<?xml version="1.0" encoding="utf-8" ?><rss version="2.0"><channel><title><![CDATA[像素格子的博客]]></title><description><![CDATA[]]></description><link>https://blog.youkuaiyun.com/q375923078</link><language>zh-cn</language><generator>https://blog.youkuaiyun.com/</generator><copyright><![CDATA[Copyright &copy; q375923078]]></copyright><item><title><![CDATA[稳定的Claude Code渠道，白嫖100刀]]></title><link>https://blog.youkuaiyun.com/q375923078/article/details/149308593</link><guid>https://blog.youkuaiyun.com/q375923078/article/details/149308593</guid><author>q375923078</author><pubDate>Sun, 13 Jul 2025 12:51:01 +0800</pubDate><description><![CDATA[🔥免费用Any Router API！跟着教程轻松领100美元余额，直接抵扣API费用！ ✅已验证有效，操作超简单： 1️⃣ 复制完整专属链接注册（参数缺一不可） 2️⃣ GitHub账号一键登录 3️⃣ 自动到账100美元 💡提示：必须严格按步骤操作，确保链接完整才能成功领取。新手友好，立即白嫖AI工具！ [专属链接]👉https://anyrouter.top/register?aff=YJE4]]></description><category></category></item><item><title><![CDATA[文件系统管理]]></title><link>https://blog.youkuaiyun.com/q375923078/article/details/107437046</link><guid>https://blog.youkuaiyun.com/q375923078/article/details/107437046</guid><author>q375923078</author><pubDate>Sat, 18 Jul 2020 23:10:22 +0800</pubDate><description><![CDATA[文件系统管理

]]></description><category></category></item><item><title><![CDATA[操作系统]]></title><link>https://blog.youkuaiyun.com/q375923078/article/details/107384549</link><guid>https://blog.youkuaiyun.com/q375923078/article/details/107384549</guid><author>q375923078</author><pubDate>Thu, 16 Jul 2020 15:45:38 +0800</pubDate><description><![CDATA[资源分配图化简
资源分配图化简

]]></description><category></category></item><item><title><![CDATA[MYSQL general tablespace]]></title><link>https://blog.youkuaiyun.com/q375923078/article/details/106490729</link><guid>https://blog.youkuaiyun.com/q375923078/article/details/106490729</guid><author>q375923078</author><pubDate>Tue, 02 Jun 2020 10:23:33 +0800</pubDate><description><![CDATA[https://blog.youkuaiyun.com/rudygao/article/details/50454277

]]></description><category></category></item><item><title><![CDATA[Wiredtiger 存储引擎介绍]]></title><link>https://blog.youkuaiyun.com/q375923078/article/details/106489902</link><guid>https://blog.youkuaiyun.com/q375923078/article/details/106489902</guid><author>q375923078</author><pubDate>Tue, 02 Jun 2020 10:00:06 +0800</pubDate><description><![CDATA[https://blog.youkuaiyun.com/baijiwei/article/details/80506121

]]></description><category></category></item><item><title><![CDATA[innodb_flush_method及O_DIRECT参数详解与测试]]></title><link>https://blog.youkuaiyun.com/q375923078/article/details/106414943</link><guid>https://blog.youkuaiyun.com/q375923078/article/details/106414943</guid><author>q375923078</author><pubDate>Thu, 28 May 2020 22:28:20 +0800</pubDate><description><![CDATA[https://blog.youkuaiyun.com/smooth00/article/details/72725941

]]></description><category></category></item><item><title><![CDATA[Linux I/O 磁盘调度策略]]></title><link>https://blog.youkuaiyun.com/q375923078/article/details/106404160</link><guid>https://blog.youkuaiyun.com/q375923078/article/details/106404160</guid><author>q375923078</author><pubDate>Thu, 28 May 2020 14:29:52 +0800</pubDate><description><![CDATA[https://blog.youkuaiyun.com/theorytree/article/details/6259104

