syusui-s

simdjson vs fastjson2 ベンチマーク比較

java-json-benchmarkリポジトリを使用して、simdjsonとfastjson2のデシリアライゼーション性能を比較しました。

実験環境

• CPU: AMD Ryzen 7840U (8物理コア / 16論理コア) (Zen 4)
• JDK: Eclipse Temurin 25
• コード: https://github.com/syusui-s/java-json-benchmark/tree/simdjson

syusui-s

すでにfiatjafさんがPRを作っていた nostr-protocol/nips#1561

---

移行しました

syusui-s

Yield benchmark

This is the new version of this: JavaScriptにおける各種yield方式のパフォーマンス計測

How to exec

make

syusui-s

{
  const sleepZeroMsgChannel = () => {
    return new Promise((resolve) => {
      const ch = new MessageChannel();
      ch.port1.addEventListener('message', () => resolve());
      ch.port2.postMessage(0);
      ch.port1.start();
    });
  };

syusui-s

/*
   Copyright 2023 Moyatani Shusui
   original code is made by akiomik
   https://github.com/akiomik/xk6-nostr

   Licensed under the Apache License, Version 2.0 (the "License");
   you may not use this file except in compliance with the License.
   You may obtain a copy of the License at

       http://www.apache.org/licenses/LICENSE-2.0

syusui-s

Damus relay behavior investigation

2023-09-06

relay.damus.io (strfry v1.9.4 30b8c38) returns events in incorrect order.

I would say the relay should be updated with the latest version.

And, no new version of strfry has been released for a long time, even though there have been many commits since the last release.

syusui-s

/**
 * To the extent possible under law, the person who associated CC0
 * with this work has waived all copyright and related or
 * neighboring rights to this work.
 *
 * https://creativecommons.org/publicdomain/zero/1.0/
 */
import fs from 'fs/promises';
import path from 'path';
import util from 'util';

syusui-s

class NostrEvent extends Event {
  constructor(event) {
    super('event');
    this.event = event;
  }
}

const createBatchSubscription = () => {
  let timer = null;
  let filters = [];

syusui-s

Keybase proof

I hereby claim:

• I am syusui-s on github.
• I am syusui_s (https://keybase.io/syusui_s) on keybase.
• I have a public key whose fingerprint is 0AC8 2BCD E410 214C 2116 2FB5 9E40 A52F 2CB9 BE6A

To claim this, I am signing this object:

syusui-s

node_modules/
package-lock.json