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修复注册表问题并提高您的电脑性能
删除垃圾文件和不必要的程序文件
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轻松管理随 Windows 启动的程序和服务
轻松管理 Windows 系统还原点
易于使用的用户界面
自动更新至最新版本

https://www.hibitsoft.ir/Uninstaller.html

启动eth2.0 一段时间后，报如下错误

WARN [05-24|11:39:02.090] Served engine_forkchoiceUpdatedV3        conn=127.0.0.1:53124 reqid=355251 duration="74.273µs" err="Unsupported fork" errdata="{Error:forkchoiceUpdatedV3 must only be called for cancun payloads}"

查看代码
https://github.com/ethereum/go-ethereum/blob/b6474e9f90c88003de7d7eb993ddb5f60133172e/eth/catalyst/api.go#L213-L224

// ForkchoiceUpdatedV3 is equivalent to V2 with the addition of parent beacon block root
// in the payload attributes. It supports only PayloadAttributesV3.
func (api *ConsensusAPI) ForkchoiceUpdatedV3(update engine.ForkchoiceStateV1, params *engine.PayloadAttributes) (engine.ForkChoiceResponse, error) {
    if params != nil {
        if params.Withdrawals == nil {
            return engine.STATUS_INVALID, engine.InvalidPayloadAttributes.With(errors.New("missing withdrawals"))
        }
        if params.BeaconRoot == nil {
            return engine.STATUS_INVALID, engine.InvalidPayloadAttributes.With(errors.New("missing beacon root"))
        }
        if api.eth.BlockChain().Config().LatestFork(params.Timestamp) != forks.Cancun { // 关键代码
            return engine.STATUS_INVALID, engine.UnsupportedFork.With(errors.New("forkchoiceUpdatedV3 must only be called for cancun payloads"))
        }
    }

跟踪下代码，
https://github.com/ethereum/go-ethereum/blob/b6474e9f90c88003de7d7eb993ddb5f60133172e/params/config.go#L763-L778

// LatestFork returns the latest time-based fork that would be active for the given time.
func (c *ChainConfig) LatestFork(time uint64) forks.Fork {
    // Assume last non-time-based fork has passed.
    london := c.LondonBlock

    switch {
    case c.IsPrague(london, time):
        return forks.Prague
    case c.IsCancun(london, time):
        return forks.Cancun
    case c.IsShanghai(london, time):
        return forks.Shanghai
    default:
        return forks.Paris
    }
}

当前genesis配置如下

{
  "config": {
    "chainId": ....,
    "homesteadBlock": 0,
    "eip150Block": 0,
    "eip155Block": 0,
    "eip158Block": 0,
    "byzantiumBlock": 0,
    "constantinopleBlock": 0,
    "petersburgBlock": 0,
    "istanbulBlock": 0,
    "berlinBlock": 0,
    "londonBlock": 0,
    "mergeNetsplitBlock": 0,
    "terminalTotalDifficulty": 0,
    "terminalTotalDifficultyPassed": true,
    "shanghaiTime": 0,
    "cancunTime": 0,
    "pragueTime": 1716532255
  },
  ....
  "coinbase": "0x0000000000000000000000000000000000000000",
  "difficulty": "0x01",
  "extraData": "",
  "gasLimit": "0x17d7840",
  "nonce": "0x1234",
  "mixhash": "0x0000000000000000000000000000000000000000000000000000000000000000",
  "parentHash": "0x0000000000000000000000000000000000000000000000000000000000000000",
  "timestamp": "1715760655"

由于设置了pragueTime，所以LatestFork会返回Prague fork,不会是Cancun，所以ForkchoiceUpdatedV3会报错，至于Prague为什么不支持ForkchoiceUpdatedV3，留个TODO

目前要做的是把最新的fork改为Cancun

1. 将genesis.json中的pragueTime删掉
2. 停止geth服务
3. 重新初始化

   ./geth --config ./config/config.toml init ./config/genesis.json

4. 重启geth服务

Asynq 是一个 Go 库，用于对任务进行排队并与工作线程异步处理它们。它由Redis支持，旨在可扩展且易于入门。

Asynq 工作原理的高级概述：

• 客户端将任务放入队列
• 服务器从队列中取出任务并为每个任务启动一个工作协程
• 任务由多个worker同时处理

任务队列用作跨多台机器分配工作的机制。一个系统可以由多个工作服务器和代理组成，从而实现高可用性和水平扩展。

https://github.com/hibiken/asynq/tree/master

ZK-COUNTERS TABLE

Dynamic zk-counters

In the following doc, we calculate the cost of processing the opcode. It's important to also add the cost of calculating the cost

EXP

Inputs:
1- a: integer base.
2- exponent: integer exponent.

dynamic_gas = 50 * exponent_byte_size
We need to calculate the exponent byte size to get the gas cost. The counters cost is dynamic but we can't calculate the cost without consuming counters in a dynamic way. We need to find a way to get the size of the exponent in a constant manner or handle the counters limitations from the zkasm.
Maximum setted: Maxmimun byte syze = 256 bytes. Max counters = 256 * (2A + 4B) + 1B = 512A + 1025B

