SEARCH KEYWORD -- Performance
Misunderstanding about Android UI design
A few days ago I wrote a post trying to correct a lot of the inaccurate statements I have seen repeatedly mentioned about how graphics on Android works. This resulted in a lot of nice discussion, but unfortunately has also lead some people to come up with new, novel, and often technically inaccurate complaints about how Android works.These new topics have been more about some fundamental design decisions in Android, and why they are wrong. I’d like to help people better understand ...
Android,UI,Priority,Background job,Smooth 2011-12-09 02:30:25
The most stupid C bug ever
I have been programming for a number of years already. I have seen others introduce bugs, and I have also introduced (and solved!) many bugs while coding. Off-by-one, buffer-overflow, treating pointers as pointees, different behaviors or the same function (this is specially true for cross-platform applications), race conditions, deadlocks, threading issues. I think I have seen quite a few of the typical issues. Yet recently I lost a lot of time to what I would call the most stupid C bug in ...
C,Bug,Comment,Back slash 2012-04-22 03:40:49
etcd installation and usage
etcd is an open source and highly available distributed key-value storage system and is commonly used in critical data storage and service discovery and registration use cases. It is focusing on: Simple: well-defined, user-facing API (gRPC) Secure: automatic TLS with optional client cert authentication Fast: benchmarked 10,000 writes/sec Reliable: properly distributed using Raft etcd and Redis both support key-value storage and can be set up in distributed systems. Also Redis supporst more key...
ETCD,TUTORIAL,RAFT,DISTRIBUTED SYSTEM 2021-03-07 03:10:33
The Death Of The Spec
Earlier today, my colleague Matt Burns wrote a post noting that most tablet makers may be largely failing because they’ve sold their soul to Android and are now just in the middle of a spec war, which no one can win. I’m gonna go one step further in that line of thinking: the spec is dead.There have been a few key stories from the past couple of weeks that highlight this new reality. Barnes & Noble unveiled the new Nook Tablet. Consumer Reports looked at the...
Specification,Android,Platform,Software design 2011-11-15 08:20:22
Optimization Tricks used by the Lockless Memory Allocator
With the releasing of the Lockless Memory Allocator under the GPL version 3.0 license, we can now discuss more of the optimization tricks used inside it. Many of these are things you wouldn't want to use in normal code. However, when speed is the ultimate goal, sometimes we need to break a few rules and use code that is a little sneaky.The SlabA slab is a well-known technique for allocating fixed size objects. For a given object size, a chunk of memory is divided up into smaller regions of that ...
Optimization,Memory allocation 2011-11-16 08:02:16
Code coverage rate
When doing unit testing, the code coverage rate is often used as the criteria for measuring testing performance, even in some cases code coverage may be used to consider whether the testing task is completed or not. So testers need to spend much time on designing test cases which can cover as many codes as possible. There are advantages and disadvantages about using code coverage rate. First let's check what is code coverage rate: code coverage rate= the degree of code coverage in testing. There...
Unit testing,Code coverage 2013-04-16 12:50:57
Dieter Rams' 10 principles of good web design
Dieter Rams is one of the most important designers of the 20th century but his famous 10 principles for good design focused on industrial design. Here Lisbon-based designer Nuno Loureiro applies them to web design “My heart belongs to the details. I actually always found them to be more important than the big picture. Nothing works without details. They are everything, the baseline of quality†– D...
Web design,Principle,Innovation 2012-02-08 10:29:32
Why Flash didn’t work out on mobile devices
The debate over whether supporting the Adobe Flash plug-in on mobile devices is a feature or not is over. Last night, ZDNet got hold of a leaked Adobe announcement: It’s abandoning its work on Flash for mobile. It’s not a huge surprise that it came to this, since Adobe had been struggling to optimize the performance, and the tide has been turning toward HTML5.From the Adobe announcement ZDNet published:Our future work with Flash on mobile devices will be focused on enabling Fl...
Flash,HTML5,Advantage,Merit,Mobile device,Support 2011-11-15 03:15:12
Oracle CEO Mark Hurd : IBM PureSystem is far behind Oracle
Oracle CEO Mark Hurd had an interview with Chinese media in San Francisco on 19th April. Mark Hurd first introduced different levels of Oracle's overall strategy: 1) the product must achieve best among similar products; 2) system open, vertical integration to provide customers with maximum performance; 3) Industry specific solutions; 4) give users the right to choose and the integration of the cloud environment (private cloud, public cloud, mixed cloud). In addition, Mark Hurd share his own...
Oracle,IBM,Pureystem,Hardware/Software 2012-04-19 07:17:24
The Ultimate GetElementsByClassName, Anno 2008
Two and a half years ago, I released the first version of getElementsByClassName. With how web browsers has evolved since, I thought I’d release a real ultimate version, dated 2008. Native Web Browser SupportSafari 3.1 has native getElmentsByClassName support, and upcoming Firefox 3 and Opera 9.5 will have it too. It only leaves out, you’ve guessed it, Internet Explorer.The Necessity Of This ScriptLiving in a world where Microsoft is halting every possible way t...
JavaScript,geElementsByClassName,Cross browser compatible,Implementation 2011-11-26 02:46:20
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