remove frequently-used program icons on the Launcher. Why are there shopping links in the Dash? — Online results make the Dash more useful and help fund Ubuntu development. Lenses Lenses allow you to Browse messages from your online social media accounts. Music lens — Find and play music from your computer or the internet. Photos lens — View photos from your computer or your online social media accounts on your computer, the Dash also shows you related online results for your searches. Online sources include Amazon.com and dozens of other online sources. When you purchase music or products from

suits hybrid deployments of online and offline cloud services. Its innovative CPU scheduling algorithm ensures real-time CPU preemption and jitter suppression for online services. Additionally, its its innovative memory reclamation algorithm against out of memory (OOM) allows online services to run reliably based on their higher service priorities. • EulerFS: A new file system is designed for non-volatile preferentially performed for process groups with low priorities to ensure the normal running of online services. Optimized mremap performance: Entries at the page middle directory (PMD) and page

................................ 313 8.8.2. Backing up DVDs .................. 317 8.9. Playing Online Media ........................ 324 8.9.1. Watching Videos in a Web Browser ..................... ................................ 350 9.2. System Documentation ...................... 351 9.3. Online Documentation ....................... 352 9.4. Community Support .......................... 355 DVDs Playing Online Media Editing Videos Lesson Summary Review Exercise Lab Exercise Ubuntu: Help and Support 60 Introduction Free support resources System documentation Online Documentation

过小，会导致离线任务频繁唤醒，干扰在线任务。 功能描述 CPU* HT1 HT2 online task offline task 严重干扰 CPU* HT1 HT2 online task offline task 严重干扰 CPU* HT1 HT2 online task idle CPU* HT1 HT2 online task 原SMT驱离方案 加入优先级反转处理 后的SMT驱离方案 优先级负载均衡。 范围 : 0 和 1 默认值 : 0 功能描述 online online online offline offline CPU runqueue 判断任务优先级 high priority queue low priority queue offline online online online online offline offline offline offline offline 1 2 CPU 0 CPU 1 online online online online online online offline offline offline offline offline offline offline CPU QoS 优先级队列 CPU QoS 优先级迁移 16 openEuler 22.03 LTS SP2 技术白皮书 内核创新 潮汐 affinity

an urgent matter that needs to be addressed. One solution is to deploy online and offline jobs together, utilizing idle online cluster resources to meet the computing requirements of offline jobs. This services is optimized to ensure efficient and stable operation, and the ratio of resources for online and offline services is dynamically adjusted to reduce QoS violations of mission-critical services Injection-based feature analysis QoS model training Pre-analysis apiserver Interference-aware scheduler Online service Offline service Host kernel Rubik Performance tuning Isolation and preemption Resource

The automatic switchover and switchback eliminate downtime, keeping enterprise-grade applications online around the clock. • Data integrity protection in extreme conditions The shared data resources scenario 1: service continuity assurance Enterprises' mission-critical applications must be kept online around the clock and no downtime is acceptable. The HA cluster software supports two-node hot backup provides free and open sourced code. Feature Description • Java Flight Recorder (JFR): JFR is an online tool used for collecting diagnostic and profiling data that ensures minimal performance overheads

========== Zdev setup ==================================================================== ID ONLINE NAMES ^ │ generic-ccw │ 0.0.0009 > │ 0.0.000c > │ 0.0.000d > │ 0.0.000e > │ │ dasd-eckd │ ========== Zdev setup ==================================================================== ID ONLINE NAMES ^ │ generic-ccw │ 0.0.0009 > │ 0.0.000c > │ 0.0.000d > │ 0.0.000e > │ │ dasd-eckd │ ========== Zdev setup ==================================================================== ID ONLINE NAMES ^ │ generic-ccw │ 0.0.0009 > │ 0.0.000c > │ 0.0.000d > │ 0.0.000e > │ │ dasd-eckd │

Ubuntu please refer to the Ubuntu Installation Guide1. A HTML version of the manual is available online at the Ubuntu Documentation website2. 1 https://help.ubuntu.com/18.04/installation-guide/ 2 https://help in repositories which are collections of packages found on various media, such as CD-ROM discs, or online. Packages are normally in a pre- compiled binary format; thus installation is quick, and requires Most of the material covered in this chapter is available in man pages, many of which are available online. • The InstallingSoftware2 Ubuntu wiki page has more information. • For more dpkg details see the

表，相比虚拟化平台，提供了网络、安全组等开箱即用在线服务管理能力 和工具。一些私有云平台如青云，还提供 RDS、负载均衡服务。常见私有 云: OpenStack、青云、华为 HCS、HSC Online、EasyStack 等。 杭州飞致云信息科技有限公司 8 公有云平台 部署在云服务提供商数据中心，为市场公众企业客户提供服务被多个企业 客户共享使用的云平台。世界上第一个公有云是亚马逊 务的服务、管理、运维、运营。  支持主流虚拟化平台: VMware、Power、FusionCompute、FusionSphere  支持私有云平台: OpenStack、华为 HCS、华为 HCS Online、青云、阿里小飞天、 腾讯云 TCE  支持公有云平台: 阿里云、腾讯云、华为云、亚马逊 AWS、微软 Azure  支持容器云平台: k8s、OpenShift  支持超融合平台: 53 图 3-32 Nutanix Web 控制台页面 3.11 纳管华为 HCSOnline HCS Online 和 HCS 对接的不一样，HCS Online 的 OC 端不开放，HCS Online 只 接 SC 账号。Manageone 只管 HCS，HCS Online 里已经没有 Manageone 了，直接对 接 API 服务器。 操作步骤如下。 （1）在【管理中心】

5. Client通知用户请求完成。HEARTBEAT 心跳用于中心节点和数据节点的数据交互，详细功能如下： • 通过chunkserver的定期心跳，检测chunkserver的在线状态（online, unstable, offline） • 记录chunkserver定期上报的状态信息（磁盘容量，磁盘负载，copyset负载等），以提供运维工 具查看上述状态信息。 • 通过上述信息的定期更新，作为schedule copyset 信息上报给 MDS。 • Order ConfigChange: 将 MDS 下发的任务提交给对应的 对应 模块执行。HEARTBEAT Chunk server的状态更新： • Online: chunk server在线，正常服务。 • Unstable: chunk server一段时间没收到心跳（默认 30s），但是还没有到达offline的时间（默认 30min），c 打印一条error日志。调度模块感知到offline状态， 触发chunk server的recover修复。 心跳正常 心跳正常 超过miss时间 未超过offline时间 UNSTABLE ONLINE OFFLINESCHEDULE Schedule（系统调度）是为了实现系统的自动容错和负载均衡，这两个功能是分布式 存储系统的核心问题，也是 curve 是否能上生产环境的决定因素之一。