, 115, 46, 99, 111, 109, 47, 99, 115, 115, 63, 102, 97, 109, 105, 108, 121, 61, 79, 112, 101, 110, 43, 83, 97, 110, 115, 58, 52, 48, 48, 44, 55, 48, 48, 124, 83, 111, 117, 114, 99, 101, 43, 67, 111, 100, 101, 43, 80, 114, 111, 58, 51, 48, 48, 44, 54, 48, 48, 124, 84, 105, 116, 105, 108, 108, 105, 117, 109, 43, 87, 101, 98, 58, 52, 48, 48, 44, 54, 48, 48, 44, 55, 48, 48, 34, 10, 32, 32, 32, 32, 32, 32, 32, 32, 114, 101, 108, 61, 34, 115, 116, 121, 108, 101, 115, 104, 101, 101, 116, 34, 62, 10, 32, 32, 32, 32, 60, 108, 105, 110, 107, 32, 114, 101, 108, 61, 34, 115, 116, 121, 108, 101, 115, 104, 101, 101, 116, 34, 32, 116, 121, 112, 101, 61, 34, 116, 101, 120, 116, 47, 99, 115, 115, 34, 32, 104, 114, 101, 102, 61, 34, 47, 102, 108, 97, 115, 103, 103, 101, 114, 95, 115, 116, 97, 116, 105, 99, 47, 115, 119, 97, 103, 103, 101, 114, 45, 117, 105, 46, 99, 115, 115, 34, 62, 10, 32, 32, 32, 32, 60, 108, 105, 110, 107, 32, 114, 101, 108, 61, 34, 105, 99, 111, 110, 34, 32, 116, 121, 112, 101, 61, 34, 105, 109, 97, 103, 101, 47, 112, 110, 103, 34, 32, 104, 114, 101, 102, 61, 34, 47, 115, 116, 97, 116, 105, 99, 47, 102, 97, 118, 105, 99, 111, 110, 46, 105, 99, 111, 34, 32, 115, 105, 122, 101, 115, 61, 34, 54, 52, 120, 54, 52, 32, 51, 50, 120, 51, 50, 32, 49, 54, 120, 49, 54, 34, 32, 47, 62, 10, 32, 32, 32, 32, 60, 115, 116, 121, 108, 101, 62, 10, 32, 32, 32, 32, 32, 32, 32, 32, 104, 116, 109, 108, 32, 123, 10, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 98, 111, 120, 45, 115, 105, 122, 105, 110, 103, 58, 32, 98, 111, 114, 100, 101, 114, 45, 98, 111, 120, 59, 10, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 111, 118, 101, 114, 102, 108, 111, 119, 58, 32, 45, 109, 111, 122, 45, 115, 99, 114, 111, 108, 108, 98, 97, 114, 115, 45, 118, 101, 114, 116, 105, 99, 97, 108, 59, 10, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 111, 118, 101, 114, 102, 108, 111, 119, 45, 121, 58, 32, 115, 99, 114, 111, 108, 108, 59, 10, 32, 32, 32, 32, 32, 32, 32, 32, 125, 10, 10, 32, 32, 32, 32, 32, 32, 32, 32, 42, 44, 10, 32, 32, 32, 32, 32, 32, 32, 32, 42, 58, 98, 101, 102, 111, 114, 101, 44, 10, 32, 32, 32, 32, 32, 32, 32, 32, 42, 58, 97, 102, 116, 101, 114, 32, 123, 10, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 98, 111, 120, 45, 115, 105, 122, 105, 110, 103, 58, 32, 105, 110, 104, 101, 114, 105, 116, 59, 10, 32, 32, 32, 32, 32, 32, 32, 32, 125, 10, 10, 32, 32, 32, 32, 32, 32, 32, 32, 98, 111, 100, 121, 32, 123, 10, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 109, 97, 114, 103, 105, 110, 58, 32, 48, 59, 10, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 98, 97, 99, 107, 103, 114, 111, 117, 110, 100, 58, 32, 35, 102, 97, 102, 97, 102, 97, 59, 10, 32, 32, 32, 32, 32, 32, 32, 32, 125, 10, 32, 32, 32, 32, 60, 47, 115, 116, 121, 108, 101, 62, 10, 60, 47, 104, 101, 97, 100, 62, 10, 10, 60, 98, 111, 100, 121, 62, 10, 32, 32, 32, 32, 60, 97, 32, 104, 114, 101, 102, 61, 34, 104, 116, 116, 112, 115, 58, 47, 47, 103, 105, 116, 104, 117, 98, 46, 99, 111, 109, 47, 114, 101, 