本文为摘录(或转载)，侵删，原文为： https://docs.hashdata.xyz/docs/20-product-guide/

1 Abort HashData

HashData was founded in 2016 by the guys who built Apache HAWQ, one of the most advanced SQL on Hadoop solutions. As the flagship product of the company, HashData Warehousing is a data warehouse service built for the cloud. While 100% compatible with the analytics interfaces of the open source MPP database Greenplum，HashData’s unique architecture delivers proven breakthroughs in performance, concurrency, elasticity and simplicity.

本文为摘录(或转载)，侵删，原文为： https://www.broadcom.com/support/knowledgebase/1211161453667/how-can-3ware-and-megaraid-performance-be-increased-in-linux

1 Question

How can LSI 3ware and LSI MegaRAID performance be increased in Linux?

2 Answer

2.1 For the Linux 2.6 kernel:

See KB article A004958 Article ID 1211161457978 See also: Article ID 1211161479669

本文为摘录(或转载)，侵删，原文为： https://www.cnblogs.com/hellokitty2/p/16368024.html

1 pin_lock 概述

1. spin lock 是一种不可休眠锁，可用于原子上下文。当获取不到锁的时候会 spin 等待，此时是 running 状态。

本文为摘录(或转载)，侵删，原文为： https://blog.regehr.org/archives/2173

自旋锁 (spinlock) 是多处理器操作系统提供的最基本的互斥原语。自旋锁需要保护当前 CPU 免受抢占（通常通过禁用中断，但我们会在本文中忽略这个方面），并且还需要防止其他核心同时访问临界区（通过使用原子内存操作）。正如其名称所示，尝试获取已锁定的自旋锁会简单地自旋：它们会消耗 CPU 时间：

本文为摘录(或转载)，侵删，原文为： https://people.redhat.com/~jolawren/klp-compiler-notes/livepatch/compiler-considerations.html

1 Interprocedural optimization

函数内联可能是影响动态修补最常见的编译器优化。在一个简单的例子中，内联将原始代码转换为：

本文为摘录(或转载)，侵删，原文为： https://github.com/postgres/postgres/blob/master/doc/src/sgml/nls.sgml#L52

1 Concepts

The pairs of original (English) messages and their (possibly) translated equivalents are kept in message catalogs , one for each program (although related programs can share a message catalog) and for each target language. There are two file formats for message catalogs: The first is the PO file (for Portable Object), which is a plain text file with special syntax that translators edit. The second is the MO file (for Machine Object), which is a binary file generated from the respective PO file and is used while the internationalized program is run. Translators do not deal with MO files; in fact hardly anyone does.