]]></description><category></category></item><item><title><![CDATA[MySQLExplain_2]]></title><link>https://blog.youkuaiyun.com/q375923078/article/details/106380919</link><guid>https://blog.youkuaiyun.com/q375923078/article/details/106380919</guid><author>q375923078</author><pubDate>Wed, 27 May 2020 14:27:19 +0800</pubDate><description><![CDATA[@(MySQL学习)
文章目录一. 哪张原数据表中记录了Cardinality信息二. MySQL5.6安装sys库三. Explain（二）1. Explain输出介绍（1）. id（2）. select_type（3）. table（4）. type（5）. extra
一. 哪张原数据表中记录了Cardinality信息
--
-- 在information_schema.STATISTICS中记录了相关的信息
--
mysql&gt; use information_schema;
Database]]></description><category></category></item><item><title><![CDATA[MYSQL临时表]]></title><link>https://blog.youkuaiyun.com/q375923078/article/details/106361006</link><guid>https://blog.youkuaiyun.com/q375923078/article/details/106361006</guid><author>q375923078</author><pubDate>Tue, 26 May 2020 17:32:48 +0800</pubDate><description><![CDATA[https://www.cnblogs.com/cchust/p/10891520.html

]]></description><category></category></item><item><title><![CDATA[MYSQL执行计划explain介绍]]></title><link>https://blog.youkuaiyun.com/q375923078/article/details/106354945</link><guid>https://blog.youkuaiyun.com/q375923078/article/details/106354945</guid><author>q375923078</author><pubDate>Tue, 26 May 2020 14:04:21 +0800</pubDate><description><![CDATA[https://www.cnblogs.com/xinysu/p/7860609.html

]]></description><category></category></item><item><title><![CDATA[MYSQL的索引优化技术ICP、MRR、BKA]]></title><link>https://blog.youkuaiyun.com/q375923078/article/details/106344561</link><guid>https://blog.youkuaiyun.com/q375923078/article/details/106344561</guid><author>q375923078</author><pubDate>Mon, 25 May 2020 23:02:02 +0800</pubDate><description><![CDATA[MYSQL的索引优化技术ICP、MRR、BKA:
https://blog.youkuaiyun.com/caomiao2006/article/details/52205177

]]></description><category></category></item><item><title><![CDATA[参考极客时间专栏《Linux性能优化实战》学习笔记]]></title><link>https://blog.youkuaiyun.com/q375923078/article/details/106018184</link><guid>https://blog.youkuaiyun.com/q375923078/article/details/106018184</guid><author>q375923078</author><pubDate>Thu, 14 May 2020 16:38:17 +0800</pubDate><description><![CDATA[https://www.cnblogs.com/luoahong/p/11792459.html

]]></description><category></category></item><item><title><![CDATA[Linux进程管理]]></title><link>https://blog.youkuaiyun.com/q375923078/article/details/106119521</link><guid>https://blog.youkuaiyun.com/q375923078/article/details/106119521</guid><author>q375923078</author><pubDate>Thu, 14 May 2020 14:37:04 +0800</pubDate><description><![CDATA[1. Linux进程管理

文章目录1. Linux进程管理1.1. 进程的概念1.2. 进程描述符及任务结构1.2.1. 进程的描述表分配和存放1.2.2. 进程上下文1.2.3. 进程的状态1.2.4. 进程的家族树1.3. 进程的创建1.3.1. 写时拷贝（copy-on-write）1.3.2. fork1.3.3. vfork1.4. 线程在Linux中的实现1.4.1. 创建线程1.4.2. 内核线程1.5. 进程的终结1.5.1. 删除进程描述符1.5.2. 孤儿进程
1.1. 进程的概念
进]]></description><category></category></item><item><title><![CDATA[12. MYSQL_索引B+树Explain]]></title><link>https://blog.youkuaiyun.com/q375923078/article/details/106072197</link><guid>https://blog.youkuaiyun.com/q375923078/article/details/106072197</guid><author>q375923078</author><pubDate>Tue, 12 May 2020 11:15:46 +0800</pubDate><description><![CDATA[MYSQL_索引B+树Explain