113, 117, 101, 115, 116, 115, 47, 104, 116, 116, 112, 98, 105, 110, 34, 32, 99, 108, 97, 115, 115, 61, 34, 103, 105, 116, 104, 117, 98, 45, 99, 111, 114, 110, 101, 114, 34, 32, 97, 114, 105, 97, 45, 108, 97, 98, 101, 108, 61, 34, 86, 105, 101, 119, 32, 115, 111, 117, 114, 99, 101, 32, 111, 110, 32, 71, 105, 116, 104, 117, 98, 34, 62, 10, 32, 32, 32, 32, 32, 32, 32, 32, 60, 115, 118, 103, 32, 119, 105, 100, 116, 104, 61, 34, 56, 48, 34, 32, 104, 101, 105, 103, 104, 116, 61, 34, 56, 48, 34, 32, 118, 105, 101, 119, 66, 111, 120, 61, 34, 48, 32, 48, 32, 50, 53, 48, 32, 50, 53, 48, 34, 32, 115, 116, 121, 108, 101, 61, 34, 102, 105, 108, 108, 58, 35, 49, 53, 49, 53, 49, 51, 59, 32, 99, 111, 108, 111, 114, 58, 35, 102, 102, 102, 59, 32, 112, 111, 115, 105, 116, 105, 111, 110, 58, 32, 97, 98, 115, 111, 108, 117, 116, 101, 59, 32, 116, 111, 112, 58, 32, 48, 59, 32, 98, 111, 114, 100, 101, 114, 58, 32, 48, 59, 32, 114, 105, 103, 104, 116, 58, 32, 48, 59, 34, 10, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 97, 114, 105, 97, 45, 104, 105, 100, 100, 101, 110, 61, 34, 116, 114, 117, 101, 34, 62, 10, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 60, 112, 97, 116, 104, 32, 100, 61, 34, 77, 48, 44, 48, 32, 76, 49, 49, 53, 44, 49, 49, 53, 32, 76, 49, 51, 48, 44, 49, 49, 53, 32, 76, 49, 52, 50, 44, 49, 52, 50, 32, 76, 50, 53, 48, 44, 50, 53, 48, 32, 76, 50, 53, 48, 44, 48, 32, 90, 34, 62, 60, 47, 112, 97, 116, 104, 62, 10, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 60, 112, 97, 116, 104, 32, 100, 61, 34, 77, 49, 50, 56, 46, 51, 44, 49, 48, 57, 46, 48, 32, 67, 49, 49, 51, 46, 56, 44, 57, 57, 46, 55, 32, 49, 49, 57, 46, 48, 44, 56, 57, 46, 54, 32, 49, 49, 57, 46, 48, 44, 56, 57, 46, 54, 32, 67, 49, 50, 50, 46, 48, 44, 56, 50, 46, 55, 32, 49, 50, 48, 46, 53, 44, 55, 56, 46, 54, 32, 49, 50, 48, 46, 53, 44, 55, 56, 46, 54, 32, 67, 49, 49, 57, 46, 50, 44, 55, 50, 46, 48, 32, 49, 50, 51, 46, 52, 44, 55, 54, 46, 51, 32, 49, 50, 51, 46, 52, 44, 55, 54, 46, 51, 32, 67, 49, 50, 55, 46, 51, 44, 56, 48, 46, 57, 32, 49, 50, 53, 46, 53, 44, 56, 55, 46, 51, 32, 49, 50, 53, 46, 53, 44, 56, 55, 46, 51, 32, 67, 49, 50, 50, 46, 57, 44, 57, 55, 46, 54, 32, 49, 51, 48, 46, 54, 44, 49, 48, 49, 46, 57, 32, 49, 51, 52, 46, 52, 44, 49, 48, 51, 46, 50, 34, 10, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 102, 105, 108, 108, 61, 34, 99, 117, 114, 114, 101, 110, 116, 67, 111, 108, 111, 114, 34, 32, 115, 116, 121, 108, 101, 61, 34, 116, 114, 97, 110, 115, 102, 111, 114, 109, 45, 111, 114, 105, 103, 105, 110, 58, 32, 49, 51, 48, 112, 120, 32, 49, 48, 54, 112, 120, 59, 34, 32, 99, 108, 97, 115, 115, 61, 34, 111, 99, 116, 111, 45, 97, 114, 109, 34, 62, 60, 47, 112, 97, 116, 104, 62, 10, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 60, 112, 97, 116, 104, 32, 100, 61, 34, 77, 49, 49, 53, 46, 48, 44, 49, 49, 53, 46, 48, 32, 67, 49, 49, 52, 46, 57, 44, 49, 49, 53, 46, 49, 32, 49, 49, 56, 46, 55, 44, 49, 49, 54, 46, 53, 32, 49, 49, 57, 46, 56, 44, 49, 49, 53, 46, 52, 32, 76, 49, 51, 51, 46, 