5g

linux dynamic increase in LV space

LVM has been said to increase online space, has not tried the following small try: 1 to increase hard drive 2 Create PV 3. Add PV to VG 4 Extended LV 1 Why Why increase the hard disk after adding the need to restart (there is no known way to restart

Linux installation Chapter

<p> Here we introduce the Linux installation. The installation of various Linux distributions are different, but similar. Overall, the addition made to Linux, we are familiar with other Linux Online support network installation and hard disk in

Oracle installation on Linux

Idle at home without incident on the weekend decided to install Oracle play. This time is RedhatEnterprise 4 + Oracle11gR2, during the installation process has encountered some problems, especially sum down for later use. Before beginning the install

With LPVM use Wubi to install Ubuntu to modify the allocation of hard disk size when

Many people may have encountered this problem: see, said the use wubi to install ubuntu in a convenient and safe. The first time with ubuntu but his request has no concept of space allocation, they readily gave a 5,6 g I thought should be enough. The

There is one hundred million random numbers, do not sort how to find a median [transfer]

There is one hundred million random numbers, not how to find a median ranking Topic: 10G in a file with integers, order out of order, asked to find the median. Memory is limited to 2G. Ideas can only write (memory is limited to 2G, which means that you ca

[2010-07-24] UbuntuLinux install Windows XP on VirtualBox

First sudo apt-get install virtualbox The system will automatically install the virtualbox OSE edition is the open source edition New "virtual computer" Type the name of free choice windows XP Memory size of the actual situation to see you

ubuntu11.04 hard disk partition mount options

Ubuntu11.04 recently released the final version, nothing to play on the hard drive installed, the installation partition to mount. Check the check information, here Thank (original source) http://meapo.net/harddisk-partition-of-ubuntu11-04/ Memory fo

java jvm parameters-Xms-Xmx-Xmn-Xss tuning Summary

java jvm parameters-Xms-Xmx-Xmn-Xss tuning Summary Common Configuration Example <br /> heap size setting JVM maximum heap size in the three limitations: the data model related to the operating system (32-bt or 64-bit) limits; system of free virtual

LVM in CentOS 4.8 Application Environment

Install the system, create the boot partition 100M, and the remaining space to create a volume group VolGroup00, create logical volume in VolGroup00 LogVol00, LogVol01, swap and root partitions are mounted. The following actions to increase and expan

CentOS 4.8 environment, the application instance LVM

Install the system, create a 100M boot partition the remaining space to create the volume group VolGroup00, create a logical volume in VolGroup00 LogVol00, LogVol01, swap and root partitions are mounted. Following actions to increase and expand the n

Sub-query size du - max-depth = x

Just learned a trick from http://www.blogjava.net/kuuyee/archive/2011/04/25/348985.html, linux subdirectory under the file size check, taking up disk size, previously only known du-h, the original There argument - max-depth, learn. eg: [Simonsun @ su

Experts teach you how to configure the JVM parameters

Reprinted: http://developer.51cto.com/art/200907/135160.htm / Usr / local / jdk / bin / java-Dresin.home = / usr / local / resin-server-Xms1800M-Xmx1800M-Xmn300M-Xss512K-XX: PermSize = 300M-XX: MaxPermSize = 300M-XX: SurvivorRatio = 8 - XX: MaxTenuringThr

Oracle 11g R2 installation of Linux environment configuration

Environment OS CentOS 5.4 Oracle 11g R2 DB version 1) Check the memory size of the basic needs grep MemTotal / proc / meminfo Swap partition size grep SwapTotal / proc / meminfo Increase the swap partition to create / home / swap file such a partitio

Course Notes of the database system to achieve: to improve application performance

One: to improve application performance 1 disk (Disk) may not be more than memory (Memory) slow. Principle: Memory of random access (random access) needs to consume a lot of time, magnitude is about 500 + a cycle, that is, random access time, CPU to

postgresql memory optimization

PG configuration file is a database directory of the postgresql.conf file, version 8.0 can support future K, M, G such parameters, just modify the appropriate parameters to restart the PG service is OK. shared_buffers: This is the most important para

WindowsXP hard drive to install Ubuntu through the dual system comparative analysis of two methods