文章目录一. 索引1. 索引的定义2. 二分查找二. 二叉树(Binary Tree)1. 二叉树的定义2. 平衡二叉树（AVL-树）三. B树/B+树1. B树的定义2. B+树的定义3. B+树的作用3. B+树的操作3. B+树的扇出(fan out)4. B+树存储数据举例四. MySQL索引1. MySQL 创建索引2. MySQL 查看索引3. Cardinality（基数）4. 复合索引五. information_schema（一）六. EXPLAI.]]></description><category></category></item><item><title><![CDATA[CPU上下文切换到底是个什么东西]]></title><link>https://blog.youkuaiyun.com/q375923078/article/details/105950475</link><guid>https://blog.youkuaiyun.com/q375923078/article/details/105950475</guid><author>q375923078</author><pubDate>Wed, 06 May 2020 14:38:37 +0800</pubDate><description><![CDATA[1. CPU上下文切换到底是个什么东西
文章目录1. CPU上下文切换到底是个什么东西1.1. CPU上下文1.2. CPU上下文切换1.2.1. 进程上下文切换1.2.2. 线程上下文切换1.2.3. 中断上下文切换
第一节，我们了解到了平均负载是个什么东西，并且通过三个案例展示了不同场景下(cpu密集型场景,io密集型场景,大量进程场景)的平均负载升高的分析方法其中,多个进程竞争cpu的问题经...]]></description><category></category></item><item><title><![CDATA[1.正确理解平均负载]]></title><link>https://blog.youkuaiyun.com/q375923078/article/details/105867080</link><guid>https://blog.youkuaiyun.com/q375923078/article/details/105867080</guid><author>q375923078</author><pubDate>Thu, 30 Apr 2020 18:09:30 +0800</pubDate><description><![CDATA[1. 正确理解平均负载
1.1. 平均负载的正确理解
$ uptime
02:34:03 up 2 days, 20:14,  1 user,  load average: 0.63, 0.83, 0.88

谈到平均负载,大家肯定会跟系统负载联想在一起,比如上面的0.63,咋一看,不就是单位时间内(最近5分钟内)cpu的使用率吗？,其实并不是这样的.
平均负载,简单来讲,其实指的是单位时间内,系...]]></description><category></category></item><item><title><![CDATA[git 简明使用手册]]></title><link>https://blog.youkuaiyun.com/q375923078/article/details/105858583</link><guid>https://blog.youkuaiyun.com/q375923078/article/details/105858583</guid><author>q375923078</author><pubDate>Thu, 30 Apr 2020 11:55:38 +0800</pubDate><description><![CDATA[1. git 简明使用手册
1.1. 简介
Linux 内核开源项目有着为数众多的参与者。 绝大多数的 Linux 内核维护工作都花在了提交补丁和保存归档的繁琐事务上（1991－2002年间）。 到 2002 年，整个项目组开始启用一个专有的分布式版本控制系统 BitKeeper 来管理和维护代码。
到了 2005 年，开发 BitKeeper 的商业公司同 Linux 内核开源社区的合作关系结束...]]></description><category></category></item><item><title><![CDATA[计算机的运算方法（一）]]></title><link>https://blog.youkuaiyun.com/q375923078/article/details/105831876</link><guid>https://blog.youkuaiyun.com/q375923078/article/details/105831876</guid><author>q375923078</author><pubDate>Wed, 29 Apr 2020 09:12:13 +0800</pubDate><description><![CDATA[一、有符号数
1.原码表示法
2.补码表示法
...]]></description><category></category></item><item><title><![CDATA[存储器概述]]></title><link>https://blog.youkuaiyun.com/q375923078/article/details/105820400</link><guid>https://blog.youkuaiyun.com/q375923078/article/details/105820400</guid><author>q375923078</author><pubDate>Tue, 28 Apr 2020 18:09:50 +0800</pubDate><description><![CDATA[1. 存储器概述
文章目录1. 存储器概述1.1. 存储器分类1.1.1. 按存储介质分类1.1.2. 按存取方式分类1.1.3. 按在计算机中的作用分类1.2. 存储器的层次结构1.3. 主存储器1.3.1. 概述1.3.2. 主存中存储单元地址的分配1.3.3. 主存的技术指标1.3.4. 半导体存储芯片简介1.3.5. 随机存取存储器1.3.6. 动态RAM的刷新1.3.7. 动态RAM和静...]]></description><category></category></item><item><title><![CDATA[1.操作系统_线程]]></title><link>https://blog.youkuaiyun.com/q375923078/article/details/105787149</link><guid>https://blog.youkuaiyun.com/q375923078/article/details/105787149</guid><author>q375923078</author><pubDate>Mon, 27 Apr 2020 11:40:03 +0800</pubDate><description><![CDATA[1. 线程
1.1. 引入多线程的动机
如果说操作系统中引人进程的目的是为了使多个程序并发执行,以便改善资源利用率和提高系统效率,那么，在进程之后再引人线程的概念,则是为了减少程序并发执行时所付出的时空开销,使得并发粒度更细、并发性更好。
解决问题的基本思路是:把进程的两项功能“独立分配资源"和“被调度分派执行”分离开来,
前一项任务仍然由进程完成,作为系统资源分配和保护的独立单位,无须频繁地切换...]]></description><category></category></item></channel></rss>