Pepabo, Inc. 2019.07.25 GopherCon 2019 Optimization for number of goroutines using feedback control Principal engineer Yusuke MIYAKE @monochromegane Pepabo R&D Institute, GMO Pepabo, Inc. https://blog Issues to solve for the realization �27 1. Selection of performance metrics 2. Finding how to control rapidly and continuously Performance metrics Performance metrics �29 • Independent resource type number of goroutines based on the metrics • Continuously • Rapidly • Accurately • Feedback control meets these conditions. • Tracking a given set-point using errors from the set-point. • Applying

Stream Processing and Analytics Vasiliki (Vasia) Kalavri
 vkalavri@bu.edu Spring 2020 4/09: Flow control and load shedding ??? Vasiliki Kalavri | Boston University 2020 Keeping up with the producers what if the queue grows larger than available memory? • block the producer (back-pressure, flow control) 2 ??? Vasiliki Kalavri | Boston University 2020 Load management approaches 3 ! Load shedder runtime and selectively drops tuples according to a QoS specification. • Similar to congestion control or video streaming in a lower quality. 4 ??? Vasiliki Kalavri | Boston University 2020 https://commons

. . . . . . . . . . 目 目录 录 第 第 1 章 章 机器管理概述 机器管理概述 1.1. MACHINE API 概述 1.2. 管理计算机器 1.3. 管理 CONTROL PLANE 机器 1.4. 将自动扩展应用到 OPENSHIFT CONTAINER PLATFORM 集群 1.5. 在用户置备的基础架构上添加计算机器 1.6. 在集群中添加 RHEL 计算机器 管理 管理 CONTROL PLANE 机器 机器 13.1. 关于 CONTROL PLANE 机器集 13.2. CONTROL PLANE 机器集入门 13.3. CONTROL PLANE 机器集配置 13.4. 使用 CONTROL PLANE 机器集管理 CONTROL PLANE 机器 13.5. CONTROL PLANE 弹性和恢复 13.6. CONTROL PLANE PLANE 机器集故障排除 13.7. 禁用 CONTROL PLANE 机器集 第 第 14 章 章 部署机器健康 部署机器健康检查 检查 14.1. 关于机器健康检查 14.2. MACHINEHEALTHCHECK 资源示例 14.3. 创建机器健康检查资源 14.4. 关于裸机的基于电源的补救 161 171 171 171 172 174 175 176 176 177 178

3SCALE WEBASSEMBLY 模块 1.21. 使用 3SCALE ISTIO 适配器 1.22. 服务网格故障排除 1.23. ENVOY 代理故障排除 1.24. SERVICE MESH CONTROL PLANE 配置参考 1.25. KIALI 配置参考 1.26. JAEGER 配置参考 1.27. 卸载 SERVICE MESH 第 第 2 章 章 SERVICE MESH 1.X Envoy，默认使用 eth0 而不是 lo 将流量发送到应用程序容器。 1.2.2.4.6. Service Mesh Control Plane 1.1 对于所有平台，此发行版本结束了对基于 Service Mesh 1.1 的 Service Mesh Control Planes 的支持。 1.2.2.4.7. Istio 1.12 支持 第 第 1 章 章 SERVICE MESH Run 是一个技术预览功能。 gRPC Proxyless Service Mesh 是一个技术预览功能。 Telemetry API 是一个技术预览功能。 发现选择器功能不受支持。 外部 control plane 不受支持。 网关注入不受支持。 1.2.2.4.8. Kubernetes Gateway API Kubernetes Gateway API 是一个技术预览功能，默认为禁用。

Steps Using Celery in your Application Calling Tasks Canvas: Designing Work-flows Routing Remote Control Timezone Optimization What to do now? Resources Getting Help Bug tracker Wiki Contributing License “canvas”, including grouping, chaining, chunking, and more. Read more…. Time & Rate Limits You can control how many tasks can be executed per second/minute/hour, or how long a task can be allowed to run, used for user tasks leaking resources, like memory or file descriptors, that are simply out of your control. Read more…. User Components Each worker component can be customized, and additional components

Steps Using Celery in your Application Calling Tasks Canvas: Designing Work-flows Routing Remote Control Timezone Optimization What to do now? Resources Getting Help Bug tracker Wiki Contributing License “canvas”, including grouping, chaining, chunking, and more. Read more…. Time & Rate Limits You can control how many tasks can be executed per second/minute/hour, or how long a task can be allowed to run, used for user tasks leaking resources, like memory or file descriptors, that are simply out of your control. Read more…. User Components Each worker component can be customized, and additional components

Steps Using Celery in your Application Calling Tasks Canvas: Designing Work-flows Routing Remote Control Timezone Optimization What to do now? Resources Getting Help Bug tracker Wiki Contributing License “canvas”, including grouping, chaining, chunking, and more. Read more…. Time & Rate Limits You can control how many tasks can be executed per second/minute/hour, or how long a task can be allowed to run, used for user tasks leaking resources, like memory or file descriptors, that are simply out of your control. Read more…. User Components Each worker component can be customized, and additional components

Steps Using Celery in your Application Calling Tasks Canvas: Designing Work-flows Routing Remote Control Timezone Optimization What to do now? Resources Getting Help Bug tracker Wiki Contributing License “canvas”, including grouping, chaining, chunking, and more. Read more…. Time & Rate Limits You can control how many tasks can be executed per second/minute/hour, or how long a task can be allowed to run, used for user tasks leaking resources, like memory or file descriptors, that are simply out of your control. Read more…. User Components Each worker component can be customized, and additional components

including grouping, chaining, chunking, and more. Read more... . • Time & Rate Limits You can control how many tasks can be executed per second/minute/hour, or how long a task can be allowed to run, used for user tasks leaking resources, like memory or file descriptors, that are simply out of your control. Read more... . • User Components Each worker component can be customized, and additional components by the user. The worker is built up using “bootsteps” — a dependency graph enabling fine grained control of the worker’s internals. Framework Integration Celery is easy to integrate with web frameworks