The first method is suitable for novice, this method is to install Ubuntu as a software WINDOWS partition, the advantage is fast, simple and not easy to partition and file damage, disadvantage is low performance, rely WINDOWS partition, not true dual

zT-do recently when a small problem on linux

Linux command to view disk space Article Category: PHP programming df-h Df command is a linux system to view the unit disk partition file system, you can add parameters to view disk space information, the command format: df-hl Display format: File sy

install a virtual machine under linux

Ready to install a kvm in Ubuntu virtual host (xp3); First, create a disk image qemu-img create -f qcow2 tmp.img 5G Parameters are: qemu-img create-f format (because it is windows, so the format is qcow2) File Name Size Second, install the image to d

MySQL error code 28 solution

MySQL error code 28 solution collection Today opened the virtual machine, create a trigger, you can succeed, but the show triggers when the report about the error: Got error 28 from storage engine The following is a detailed error code. mysql> sho

Fedora install Oracle and automation scripts with completely remove method (

Under the text interface installation oracle10gR2 fedora14 software one. See the installation environment 1 Memory and SWAP [Root @ xinchang ~] # grep MemTotal / proc / meminfo MemTotal: 1026060 kB [Root @ xinchang ~] # grep SwapTotal / proc / meminf

Vim shortcuts and configuration

Cursor movement h - move left j - move down k - move up l - move right w - jump by start of words (punctuation considered words) W - jump by words (spaces separate words) e - jump to end of words (punctuation considered words) E - jump to end of words (no

Vim shortcut keys and configuration

Cursor movement h - move left j - move down k - move up l - move right w - jump by start of words (punctuation considered words) W - jump by words (spaces separate words) e - jump to end of words (punctuation considered words) E - jump to end of words (no

Linux + Disk disk lvm / disk partition / disk mount / disk man

RedHat Linux LVM LVM - very very strong http://www.javaeye.com/topic/283065 LVM (Logic Volume Management, logical volume management), is the traditional commercial Unix to a senior with a disk management tool, unusually strong. LVM was ported to the

linux directory of free space under the View

Df command is linux system partition as the unit view the file system, you can add parameters to view the disk free space information, the command format: df-hl Display format: File system Size Used Avail Use% Mounted Points Filesystem Size Used Avai

linux directory to view the remaining space

Df command is a linux system to view the unit disk partition file system, you can add parameters to view disk space information, the command format: df-hl Display format: File system Size Used Avail Use% Mounted on Filesystem Size Used Avail Use% Mou

[Google paper III] MapReduce: simplified data processing on large clusters (below)

Reprinted please specify: http://duanple.blog.163.com/blog/static/70971767201092673696/ of phylips @ bmy 5. Performance In this section we will run a large cluster of machines in the two calculations to measure the performance of MapReduce. A calculation

Recovery is not only the mdf ldf database

Database which logs have to 1.5G, then stop server services, directly to the log deleted. Tragedy occurred, the database can not be used. Internet search, ah, most of them are on the sql server 2000 solution, while stopping service, one will then ope

Mdf restore only the database without ldf

Database which logs have to 1.5G, then stop server services directly to the log deleted. Tragedy occurred, the database can not be used. Internet search, ah, most of them are on the sql server 2000 solution, while stopping service, one would then ope

HTML Parser to use examples

htmlparser is a pure java library written in html parsing, it does not depend on other java libraries, mainly used for transformation or extraction of html. It high-speed parsing html, and can not go wrong. Now htmlparser latest version is 2.0. It is

Red Hat linux4 install oracle10g

Red Hat Enterprise Linux 4 install Oracle 10g RHEL4 download last week with the VM in the oracle10.2, encountered many problems in the middle. Summed up what made a post, if inadequate, please correct me, thank you! References: Oracle official website: ht

Several large data processing problems Road (turn)

1. To the A, B two files, the storage of 5 billion URL, each URL occupy 64 bytes, the memory limit is 4G, allows you to find the A, B files a common URL. Analysis: 1MB = 2 ^ 20 = 10 ^ 6 = 100 Million 1GB = 2 ^ 30 = 10 ^ 9 = 1 Billion 50 billion url =

Lucene 3.0.2 Getting Started

Doing a great job recently, mainly used in Heritrix 1.14.4 + Lucene 3.0.2 Mainly interested in, so had some prior Heritrix learning more fur, the more jobs to be more real, and that with the Heritrix crawl down the 1.5G file search index creation and

Getting started with Lucene

Doing a great job recently, mainly used in Heritrix 1.14.4 + Lucene 3.0.2 Mainly interested in, so had some prior Heritrix learning more fur, the more jobs to be more real, and that with the Heritrix crawl down the 1.5G file search index creation and impl

