[转帖]How long does it take to make a context switch?

https://blog.tsunanet.net/2010/11/how-long-does-it-take-to-make-context.html That's a interesting question I'm willing to spend some of my time on. So

[转帖]How fast are Unix domain sockets?

https://blog.myhro.info/2017/01/how-fast-are-unix-domain-sockets Jan 3, 2017 • Tiago Ilieve Warning: this is my first post written in English, after o

[转帖]acme How to issue a cert

https://github.com/acmesh-official/acme.sh/wiki/How-to-issue-a-cert 1. Single domain: 1) Webroot mode: If you already have a web server running, you s

【转帖】What are segfault rip/rsp numbers and how to use them

https://stackoverflow.com/questions/1456899/what-are-segfault-rip-rsp-numbers-and-how-to-use-them 11 When my linux application crashes, it produces a

[react性能优化]--防止react-re-render: Why Suspense and how ?

近期内部项目基础项目依赖升级,之前使用的路由缓存不再适用,需要一个适配方案。而在此过程中react re-render算是困扰了笔者很久。后来通过多方资料查找使用了freeze解决了此问题。本文主要论述react re-render问题一般的解决方案和freeze在react内部的实现原理。reac

如何在forEach内使用异步调用 async/await

翻自: How to use async and await in a forEach JS loop? https://learn.coderslang.com/0144-how-to-use-async-and-await-in-a-foreach-js-loop/ 事实上我们无法在 forEa

[转帖][译] 如何基于 Cilium 和 eBPF 打造可感知微服务的 Linux(InfoQ, 2019)

http://arthurchiao.art/blog/how-to-make-linux-microservice-aware-with-cilium-zh/ 译者序 本文内容来自 2019 年的一个技术分享 How to Make Linux Microservice-Aware with Ci

[转帖][译] strace 是如何工作的(2016)

http://arthurchiao.art/blog/how-does-strace-work-zh/ 译者序 本文翻译自 2016 年的一篇英文博客 How Does strace Work 。如果能看懂英文,我建议你阅读原文,或者和本文对照看。 阅读本文之前,强烈建议先阅读这篇之前的文章: (

[转帖][译] ltrace 是如何工作的(2016)

http://arthurchiao.art/blog/how-does-ltrace-work-zh/ 译者序 本文翻译自 2016 年的一篇英文博客 How Does ltrace Work 。如果能看懂英文,我建议你阅读原文,或者和本文对照看。 阅读本文之前,强烈建议先阅读下面几篇之前的文章:

如何计算DG环境下Redo传输所需的带宽?

MOS有篇文章: How To Calculate The Required Network Bandwidth Transfer Of Redo In Data Guard Environments (Doc ID 736755.1) 还提供了一个参考公式: The formula used (a

Booking.com如何在毫秒内搜索数百万个地点

译自:How Booking.com Searches Through Millions of Locations in Milliseconds Booking.com是一家与酒店、旅馆、度假租赁等相关的在线旅行社。每个月都有数亿用户通过访问该网站来寻找合适的度假住宿。Booking的一个主要特性

[转帖]让 CPU 告诉你硬盘和网络到底有多慢

https://cizixs.com/2017/01/03/how-slow-is-disk-and-network/ 简介 经常听到有人说磁盘很慢、网络很卡,这都是站在人类的感知维度去表述的,比如拷贝一个文件到硬盘需要几分钟到几十分钟,够我去吃个饭啦;而从网络下载一部电影,有时候需要几个小时,我都

[转帖]Netflix 如何在 7 分钟内完成故障转移

https://www.oschina.net/translate/how-netflix-does-failovers-7-minutes-flat?print 在冬季2012年,Netflix公司遭受了 长时间断电 持续了七个小时,由于在美东地区的AWS弹性负载均衡服务的问题。(Netflix的

[转帖]Linux禁用CPU省电状态/Linux系统性能调优

https://www.jianshu.com/p/945168b47487 How to Disable CPU Power Saving States on a Redhat or Suse Linux System For RedHat Linux (release 7 and later)

[转帖]wmic命令介绍

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Grafana 系列文章(十一):Loki 中的标签如何使日志查询更快更方便

👉️URL: https://grafana.com/blog/2020/04/21/how-labels-in-loki-can-make-log-queries-faster-and-easier/ 📝Description: 关于标签在 Loki 中如何真正发挥作用,你需要知道的一切。它可

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本篇参考: https://admin.salesforce.com/blog/2022/how-i-solved-it-bypass-validation-rules-in-flows 背景:作为系统的全局考虑,我们在设计validation rule / flow / trigger时,往往会使

[转帖]dim_STAT : Collect MySQL & System stats @Linux locally

http://dimitrik.free.fr/blog/posts/collect-stats-howto.html 改天学习尝试一下. Generally you have much bigger benefit with dim_STAT when you're collecting and

[转帖]bcc Tutorial

https://github.com/iovisor/bcc/blob/master/docs/tutorial.md This tutorial covers how to use bcc tools to quickly solve performance, troubleshooting, a