IPC性能极致优化方案-RPAL落地实践 谢正尧 字节跳动 研发工程师 目 录 方案诞生的背景 01 全进程地址空间共享与保护 02 用户态进程切换 03 高效的Go Event Poller 04 RPC框架Kitex集成 05 性能收益与业务展望 06 方案诞生的背景 第一部分 方案诞生的背景 几种常见的同机通信场景： 1. 微服务合并部署（亲和性部署、sidecar 低开销 降低计算成本 常见的本地通信方案：回环 IP、UDS、共享内存IPC 方案诞生的背景 以性能较优的 IPC 方案 share memory ipc 为例分析性能瓶颈： 注：方案 github 地址：https://github.com/cloudwego/shmipc-go 方案诞生的背景 方案诞生的背景 IPC 的性能瓶颈有哪些: 1. 系统特权级切换； 2. 异步线程唤醒/休眠（事件通知）； 异步线程唤醒/休眠（事件通知）； 3. 数据拷贝（序列化/反序列化）； 方案诞生的背景 能不能把库函数调用的高性能优势做到 IPC 里面，降低进程间的事件通知和数据拷贝开销？ 以go-go微服务 RPC 通信场景为例，该问题可以抽象为，如何高效地在两个 go runtime 间进行函数调用？ 方案诞生的背景 基于以上问题，我们最终引入了 RPAL（Run Process As Library） 方案，基于跨进程虚拟地址

Rules • IPC stands for Intra-Process Communication • Programs stand for software running in a constrained environment ▪ CCI stands for: oContract oConcept oImplementationProblem Definition: Channel

User guide to IPC/DEBIAN10-81A-64 | © 2020 Syslogic Datentechnik AG | All rights reserved Seite 1 von 24 User guide to IPC/DEBIAN10-81A-64 – a 64-bit Debian Linux by Syslogic Revision 0-11-rt-amd64 User guide to IPC/DEBIAN10-81A-64 | © 2020 Syslogic Datentechnik AG | All rights reserved Seite 2 von 24 Contents port 12 8 TCP/IP networking 12 8.1 Accessing files on WINDOWS from IPC/DEBIAN10-81A-64 12 8.2 Accessing files on IPC/DEBIAN10-81A-64 from Windows 13 8.3 Exchange files with SCP 13 8.4

The default unit is millimeters. PCB IPC-2581 export The pcb export ipc2581 command exports a board design in IPC-2581 format. Usage: kicad-cli pcb export ipc2581 [--help] [--output OUTPUT_FILE] [--drawing-sheet FIELD_NAME] INPUT_FILE INPUT_FILE Board file to export. Optional arguments: -h , --help Show help for the IPC-2581 export command. -o

, -- output

The output filename. When file. The default is 3. --compress Compress output file as a ZIP file. --version <IPC-2581 standard version> IPC-2581 standard version to use. Options are B or C (default). --units Units to use

SetHeapTraceOutput . . . . . . . . . . . . . . . . . . . . . . . . . . . . 900 58 Reference for unit ’ipc’ 901 58.1 Used units . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Reference for unit ’ipc’ 58.1 Used units Table 58.1: Used units by unit ’ipc’ Name Page BaseUnix 140 System 1331 unixtype 2087 58.2 Overview This document describes the IPC unit for Free Pascal 58.3.1 Constants IPC_CREAT = 1 shl 9 Create if key is nonexistent IPC_EXCL = 2 shl 9 fail if key exists IPC_INFO = 3 For ipcs call 901 CHAPTER 58. REFERENCE FOR UNIT ’IPC’ IPC_NOWAIT = 4 shl 9

panel 3D ビューア Net inspector Generating outputs Fabrication outputs and plotting Drill files IPC-2581 files Component placement files Additional fabrication outputs Printing Exporting files Footprints manufacturer’s recommendations. IPC-2581 files IPC-2581 files are XML files that contain complete fabrication and assembly data for a board design. If your manufacturer accepts IPC-2581 files, these can replace replace Gerber files, drill files, and component placement files. To create an IPC-2581 file, select IPC-2581 File (.xml)… from the Fabrication Outputs section of the File menu. Units: Choose the units

panel 3D Viewer Net inspector Generating outputs Fabrication outputs and plotting Drill files IPC-2581 files Component placement files Additional fabrication outputs Printing Exporting files Footprints manufacturer’s recommendations. IPC-2581 files IPC-2581 files are XML files that contain complete fabrication and assembly data for a board design. If your manufacturer accepts IPC-2581 files, these can replace replace Gerber files, drill files, and component placement files. To create an IPC-2581 file, select IPC-2581 File (.xml)… from the Fabrication Outputs section of the File menu. Units: Choose the units

. . . . . . . . . 测量工具 设计规则检查 Board Statistics 查找工具 搜索面板 3D 查看器 网络检查 生成输出 制造输出和绘图 钻孔文件 IPC-2581 files 元件拾放文件 其它制造输出 打印 导出文件 封装和封装库 管理封装库 创建和编辑封装 Browsing footprint libraries 高级主题 配置和自定义 钻孔文件中数字的格式。 请根据制造商的建议在此处选择一个选项。 IPC-2581 files IPC-2581 files are XML files that contain complete fabrication and assembly data for a board design. If your manufacturer accepts IPC-2581 files, these can replace replace Gerber files, drill files, and component placement files. To create an IPC-2581 file, select IPC-2581 File (.xml)… from the Fabrication Outputs section of the File menu. Units: Choose the units

34 OS Kernal mode User mode FS IPC Driver Multiplex shell ls app …… Different Hardware System call 另一种视角看待 Runtime API 35 OS Kernal mode User mode FS IPC Driver Multiplex shell ls app …… Runtime API 37 设计OS kernel: 宏内核(Monolithic Kernel) 还是 微内核(Micro Kernel)？ Kernal mode User mode FS IPC VM Multiplex shell ls app …… Different Hardware System call Monolithic Kernel 另一种视角看待 Runtime 还是 微内核(Micro Kernel)？ Kernal mode User mode FS IPC VM Multiplex shell ls app …… Different Hardware System call Kernal mode User mode FS IPC VM Multiplex shell app …… Different Hardware System

for host and DPU processes. It also supports special file systems such as proc, sys, and dev. • IPC collaboration enables unaware communication between hosts and DPU processes. It supports FIFO and Unix insensible collaboration framework – qtfs Common file system collaboration (open/read/write /ioctl/...) IPC collaboration Mount collaboration (mount/umount) epoll/poll collaboration FIFO collaboration Unix Udev Standard image Python RPM Perl OpenSSL Modbus EtherCAT OPC UA TSN HSR/PRP NETCONF/YANG CNC IPC Turnstile Edge Embedded Embedded 024 openEuler OS Technical White Paper Innovation Projects