At the reader's request, phoronix.com recently conducted a special performance test on the Linux kernel, comparing the performance of 32-bit, 32-bit physical address extension (PAE), and 64-bit. Linus Torvalds, the father of Linux systems, once said that there is a 25% performance difference between the system kernel that enables and disables config_highmem4g (which enables 32-bit systems to support 4 GB physical memory. Here we will verify it.
This
Preface:
The last time I upgraded GCC 4.7.2 on CentOS 6 (), many things have not been studied due to my limited capabilities and time constraints, as a result, there are some redundant and incorrect or uncommonly used parts in the tutorial. (I was also told by my sister that I misled her, so I am wronged.) I apologize to everyone.
This time I updated gcc on Ubuntu 12.04 LTS 64-bit edition and found some ori
Compiling Linux 3.13.11 kernel source code in Ubuntu 14.04 64-bit System
In Ubuntu 14.04, the source code process for compiling Linux 3.13.11 kernel in 64-bit systems is divided into four steps:
1. Download the kernel: I downloaded the kernel version 3.13.11!
2. Unzip the kernel: I decompress it/home/jello/Downloads/li
process.(1) Language Options(2) Select the network (if the cable is connected, there is no such a step)(3) Pre-install option (update Ubuntu and third-party plugins after installation)Pop-up prompt to unmount the mount point of the USB drive (select Yes to edit the partition)(4) Installation type (select Custom partition)Format the Ext4 file system and establish a "/" root partition and swap partition, and install the boot loader on the "/" root part
1.sudo -I.2.Gedit/etc/apt/sources.listAdd the following at the end:#要添加的内容开始deb http://old-releases.ubuntu.com/ubuntu/raring main Universe restricted multiverseDEB-SRC http://old-releases.ubuntu.com/ubuntu/raring main Universe restricted multiverseDeb http://old-releases.ubuntu.com/ubuntu/raring-security main Universe restricted multiverseDEB-SRC http://old-relea
Skype recently released a small update for the Linux system, including fixing PulseAudio 3.x and 4.x audio noise problems on Ubuntu to address the lack of libasound2-plugins: i386 and others cause crashes on Ubuntu/Debian 64-bit systems.
If you are using Skype on Ubuntu, you may want to upgrade to get these fixes. Thi
Part 1 preparations for Hadoop 2.2.0 Construction)
Hadoop: download the latest version Hadoop2.2.0 from the Apache official website. Currently, the linux32-bit system executable file is provided officially. to deploy the file on a 64-bit system, you need to download the src Source Code and compile it by yourself.
: Http://apache.claz.org/hadoop/common/hadoop-2.2.0/
OS of three hosts: Ubuntu 12.04-
I just installed 64-bit Ubuntu today and cannot use adb. The error is nosuchfileordictionary. It is clear that the adb file exists. Later, I used ldd to view the execution lib of adb and found that the lib running of adb is not supported! Later I thought maybe adb is 32-bit, need 64-bit ubuntu to install 32-bit program
The number of CPU instruction sets have kept growing, and likewise for the operating systems which is able to run and supp ORT on more than one CPU system architecture. For example, a Linux OS such as Ubuntu, Fedora, Redhat, Linux Mint, Debian, Arch Linux, OpenSUSE and CentOS can run on Int El or AMD CPU in either 32-bit or 64-bit flavor. In addition, some Linux also supports ARM CPUs in both 32-bit and
them. It may not be recommended to install the rpm package here. It is easier to install Ubuntu with a compressed package.
3. After the rpm package is successfully installed, set LD_LIBRARY_PATH and set the. bashrc file in ubuntu 10.04 instead of bash_profile.
4. When the program is compiled, an unexpected error is reported: libaio. so cannot be found. What is the use of this library? This package explains
The effect of AodbeReader in Linux is better than that of FoxitReader, especially for Chinese documents. This article introduces the installation of AdobeReader in Ubuntu, the article "Ubuntu12.0464-bit installation FoxitReader" (see the http://www.linuxidc.com/Linux/2014-01/95803.htm) introduces the installation of FoxitReader. AodbeRe
Aodbe Reader works better in Linux than Foxit Reader, especially for Chinese documents. This article introduces the
Ubuntu Trusty brings in 3.13.0 Linux kernel, which requires the preparation of certain conditions for all Ubuntu libraries, the Docker installation package is called Docker.io. (Note: Ubuntu (and Debian) contains some older kde3/gnome2 installation packages called Docker, so the Docker installation package here is called Docker.io. )Installation:Install the insta
To re-compile Hadoop2.2.0 in 64-bit Ubuntu
Only 32-bit hadoop-2.2.0.tar.gz is deployed in the hadoopofficial website. If you want to deploy the Hadoop-2.2.0 under 64-bit Ubuntu, you need to re-compile the source package to generate a 64-bit deployment package.
We recommend
Notes on setting up an ADT development environment for 64-bit Ubuntu 14.04
Let's take a look at how Ubuntu has developed recently. By the way, we have set up ADT to facilitate future research on the Android framework. In Windows, the ADT can be directly decompressed and decompressed. I thought it would not be too difficult in Linux.
Test environment:
In the past, the reason why we couldn't leave windows was that thunder was a huge factor. Although thunder was called a "vampire", it was really necessary in the current network environment. Today, Linux fans have helped you install thunder in Ubuntu Linux. I have tried both 32-bit and 64-bit commands. Here we provide two versions of thunder 0.4 and 0.6.0.4. The experiment is successful in 32-Bit mode, but
It's been about two months since Google released the official version of Android Studio 1.0. Having been accustomed to using the Eclipse+adt model, and having tried the Android Studio preview in Windows, I felt that the card was not working, and it was temporarily shelved. Today, it's a whim to know if using Android Studio under Linux will be smoother than Windows. Here are the basic building processes, as well as some of the problems encountered:first, the installation of files1.
, NVIDIA Quadro NVS 140M graphics card, default system and software configuration, including Linux 2.6.31 Kernel, GNOME 2.28.1 desktop environment, X Server 1.6.4, NVIDIA 195.22 graphics card driver, GCC 4.4.1 compiler, and EXT4 file system.
CONFIG_HIGHMEM4G is enabled for the 32-bit Ubuntu kernel by default, but the PAE mode is disabled. In this way, when the system configures 4 GB memory, 1 GB is reserved for the kernel virtual space. The actual ava
to hold source code. CD ~mkdir SRC Download and install install x264.Download A recent stable snapshot of x264 from ftp://ftp.videolan.org/pub/videolan/x264/snapshots/. The exact version does not seem to matter. To write the This guide, I used version x264-snapshot-20120528-2245-stable.tar.bz2, but I had used previous versions too. CD ~/SRCwget ftp://ftp.videolan.org/pub/videolan/x264/snapshots/x264-snapshot-20120528-2245-stable.tar.bz2Tar xvf x264-snapshot-20120528-2245-stable.tar.bz2CD x264
Install PPStream on 64-bit Ubuntu
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64-bit Ubuntu 10.10 is successfully installed.
Install the two software required (ppstream_1.0.0-3lucid2_amd64.deb, getlibs-all.deb) I have uploaded
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Follow.
Install the 32-bit Ubuntu package directly on the official website.
The
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