RHEL5 GFS configuration on shared disk cabinet

Background: 4 HP DL380G5 machine, configured as two 4-core 2.5G of the cpu, 32G memory; 1 unit HP MSA2000SAS type of disk enclosures, made a raid6, a 6T space. All machines installed RHEL5.1 AP's 64-bit version. 4 machines now need to be simultan

postgressql performance optimization configuration parameter

pg configuration parameters, performance optimization: PostgreSQL configuration file is a database directory (/ opt/PostgresPlus/8.3/data) under the postgresql.conf file, to support future versions 8.0 K, M, G such parameters, as long as modify the p

postgressql configuration parameters to optimize performance

pg configuration parameters, performance optimization: PostgreSQL configuration file is a database directory (/ opt/PostgresPlus/8.3/data) under the postgresql.conf file, version 8.0 can support future K, M, G such parameters, just modify the appropr

JVM tuning Summary-Xms-Xmx-Xmn-Xss (rpm)

Heap size JVM maximum heap size in the three limitations: the data model related to the operating system (32-bt or 64-bit) limits; system of free virtual memory limit; system's available physical memory limit. 32-bit system, generally limited to 1.5G

U disk to install on ubuntu

1, following the first linux partition (8G) First sub-fat32 area (1.5G), U disk storage for temporary use (must be the first partition, otherwise windows does not recognize the following) And then sub-ext4 area (6G) swap area (500M) 2, the next UltraISO t

Oracle take up too much memory, do not stop the service to remember when

Using the oracle really hard, not only a big scare to install the program more than 4.5G, but take up memory is quite powerful, if you have open in the case of Oracle's other software, while open, then you will find quite the card, I do the next

Oracle takes too much memory, do not cease to remember when

Oracle is really struggling with not only a big scare to reach the installer more than 4.5G, but also takes the memory is quite powerful, if you have been driving while under Oracle's other software to open, then you will find quite the card, I d

View disk space under Linux

Df command is a Linux system to view the disk space as the unit disk partition file system view, you can add parameters to view the disk free space information, the command format: df-hl Linux View disk space Display format: File system Size Used Ava

H2 Database - I really used the so-called production environment - and let me believe you slowly.

Sort of a small project - into the general business is certainly not so much money, on the government, dozens of "rice" is not too much - say Java is running much faster than PHP, but I do not really Internet Project intends to use Java, an

CVS to SVN migration

Last year, the newly recruited staff is where the company, did a CVS-> SVN migration, SVN repository is probably around 1.8G, spent a lot of time to deal with. As the rush to migrate does not take notes, leading to the migration project is another

Talk about Dropbox brush capacity

Original link http://fantasy614.appspot.com/?p=19001 Dropbox just have to see people in the promotion of their own Dropbox invitation, think many people do not know how to brush capacity, so there is this article. About Dropbox. http://www.iplaysoft.

JDK5.0 garbage collection optimization of - Don 't Pause Collection

http://blog.csdn.net/calvinxiu/archive/2007/05/18/1614473.aspx Study: white South, the latest version of the link: http://blog.csdn.net/calvinxiu/archive/2007/05/18/1614473.aspx, All rights reserved Please keep the original link. Originally wanted a more

Suse Enterprise 11 installation of Oracle 11.2 (2)

Study: fantlam reproduced the original source, please specify: http://www.linuxsight.com/blog/829 Then an article on Suse Enterprise 11 installed Oracle 11.2 (on) To continue the installation of oracle. Thought I had installed prior experience, this

Suse Enterprise 11 installed Oracle 11.2 (b)

Author: fantlam reproduced, please indicate the original source: http://www.linuxsight.com/blog/829 Then an article on Suse Enterprise 11 installed Oracle 11.2 (on) To the oracle installation. I had thought before installation experience, this can be

JVM Tuning summary-Xms-Xmx-Xmn-Xss

This article is reproduced from: http://unixboy.javaeye.com/blog/174173 Heap size is set JVM heap size of the largest of three limitations: the data model related to the operating system (32-bt or 64-bit) limits; system available virtual memory limit

Deployment of a simple GWT application to Google App Engine

This article describes how to deploy a GWT application to Google App Engine, this does not explain some terms directly applied. I completed the deployment of the first link given: http://gwtstarting.appspot.com/ , you can preview; Step one: add the plug-i
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