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杂七杂八的,随手记录。

SQLite: Past, Present, and Future

Table of Contents

本文为摘录(或转载),侵删,原文为: attachments/pdf/2/p3535-gaffney.pdf

1 INTRODUCTION

  • SQLite is embedded in the process of the host application

  • Instead of communicating with a database server across process boundaries, applications manage a SQLite database by calling SQLite library functions

  • several characteristics combine to make SQLite useful in a broad range of scenario:

Velox: Meta’s Unified Execution Engine

本文为摘录(或转载),侵删,原文为: attachments/pdf/8/p3372-pedreira.pdf

1 ABSTRACT

Velox:

  • C++ database acceleration library

  • 用来:

    • 构建执行引擎
      • 应对复杂数据类型
    • 增强数据管理系统 (enhance data management system)
  • 倚赖:

Velox: Meta’s Unified Execution Engine

本文为摘录(或转载),侵删,原文为: attachments/pdf/8/p3372-pedreira.pdf

1 ABSTRACT

Velox:

  • C++ database acceleration library

  • 用来:

    • 构建执行引擎
      • 应对复杂数据类型
    • 增强数据管理系统 (enhance data management system)
  • 倚赖:

Your Read is Our Priority in Flash Storage

Design Trade-offs for a Robust Dynamic Hybrid Hash Join

本文为摘录(或转载),侵删,原文为: attachments/pdf/f/p2257-jahangiri.pdf

1 ABSTRACT

  • 探索分片数量对 HHJ 性能的影响
  • propose a new lower bound for number of partitions
  • design and evaluate different partition insertion techniques to maximize memory utilization with the lest CPU cost

2 INTRODUCTION

  • HHJ: Hybrid Hash Join

OceanBase 707M tpmC

Ulimit conflict with PAM and Systemd

本文为摘录(或转载),侵删,原文为: https://mydbops.wordpress.com/2017/12/10/ulimit-conflict-with-pam-and-systemd%E2%80%8B%E2%80%8B%E2%80%8B/#content

1 ulimit 是做什么的

User limits command, limit the use of system-wide resources.

2 ulimit 从哪里读取配置文件

  • 从下面的文件、目录中读取配置文件

Stream Control Transmission Protocol (SCTP)

本文为摘录(或转载),侵删,原文为: -attachments/pdf/9/masterraghu.com-92-Interface-Models.pdf -https://www.linuxjournal.com/article/9749

1 SCTP Associations

SCTP 的联合 (association) 类似于 TCP 的连接 (connection) , 但又有不同:

调优"四剑客"的实战演练,福尔摩斯•K带你轻松优化性能

Table of Contents

本文为摘录(或转载),侵删,原文为: https://mp.weixin.qq.com/s?__biz=MjM5NjgwMDMxMg==&mid=2652164045&idx=1&sn=305c8d05c0b8b41827a9d4062c44a4a8&chksm=bd03dd9a8a74548c907bc3f1ffac82db0207e14bdd6c2398fa798187b9ea449371a9f0ec1f6f&mpshare=1&scene=1&srcid=1205yZcXcCHhOMmAZpuiFyFo&sharer_sharetime=1688349494576&sharer_shareid=a1eb8d286d4dcd42a0c884a984d12f54#rd

1 几个重要的库

  • KWR
    KES 自动负载信息库(Automatic Workload Repertories),每小时自动采集性能指标生成快照,建立数据库时间模型、IO 模型、等待事件、TOP SQL 和操作系统统计等性能指标,为数据库性能调优提供指导。