SHA3

L = input length
L/32 = A
L % 32 > 0 ? true -> B = 1, false -> B = 0

cnt_arith = 2 + B6
cnt_binary = 2 + A + B9
cnt_keccak = 1

CALLDATALOAD

L = byte offset in the calldata.
L/32 = A
L % 32 > 0 ? true -> B = 1, false -> B = 0

counters = divARITH + B*(SHLarith + SHRarith)

CALLDATACOPY

L = Length to copy.
L/32 = A
L % 32 > 0 ? true -> B = 1, false -> B = 0

counters = A(divARITH + SHLarith + SHRarith + MSTORE32) + SHLarith2 + SHRarith + MSTOREX

CODESIZE

counters = SLOAD

CODECOPY

L = bytes to copy.
if is createContract -> counters = CALLDATACOPY
else -> counters = LT + L*(LT + MEM_ALIGN_WR8)

EXTCODESIZE

counters = SLOAD

EXTCODECOPY

L = bytes to copy.
if is createContract -> counters = CALLDATACOPY
else -> counters = LT + L*(LT + MEM_ALIGN_WR8)

RETURNDATACOPY

L = Length to copy.
L/32 = A
L % 32 > 0 ? true -> B = 1, false -> B = 0
counters = 2EQ + LT + divARITH + mulARITH + A(MLOAD32 + MSTORE32) + B*(MLOADX + MSTOREX)

EXTCODEHASH

counters = SLOAD

SELFBALANCE

counters = SLOAD

MLOAD

counters = MLOAD32

MSTORE

counters = MSTORE32

SLOAD

counters = SLOAD

SSTORE

Cant calculate

JUMPI

isCreateContract ? true -> A = 1, false -> A = 0
isCreate ? true -> B = 1, false -> B = 0

counters = EQ + A(B(MLOADX + SHRarith) + (1-B)(EQ)) + (1-A)(EQ)

JUMP

isCreateContract ? true -> A = 1, false -> A = 0
isCreate ? true -> B = 1, false -> B = 0

counters = EQ + A(B(MLOADX + SHRarith) + (1-B)(EQ)) + (1-A)(EQ)

LOG

L = byte size to copy.
L/32 = A
L % 32 > 0 ? true -> B = 1, false -> B = 0
counters = AMLOAD32 + BMLOADX

CREATE

counters = computeGasSendCall + copySP + SLOAD + SSTORE + getLenBytes

CALL

argsLengthCall + retLength == 0 ? true -> A = 1, false -> A = 0
argsOffsetCall > memLength ? true -> B = 1, false -> B = 0
counters = addARITH + EQ + (1-A)(LT +BsaveMem ) + LT + isEmptyAccount + computeGasSendCall + copySP

CALLCODE

counters = 2EQ + LT2 + computeGasSendCall + copySP

DELEGATECALL

counters = 2EQ + LT2 + computeGasSendCall + copySP

CREATE2

counters = computeGasSendCall + copySP + SLOAD + SSTORE + getLenBytes

STATICCALL

counters = 2EQ + LT2 + computeGasSendCall + copySP

REGS TABLE

Dynamic regs

SSTORE

SLOAD

Should check how SLOAD is implemented

Functions TABLE

Dynamic functions

copySP

It depends on the stack size.
L = stack length
L/32 = A
L % 32 > 0 ? true -> B = 1, false -> B = 0
counters = MLOAD32 * (A + B)

MLOAD32

MSTORE32

MSTOREX

MLOADX

L = bytes length
L > 0 ? true -> A = 1, false -> A = 0
isMSTOREX ? true -> B = 1, false -> B = 0
counters = LT + B(2SHRarith + 2SHLarith) + (1-B)(C(2SHLarith + 4SHRarith) + (1-C)(2SHRarith + 2SHLarith) + MEM_ALIGN_WR)
MAX:
counters = 192A + 193B + 2MA

SHRarith

SHLarith

A -> bytes to shift
D -> times to shift (A << D)
E -> D > 256? true = 1, false = 0
counters= ARITH + EQ + (1-E) (D(LT + ARITH)) = 1A + 1B + (1-E)(D(1A + 1B)
MAX:
counters = 32A + 32B

isEmptyAccount

isNotPrecompiled ? true -> A = 1, false -> A = 0
zeroBalance ? true -> B = 1, false -> B = 0
zeroNonce ? true -> C = 1, false -> C = 0

counters = LT + A(SLOAD + LT + B(SLOAD + LT + C*(SLOAD + LT)))

https://github.com/0xPolygonHermez/zkevm-rom/blob/main/docs/opcode-cost-zk-counters.md

开源地址：https://github.com/Scratch-net/ethproxy

概述

Ethproxy 是一项为Cloudflare gateway支持的 API 方法 eth_getBlockByNumber 提供 LRU 缓存的服务。

• 它使用CCache作为缓存引擎。
• Singleflight可防止同时请求单个块
• 使用envconfig进行配置
• 最新 20 个块的默认 TTL 为 5 秒。从 20 到 1000 的区块的 TTL=“距最新的距离”* 5s
• 所有距离最新区块超过 1000 的区块都被认为是不可变的
• 请求过期的缓存项不会阻止服务。它在后台刷新请求的块
• 实现优雅关闭
• 短绒支持
• Docker 镜像构建。由于多阶段静态构建，生成的图像大小小于 6 mb