Linux uses kswapd for virtual memory management such that pages that have been recently accessed are kept in memory and less active pages are paged out to disk. (what is a page?)…Linux uses manages memory in units called pages. So,the kswapd process regularly decreases the ages of unreferenced pages…and at the end they are paged out(moved out) to disk
流动性挖矿
在流动性币对池添加资产后，系统将根据添加金额计算出该币对池的份额占比。举例来说，您持有BUSD/USDT币对池2个池份额。该币对池目前的池份额总数为10，币对池构成为10 BUSD + 11 USDT，价值21 USD，则您目前的份额比例为20%，份额构成为2 BUSD + 2.2 USDT，价值 4.2 USD。但需注意，每次任何用户的交易、添加、赎回都将影响池份额、池价格、池构成、池价值，因此您的份额比例、份额构成、份额价值都将实时发生变化
隔夜利息(Swap)是什么？
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隔夜利息(Swap)是什么？
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Python Design Patterns
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kswapd0进程
Linux uses kswapd for virtual memory management such that pages that have been recently accessed are kept in memory and less active pages are paged out to disk.
(what is a page?)…Linux uses manages memory in units called pages.
So,the kswapd process regularly decreases the ages of unreferenced pages…and at the end they are paged out(moved out) to disk
kswapd0进程的作用：它是虚拟内存管理中，负责换页的，操作系统每过一定时间就会唤醒kswapd ，看看内存是否紧张，如果不紧张，则睡眠，在 kswapd 中，有2 个阀值，pages_hige 和 pages_low，当空闲内存页的数量低于 pages_low 的时候，kswapd进程就会扫描内存并且每次释放出32 个free pages，直到 free page 的数量到达pages_high。
另一个进程 events/0 是工作者线程，主要是用来执行delay work的。先简单介绍一下。
宕机原因显而易见了，physical mem 不足，引起 swap 频繁。其实这也是 VPS 使用上的一个常见的问题了，通常是由 Apache 占用内存过多引起的。kswapd0 是系统的虚拟内存管理程序，如果物理内存不够用，系统就会唤醒 kswapd0 进程，由 kswapd0 分配磁盘交换空间作缓存，因而占用大量的 CPU 资源。重启Apache，释放内存，问题就会消失。但这不是长久之计，最好的方法还是花点钱升级下内存。我也知道随着访问量的不断上涨，肯定要升级下内存，但是没想到这个问题这么快就来了……
服务器每分钟负载上升的很厉害，在运行的进程队列中，看到 kswapd0 。kswapd0进程的作用：它是虚拟内存管理中, 负责换页的， 操作系统每过一定时间就会唤醒kswapd ，看看内存是否紧张，如果不紧张，则睡眠，在 kswapd 中，有2 个阀值, pages_hige和pages_low,当空闲内存页的数量低于 pages_low 的时候, kswapd进程就会扫描内存并且每次释放出32 个free 隔夜利息(Swap)是什么？ pages,直到 free page 的数量到达pages_high.