#IstioCon Performance tuning and best practices in a Knative based, large-scale serverless platform with Istio 张龚, Gong Zhang, IBM China Development Lab 庄宇, Yu Zhuang, IBM China Development Lab #IstioCon Cloud. #IstioCon ● Knative and Istio ● How Istio is leveraged in a Knative based platform ● Performance bottleneck analysis and tuning ○ Istio scalability optimization during Knative Service provisioning mesh enabled (based on https://github.com/knative/serving) #IstioCon Performance bottleneck analysis and tuning • Performance Criteria: the platform has multiple shard k8s clusters, each cluster should

DBeaver. Database objects Create, modify, and manage your database objects. Run queries Start executing your SQL queries and scripts. Create tables Define and create new tables within your database operations Object creation Working with data in DBeaver UI Additional Resources Executing SQL queries This guide outlines the essential steps to quickly get started with DBeaver. To begin working with For more on data management, view our tutorials on . YouTube Additional Resources Executing SQL queries DBeaver Lite User Guide 24.2.ea. Page 39 of 1010. 1. 2. Open SQL Editor: Navigate to the

DBeaver. Database objects Create, modify, and manage your database objects. Run queries Start executing your SQL queries and scripts. Create tables Define and create new tables within your database operations Object creation Working with data in DBeaver UI Additional Resources Executing SQL queries This guide outlines the essential steps to quickly get started with DBeaver. To begin working with For more on data management, view our tutorials on . YouTube Additional Resources Executing SQL queries DBeaver Ultimate User Guide 24.2.ea. Page 41 of 1171. 1. 2. Open SQL Editor: Navigate to

DBeaver. Database objects Create, modify, and manage your database objects. Run queries Start executing your SQL queries and scripts. Create tables Define and create new tables within your database operations Object creation Working with data in DBeaver UI Additional Resources Executing SQL queries This guide outlines the essential steps to quickly get started with DBeaver. To begin working with For more on data management, view our tutorials on . YouTube Additional Resources Executing SQL queries DBeaver User Guide 24.2.ea. Page 41 of 1171. 1. 2. Open SQL Editor: Navigate to the database

Secondary Indexes 53 Building and Using Secondary Indexes 53 Planning Your Data Model 54 Start with Queries 54 Denormalize to Optimize 54 Planning for Concurrent Writes 54 Using Natural or Surrogate Row Consistency Repair Features 60 Cassandra Client APIs 60 About Cassandra CLI 60 About CQL 61 Other High-Level Clients 61 Java: Hector Client API 61 Python: Pycassa Client API 61 PHP: Phpcassa Client 71 saved_caches_directory 71 seed_provider 71 seeds 71 storage_port 71 endpoint_snitch 71 Performance Tuning Properties 72 column_index_size_in_kb 72 commitlog_sync 72 commitlog_sync_period_in_ms

#IstioCon V0.2 Mesh Expansion (cont.) ● Traffic flow (VM -> Container) 1. Dnsmasq accepts DNS queries 2. Access the built-in Kube DNS (exposed by ILB) 3. Obtain the Cluster IP resolved 4. Traffic DNS Proxying 1. DNS query httpbin.ns1.svc.cluster.local 2. Cached DNS response – 10.4.4.4 DNS queries to the system configured name servers. Envoy does not use the agent’s DNS cache. http req to 10 ○ Virtual Machine Installation to get started. ○ Virtual Machine Architecture to learn about the high level architecture of Istio’s virtual machine integration. ○ Debugging Virtual Machines to learn

djangocms_text_ckeditor to your INSTALLED_APPS. Run migrations: 'filer', 'easy_thumbnails', THUMBNAIL_HIGH_RESOLUTION = True THUMBNAIL_PROCESSORS = ( 'easy_thumbnails.processors.colorspace', 'easy_thumbnails unlikely to provide a very good django CMS editing experience. Older devices will often lack the performance to support a usefully responsive frontend editing/administration interface. The following devices managing django CMS in the browser’s private (also known as incognito) mode can have significant performance implications. This is because local storage is not available in this mode, and user state must

Create a comfortable, relaxed environment throughout. • Be prompt with your responses to student queries. If you are not sure about anything, inform them and get back with your response the next day. • involves a large number of programmers, users receive software that is often better in quality and performance than proprietary alternatives. Users are encouraged to customise the software to their own personal special effects, select None. If you want a desktop with a balance of attractiveness and average performance, select Normal. If you want various desktop effects, such as wobbly windows, desktop cube and many

which may run on multiple clouds and/or on-premises — but are treated as a cohesive whole with a high degree of automation. Integration, metadata and governance capabilities glue the individual components Can it Scale To 100’s PB, 1000’s of nodes and billions of objects Scale API Compatibility Performance / 51 6 Confidential—Restricted … AND NATIVE INTEGRATION WITH BIG DATA WORKLOADS Support access (Prashant Pogde, Siyao Meng) ○ Key differentiator ○ Use cases in a hybrid world ○ Demo ● Ozone Performance (Ritesh Shukla) ○ Benchmarks and certifications ○ Optimized for the new DC outlook A BRIEF HISTORY

Control-plane scale testing ● Data-plane performance of Envoy is well documented ● Control-plane scale testing ○ Primary Goal ■ Understand Istio control-plane performance to support eBay scale ■ Proxy config Scale Testing: Results ● Default wide-open egress sidecar configuration does not scale ○ Results in high memory usage & convergence times since each sidecar knows about all services in the cluster ○ Disabled