55, 44, 49, 48, 49, 46, 54, 32, 67, 49, 51, 54, 46, 57, 44, 57, 57, 46, 50, 32, 49, 51, 57, 46, 57, 44, 57, 56, 46, 52, 32, 49, 52, 50, 46, 50, 44, 57, 56, 46, 54, 32, 67, 49, 51, 51, 46, 56, 44, 56, 56, 46, 48, 32, 49, 50, 55, 46, 53, 44, 55, 52, 46, 52, 32, 49, 52, 51, 46, 56, 44, 53, 56, 46, 48, 32, 67, 49, 52, 56, 46, 53, 44, 53, 51, 46, 52, 32, 49, 53, 52, 46, 48, 44, 53, 49, 46, 50, 32, 49, 53, 57, 46, 55, 44, 53, 49, 46, 48, 32, 67, 49, 54, 48, 46, 51, 44, 52, 57, 46, 52, 32, 49, 54, 51, 46, 50, 44, 52, 51, 46, 54, 32, 49, 55, 49, 46, 52, 44, 52, 48, 46, 49, 32, 67, 49, 55, 49, 46, 52, 44, 52, 48, 46, 49, 32, 49, 55, 54, 46, 49, 44, 52, 50, 46, 53, 32, 49, 55, 56, 46, 56, 44, 53, 54, 46, 50, 32, 67, 49, 56, 51, 46, 49, 44, 53, 56, 46, 54, 32, 49, 56, 55, 46, 50, 44, 54, 49, 46, 56, 32, 49, 57, 48, 46, 57, 44, 54, 53, 46, 52, 32, 67, 49, 57, 52, 46, 53, 44, 54, 57, 46, 48, 32, 49, 57, 55, 46, 55, 44, 55, 51, 46, 50, 32, 50, 48, 48, 46, 49, 44, 55, 55, 46, 54, 32, 67, 50, 49, 51, 46, 56, 44, 56, 48, 46, 50, 32, 50, 49, 54, 46, 51, 44, 56, 52, 46, 57, 32, 50, 49, 54, 46, 51, 44, 56, 52, 46, 57, 32, 67, 50, 49, 50, 46, 55, 44, 57, 51, 46, 49, 32, 50, 48, 54, 46, 57, 44, 57, 54, 46, 48, 32, 50, 48, 53, 46, 52, 44, 57, 54, 46, 54, 32, 67, 50, 48, 53, 46, 49, 44, 49, 48, 50, 46, 52, 32, 50, 48, 51, 46, 48, 44, 49, 48, 55, 46, 56, 32, 49, 57, 56, 46, 51, 44, 49, 49, 50, 46, 53, 32, 67, 49, 56, 49, 46, 57, 44, 49, 50, 56, 46, 57, 32, 49, 54, 56, 46, 51, 44, 49, 50, 50, 46, 53, 32, 49, 53, 55, 46, 55, 44, 49, 49, 52, 46, 49, 32, 67, 49, 53, 55, 46, 57, 44, 49, 49, 54, 46, 57, 32, 49, 53, 54, 46, 55, 44, 49, 50, 48, 46, 57, 32, 49, 53, 50, 46, 55, 44, 49, 50, 52, 46, 57, 32, 76, 49, 52, 49, 46, 48, 44, 49, 51, 54, 46, 53, 32, 67, 49, 51, 57, 46, 56, 44, 49, 51, 55, 46, 55, 32, 49, 52, 49, 46, 54, 44, 49, 52, 49, 46, 57, 32, 49, 52, 49, 46, 56, 44, 49, 52, 49, 46, 56, 32, 90, 34, 10, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 102, 105, 108, 108, 61, 34, 99, 117, 114, 114, 101, 110, 116, 67, 111, 108, 111, 114, 34, 32, 99, 108, 97, 115, 115, 61, 34, 111, 99, 116, 111, 45, 98, 111, 100, 121, 34, 62, 60, 47, 112, 97, 116, 104, 62, 10, 32, 32, 32, 32, 32, 32, 32, 32, 60, 47, 115, 118, 103, 62, 10, 32, 32, 32, 32, 60, 47, 97, 62, 10, 32, 32, 32, 32, 60, 115, 118, 103, 32, 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const decoder = new TextDecoder()
const bencher = new Bench()
const repeat = 5
while (1) {
for (let j = 0; j < repeat; j++) {
bencher.start('decodesmall')
for (let i = 0; i < 6000000; i++) decoder.decode(smallUint8)
bencher.end(6000000)
}
for (let j = 0; j < repeat; j++) {
bencher.start('decodebig')
for (let i = 0; i < 500000; i++) decoder.decode(bigUint8)
bencher.end(500000)
}
}
Raw
files.mjs
import { run } from './bench.mjs'
import { readFileSync } from 'node:fs'
function fn() {
const buf = readFileSync('./README.md', 'utf-8')
return buf.length
}
console.log(fn())
run('readFileSync', fn, 200000, 10)
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