#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

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 90 Read/Write Latency Metrics 90 ColumnFamily Statistics 90 Monitoring and Adjusting Cache Performance 91 Tuning Cassandra 91 Tuning the Cache 92 How Caching Works 92 Configuring the Column Family 93 Hardware and OS Considerations for Cache Tuning 93 Estimating Cache Sizes 93 Tuning Write Performance (Memtables) 93 Tuning Java Heap Size 93 Tuning Java Garbage Collection 94 Tuning Compaction

64 of 1010. Metadata SQL Editor Options Opening separate metadata connection may increase performance because there will be no UI locks during query execution. You can set up opening separate connection any advanced properties. But in some cases you can use this as driver tuning, e.g. for better performance or for structure fixing. Advanced settings DBeaver Lite User Guide 24.2.ea. Page 175 of 1010 your regular work. Enable it only for debugging. The trace generation decreases application performance and may produce huge log files. JDBC tracing DBeaver Lite User Guide 24.2.ea. Page 214 of 1010

66 of 1171. Metadata SQL Editor Options Opening separate metadata connection may increase performance because there will be no UI locks during query execution. You can set up opening separate connection any advanced properties. But in some cases you can use this as driver tuning, e.g. for better performance or for structure fixing. Advanced settings DBeaver Ultimate User Guide 24.2.ea. Page 202 of 1171 your regular work. Enable it only for debugging. The trace generation decreases application performance and may produce huge log files. JDBC tracing DBeaver Ultimate User Guide 24.2.ea. Page 241 of

66 of 1171. Metadata SQL Editor Options Opening separate metadata connection may increase performance because there will be no UI locks during query execution. You can set up opening separate connection any advanced properties. But in some cases you can use this as driver tuning, e.g. for better performance or for structure fixing. Advanced settings DBeaver User Guide 24.2.ea. Page 202 of 1171. Parameter your regular work. Enable it only for debugging. The trace generation decreases application performance and may produce huge log files. JDBC tracing DBeaver User Guide 24.2.ea. Page 241 of 1171. Apache

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 CHOOSING BUCKET TYPE • Impala has native support for HDFS • Some Impala operations will have poor performance without fast directory renames and deletes: – DROP TABLE/PARTITION – INSERT OVERWRITE – LOAD

Gateway ■ Multiple networks ● all goes though the Gateway ● via L3 networking (if enhanced performance is desired) #IstioCon Demo #IstioCon Istio VM integration seems closer to be production ready isolation for multi-vendor services ○ End-to-end security! (not just between middle boxes) ● High performance networking ○ Much higher multi-Gbps peak data speeds ○ Ultra low latency ○ And of course, reduce 2 ● Dedicated Egress Gateway ○ Compatibility reasons ○ Performance & Security #IstioCon Legacy VNF  CNF: Option 3 ● Further performance concerns #IstioCon End-to-end Key Protection ● SDS (Secret

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 class Level(Modifier): """ marks all node levels Performance issues in menu modifiers Navigation modifiers can quickly become a performance bottleneck. Each modifier is called multiple times: For

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

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 Playing PlanetPenguin Racer You can win the cups only by practising and focusing on improving your performance. 180 Chapter 5. Ubuntu and Games Ubuntu Desktop Course Copyright © 2009 Canonical Limited 5