SEARCH KEYWORD -- kernel
In-memory key-value store in C, Go and Python
Subtitle: Wow Go’s net library is fast On paternity leave for my second child, I found myself writing an in-memory hashmap (a poor-man’s memcached), in Go, Python and C. I was wondering how hard it would be to replace memcached, if we wanted to do something unusual with our key-value store. I also wanted to compare the languages, and, well, I get bored easily! The code is on github as Key-Value-Polyglot. Each version implements enough of the get and set commands from the mem...
Microsoft is the 17th largest contributor to Linux
The Linux Foundation has released 2012 Linux White Paper which analyzes developers and contributors of the Linux kernel from 2.6.36 to 3.2.The top ten contributors are: Red Hat, Intel, Novell, IBM, Texas Instruments, Broadcom, Nokia, Samsung, Oracle, and Google. The software giant Microsoft's contribution ranked at 17, while the company's CEO Steve Ballmer has claimed previously that Linux is a cancer. Microsoft engineers have contributed 688 patches, which are mostly related to Hyper-V vir...
Linux,Microsoft,Contribution 2012-04-05 07:43:19
Chrome is dominating the browser world
Microsoft has announced recently that their Edge browser will abandon its own kernel and switch to use Google Chromium. This by no means indicates that Microsoft admitted it lost the war against Google on browser. For Microsoft, making such a decision is certainly not easy, but it is absolutely a wise decision. After all, the market share of both parties are not at the same competing level anymore. According to NetMarketShare's statistics, Chrome's market share in desktop world has reached 67.29...
Origin of Windows blue screen
Many of you from old ages might see the classical blue Windows blue screen before.Do you still remember the most famous Windows blue screen incident during a presentation of a Windows 98 beta by Bill Gates at COMDEX on April 20 1998. But do you know the history of blue screen? John Vert, an ex-Windoes NT kernel guy, shared the story on Quora. Back in 1991 John Vert wrote the original code for Windows NT 3.1 that put the video screen back into text mode and the routines to put text on it (a...
Windows blue screen,History 2013-07-24 09:25:16
How does computer boot up?
The whole boot process of computer can be summarized in 4 phases. 1. BIOS In the 70's read-only memory(ROM) was invented. The boot program is written into ROM, the first thing the computer does is to read and execute this program when it's powered on. The program in this chip is called "Basic Input/Output System" (BIOS). 1.1 Power-On Self-Test The BIOS will first check whether the computer hardware can fulfill the basic conditions for booting up, this process is called Power-On Self-Test...
Socket programming tips in Solaris
I sponsored a topic in stackoverflow.com, and hoped the programmers can share the socket programming tips in different UNIX flavors. But unfortunately, the responders are few. So I can only share my socket programming tips in Solaris at here (the Chinese version can be found there): 1. Use the following link options: "-lresolv -lnsl -lsocket";2. Solaris doesn't provide socket options: SO_SNDTIMEO and SO_RCVTIMEO(Why does Solaris OS define SO_SNDTIMEO and SO_RCVTIMEO socket options...
Additional steps need to implement to setup shadow-boxV2 OPTEE on Raspberry PI
We followed the Shadow-box v2 project from the https://github.com/kkamagui/shadow-box-for-arm to set up the trustZone on Raspberry PI modeB to protect the Linux Kernel. But got a problem when doing the step: [3.6.5. Activate Shadow-Box for ARM and Start Secure Pi!] to create the hash for the memory area. The result is not shown. If you met the same problem, this is what I did to fix the problem on my PI: 1.1 When we do the step [3.5.1. Copy OP-TEE OS with Shadow-Box for ARM and N...
HARDWARE,RASPBERRY PI 2019-05-20 08:52:55
Hello, Kernel!
When we learn module programming, the first small program must be hello, kernel!. For a novice, how do we avoid some mistakes and how to fix the bugs we have when writing the first module program? Is there any example we can refer to? Here is one example. 1. Write the hello.c 01 #include <linux/init.h> 02 #include <linux/module.h> 03 #include <linux/kernel.h> 04 //Compulsory 05 //Module lincese declaration 06 MODULE_LICENSE("GPL"); ...
Convert ext3 to ext4 file system on CentOS
ext3 is a journaled file system that is commonly used by the Linux kernel. It is the default file system for many popular Linux distributions, including Debian. Stephen Tweedie. On June 28, 2006, Theodore Ts'o, the principal developer of ext3, announced an enhanced version, called ext4. Today, we will show how to convert ext3 to ext4 format on CentOS. System environment: Release version : CentOS release 5.4(Final) Kernel: Linux localhost.lo...
CentOS, ext3 to ext4 2012-11-21 11:40:45
How to check which Ohai plugin hangs in chef client run
Ohai plugins are very important components in chef client which aims to provide resource management automation on a server. The data discovered by Ohai plugins are describing the current state of the server and they will be used to maintain the server in a desired state. Each Ohai plugin discovers a specific pierce of information about the server such as cpu, memory, middleware etc. However, there are rare occasions(well I am a bit optimistic here) someone may find that the chef client...
HOW TO,CHEF-CLIENT,OHAI,UPTIME,HANG 2017-12-24 22:09:59
RECENT
- Tips for Socializing With Friends During College
- Proximity Cards Do More Than Just Open Doors
- How to choose quality painted auto parts
- Oval engagement rings from MoonOcean: Elegance of form and individual approach
- Hologres vs AWS Redshift
- GoLand connect to Hologres
- A journey to investigate a goroutine leakage case
- Understanding Slice Behavior in Go
- Breaking Barriers: How 3D Printing is Democratizing Product Development
- The Power of Efficiency: 10 Practical Energy-Saving Tips for Tech Startups
- more>>