https://www.jianshu.com/p/b9245242472b https://stackoverflow.com/questions/42637631/what-does-virtual-core-in-yarn-vcore-mean https://docs.hortonworks.com/HDPDocuments/HDP2/HDP-2.6.5/bk_yarn-resource-management/content/enabling_cgroups.html https://d…

Resource Management in View Controllers 视图控制器的资源管理 View controllers are an essential part of managing your app’s resources. View controllers allow you to break your app up into multiple parts and instantiate only the parts that are needed. But more t…

转自:http://www.wowotech.net/linux_kenrel/device_resource_management.html . 前言 蜗蜗建议,每一个Linux驱动工程师,都能瞄一眼本文. 之所以用“瞄”,因此它很简单,几乎不需要花费心思就能理解.之所有这建议,是因为它非常实用,可以解答一些困惑,可以使我们的代码变得简单.简洁.先看一个例子: : /* drivers/media/platform/soc_camera/mx1_camera.c, line 695 */ :…

Resource Management in View Controllers View controllers are an essential part of managing your app’s resources. View controllers allow you to break your app up into multiple parts and instantiate only the parts that are needed. But more than that, a…

资料 网址 资源管理(Resource Management)服务 包含一系列支持企业IT治理的资源管理产品集合,主要包括资源组和资源目录.通过资源管理服务,您可以按照业务需要搭建合适的资源组织关系,使用目录.资源夹.账号以及资源组,分层次地组织和管理您的云资源.https://help.aliyun.com/product/94362.html?spm=a2c4g.11186623.6.540.22b61ee89G6IAx 资源目录(Resource Directory) 是阿里云面向企业客户…

安装HUE之后,需要配置很多东西才能将这个系统的功能发挥出来,因为Yarn是配置的HA模式,所以在配置HUE的时候,会有些不用,下面一段文字是官网拿来的 # Configuration for YARN (MR2) # ------------------------------------------------------------------------ [[yarn_clusters]] [[[default]]] # Whether to submit jobs to this cl…

UIViewController生命周期 UIViewControl是IOS程序中的一个重要组成部分,扮演者一个大管家的身份,管理着程序中的众多视图,今天看看了官方文档并做了如下一些简单的记录: 何时加载view,加载的原则是什么,视图何时消失等问题,文档中讲的都很详细. Controller的view最好在需要显示时再去加载,并且在系统发出内存警告时释放比必要的view及相关的数据对象. 一.UIViewController的初始化 初始化时会根据需要调用init,initWithCoder等…

Apache Kafka is optimized for small messages. According to benchmarks, the best performance occurs with 1 KB messages. Larger messages (for example, 10 MB to 100 MB) can decrease throughput and significantly impact operations. This topic describes op…

<Item 15> Provide access to raw resources in resource-managing classes 1.You need a way to convert an object of the RAII class (in this case, tr1::shared_ptr) into the raw resource it contains (e.g., the underlying Investment*). There are two genera…

1.除了内存资源以外,Other common resources include file descriptors, mutex locks, fonts and brushes in graphical user interfaces (GUIs), database connections, and network sockets. Regardless of the resource, it's important that it be released when you're fini…