报告题目：HAO智能：HI + AI + OI
报告摘要：大数据面向异构自治的多源海量数据, 旨在挖掘数据间复杂且演化的关联。 Big Data Knowledge Engineering (BigKE) Starting from the HACE theorem of big data, from the perspective of big knowledge modelin
Category: Performance
Whether you are a system designer, developer or tester, to build a high-performance system, you need to understand the following concepts: 1. Response time is the time for the system to respond to user requests, and response time is the user’s most intuitive experience of system performance. Therefore, the performance of the system is directly expressed. 2. Concurrent users, within a certain time frame, the largest number of simultaneous online users, that is, the number of peak online users 3. System throughput refers to the number of requests processed by the system within a unit time 4. Think Time, From a business perspective, this time refers to the time interval between each request when the user performs an operation. In order to simulate this time interval during performance testing, the concept of thinking time is introduced to more realistically simulate the user’s operate. In the formula of throughput, F=VU * R / T shows that throughput F is a function of the number of VUs, the number of requests issued by each user R, and time T, and R can be calculated by time T and user thinking time TS Calculation: R = T / TS
Design mode – Enjoyment mode
1. What is Flyweight Pattern
Flyweight Pattern is mainly used to reduce the number of objects created to reduce Memory usage and improved performance. This type of design pattern is a struct
Performance – Maven builds 3 times in OSX
I recently had a new Macbook Pro working and noticed that it takes about 15 minutes to build our code base in Maven2, while others in my team use slightly older The Macbook (but similar/same specif
Packing and unpacking
Mainly related to performance loss
Boxing is to turn the value type in the stack into an instance of object and put it in the heap. Then store the address of the instance in the stack.
Performance – Normal Operation Time using Graphite Grafana Measurement Services
My question is a bit philosophical: How do you calculate the uptime of a process based on its Graphite metrics?
I have many instances of jvm-process (Apache Spark). Everyone reports metrics t
Performance – What is the dominance of texture memory in Windows Phone 8 application analysis?
I run application analysis in the store suite of my Windows Phone 8 application, I found that the application is not responding and marked in red, when I select the time range and perform detailed
NameNode Performance Optimization (1) RPC Queue Split
1. Service RPC port NameNode uses port 8020 by default to listen to all RPC requests (HDP version), including client data requests, DataNode heartbeat and block reporting, ZKFC module monitoring an
Performance – How many nginx redirects too much?
I am working on a news center website that has existed for many years, and is steadily increasing page redirects. Currently we have about 375 redirects, an increase of about 5-10 per month. < p>
WCF and NetNameDPiPipeBinding are poor performance
I am using a WCF service with netNamedPipeBinding to transfer large amounts of data (a long list of objects) to the client (on the same machine of course).
The problem is the whole The call takes
Sybase – Index Property Precautions
I have a table in SYBASE, which has about 1 billion rows. There is currently no index created for this table, I want to create one now. My question is >Before creating an index, what precauti