Your Read is Our Priority in Flash Storage
Table of Contents
本文为摘录(或转载)，侵删，原文为： attachments/pdf/e/p1911-lee.pdf
1 ABSTRACT
问题： 读阻塞
Design Trade-offs for a Robust Dynamic Hybrid Hash Join
Table of Contents
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
Table of Contents
- 1 Introduction
- 2 DESIGN OVERVIEW
- 2.1 Goals
- 2.2 Criteria of Design
- 3 架构图
- 3.1 Application Layer
- 3.2 Proxy Layer
- 3.3 Data Service Layer
- 3.4 Zones
- 3.5 表
- 3.6 Node
- 3.7 SQL Engine
- 3.8 Multi-tenancy
- 3.9 Resource Isolation.
- 3.10 Features
- 4 STORAGE ENGINE
- 5 TRANSACTION PROCESSING ENGINE
- 6 TPC-C BENCHMARK TEST
- 7 LESSONS IN BUILDING OCEANBASE
本文为摘录(或转载)，侵删，原文为： attachments/pdf/d/p3385-xu.pdf
Ulimit conflict with PAM and Systemd
Table of Contents
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)
Table of Contents
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
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- 1 几个重要的库
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。
A Study of Database Performance Sensitivity to Experiment Settings
All Major C++17 Features You Should Know
Table of Contents
本文为摘录(或转载)，侵删，原文为： https://www.cppstories.com/2017/01/cpp17features/
1 Language Features
1.1 New auto rules for direct-list-initialization
1.2 static_assert with no message
static_assert() 可以不用再写 message 了， 类似 C assert
Cardinality Estimation in DBMS: A Comprehensive Benchmark Evaluation
Table of Contents
本文为摘录(或转载)，侵删，原文为： attachments/pdf/2/p752-zhu.pdf
1 ABSTRACT
we compare the effectiveness of CardEst methods in a real DBMS
We establish a new benchmark for CardEst, which:
- contains a new complex realworld dataset STATS and
- a diverse query workload STATS-CEB.
We integrate multiple most representative CardEst methods into PostgreSQL,
cgroup memo
Table of Contents
1 Threads (Tasks (threads) versus processes)
cgroup v1 可以单独操作进程中的线程, man cgroups :
In cgroups v1, a distinction is drawn between processes and tasks. In this view, a process can con‐ sist of multiple tasks (more commonly called threads, from a user-space perspective, and called such in the remainder of this man page). In cgroups v1, it is possible to independently manipulate the cgroup memberships of the threads in a process.