A Seat at the Table – IT Leadership in the Age of Agility – Part 3 By Mark Schwartz “Courage, I say, is the value most needed by Agile IT leaders.” – Mark Schwartz Last Time in Part 2 Enterprise in no sense a “final” operating capability. Quality It is difficult for IT to gain a seat at the table when IT is always failing, but on the other hand, an IT leader who is reacting to statistical noise—failures and ties.The CIO’s Place at the Table IT leadership runs the business along with the others who run the business. The seat at the table is earned by being at the table. The role of senior IT leadership

A Seat at the Table – IT Leadership in the Age of Agility By Mark Schwartz “Mark Schwartz is a rare combination: a deep thinker who has also applied lean, Agile, and DevOps principles at the highest adapt, feedback-and-vision-oriented approach because of its complexity. A Nimble Approach to The Table Agile in One Paragraph: Agile thinking simply says that we should empower small teams to inspect adopting an intelligent attitude toward risk. Quality: It is difficult for IT to gain a seat at the table when IT is always failing, but on the other hand, an IT leader who is reacting to statistical noise—failures

Debugging the BPF Virtual Machine Lorenzo Fontana October 28, 2020 ● Debugging is useful to understand how things work ● Sometimes, eBPF programs can’t even load ● I couldn’t find good resources on this this, so, here I am ● I break lots of eBPF programs ● The BPF Virtual machine is not easy to understand Why ? The BPF subsystem lives in the kernel AND The kernel can be debugged using gdb The

Rud Merriam | A Journey into Non-Virtual Polymorphism 2 Who Doesn’t Recognize This?? 1990 Borland Turbo C++Cppcon 2023 | Rud Merriam | A Journey into Non-Virtual Polymorphism 3 Background ● Experience – Medium.com (https://medium.com/@rudmerriam)Cppcon 2023 | Rud Merriam | A Journey into Non-Virtual Polymorphism 4 Polymorphism ● Greek: “many forms” (Obligatory statement) ● The use of a single variableCppcon 2023 | Rud Merriam | A Journey into Non-Virtual Polymorphism 5 Polymorphic Variables ● Base class pointer to derived class – Virtual functions are not bad! ● Standard Template Library

A Seat at the Table – IT Leadership in the Age of Agility – Part 2 By Mark Schwartz “To the talented and hard-working government employees, so resilient in the face of impediments, criticism, and abuse sort of Star Chamber—a dimly lit group of serious, hooded faces (“decision makers”) seated around a table, passing judgment on each “formal proposal” presented to them. That last piece of Hunter and Westerman’s adopting an intelligent attitude toward risk. Quality: It is difficult for IT to gain a seat at the table when IT is always failing, but on the other hand, an IT leader who is reacting to statistical noise—failures

carePhoto by Tech Nick on unsplashSimple benchmark class Base { public: int concrete() const; virtual int virt() const; }; void benchmark(Base *b, size_t num_iterations) { auto start = Clock::now(); virt_duration = end-start;There are interesting technical details and surprising conclusions that virtual functions can be actually faster. Since CPU architectures are mentioned, I'd expect to see deep nt-vs-inheritance-vs-other- ways-performanceDoes it even matter?Conclusions ● The notion that “virtual functions are slower” is flat out wrong. ○ Which is not to say they are faster ○ Some of the suggested

name, const NodeConfig& config) : SyncActionNode(name, config) {} // You must override this virtual function NodeStatus tick() override { std::cout << "Type: [ApproachEnemy]. Instance:" <<

#IstioCon Is Your Virtual Machine Really Ready-to-go with Istio? Kailun Qin, Intel Haoyuan Ge #IstioCon Quick Summary (from Google Cloud Next ’19 [1]) VM works on Istio! [1] Istio Service Mesh Hybrid and Multi Clouds #IstioCon Istio VM Integration is? A Tumultuous Odyssey… [1] Istio 1.8: A Virtual Machine Integration Odyssey, Jimmy Song #IstioCon V0.2 Mesh Expansion ● Prerequisites ○ IP connectivity the workloads themselves #IstioCon V1.6-1.8 Better VM Workload Abstraction Item Kubernetes Virtual Machine Basic schedule unit Pod WorkloadEntry Component Deployment WorkloadGroup Service registry

#IstioCon Building resilient systems inside the mesh: abstraction and automation of Virtual Service generation Vladimir Georgiev, Thought Machine #IstioCon Sync calls failures inside the mesh implement this to be language agnostic? #IstioCon Virtual Services API ● Solves our problems, but… ● All Service Owners must be aware of the Virtual Services API in order to define their SLOs. ● Potential errors when dealing with YAMLs. ● Potential drift between the state of the service API and the Virtual Service config. ● Hard to manage when having hundreds of services. #IstioCon Abstracting to proto

Transactions of the block, only txid stored on kv, the detail information 33 // stored in another table 34 // 交易内容 35 repeated Transaction transactions = 11; 36 // The transaction count of the 转换后的c代码最终会编译成一个动态链接库来给XVM运行时来使用，在每个 生成的动态链接库里面都有如下初始化函数。 这个初始化函数会自动对wasm 里面的各个模块进行初始化，包括全局变量、内存、table、外部符号解析等。 1 typedef struct { 2 void* user_ctx; 3 wasm_rt_gas_t gas; 4 u32 g0; 5 t)); 11 (h->user_ctx) = user_ctx; 12 init_globals(h); 13 init_memory(h); 14 init_table(h); 15 return h; 16 } 3.4. 语言运行环境 3.4.1. c++运行环境 c++因为没有runtime，因此运行环境相对比较简单，只需要设置基础的堆栈分 布