??xml version="1.0" encoding="utf-8" standalone="yes"?>青梅竹马是消防员在线,水蜜桃久久夜色精品一区,麻豆电影在线观看http://www.aygfsteel.com/alwayscy/category/31825.htmlzh-cnTue, 30 Mar 2021 09:41:50 GMTTue, 30 Mar 2021 09:41:50 GMT60我用q的机械键盘http://www.aygfsteel.com/alwayscy/archive/2021/03/30/435838.html我爱佛_我爱佛_Tue, 30 Mar 2021 07:45:00 GMThttp://www.aygfsteel.com/alwayscy/archive/2021/03/30/435838.htmlhttp://www.aygfsteel.com/alwayscy/comments/435838.htmlhttp://www.aygfsteel.com/alwayscy/archive/2021/03/30/435838.html#Feedback0http://www.aygfsteel.com/alwayscy/comments/commentRss/435838.htmlhttp://www.aygfsteel.com/alwayscy/services/trackbacks/435838.html阅读全文

我爱佛_ 2021-03-30 15:45 发表评论
]]>转：iostat 输出解析http://www.aygfsteel.com/alwayscy/archive/2011/09/17/358860.html我爱佛_我爱佛_Sat, 17 Sep 2011 03:37:00 GMThttp://www.aygfsteel.com/alwayscy/archive/2011/09/17/358860.htmlhttp://www.aygfsteel.com/alwayscy/comments/358860.htmlhttp://www.aygfsteel.com/alwayscy/archive/2011/09/17/358860.html#Feedback0http://www.aygfsteel.com/alwayscy/comments/commentRss/358860.htmlhttp://www.aygfsteel.com/alwayscy/services/trackbacks/358860.html

1. /proc/partitions

对于kernel 2.4, iostat 的数据的主要来源?/proc/partitionsQ而对于kernel 2.6, 数据主要来自/proc/diskstats或?sys/block/[block-device-name]/stat?

先看?/proc/partitions 中有些什么?

# cat /proc/partitions
major minor #blocks name rio rmerge rsect ruse wio wmerge wsect wuse running use aveq
  阅读全文

我爱佛_ 2011-09-17 11:37 发表评论
]]>[转] Stl 删除元素注意事项http://www.aygfsteel.com/alwayscy/archive/2011/07/18/354544.html我爱佛_我爱佛_Mon, 18 Jul 2011 09:02:00 GMThttp://www.aygfsteel.com/alwayscy/archive/2011/07/18/354544.htmlhttp://www.aygfsteel.com/alwayscy/comments/354544.htmlhttp://www.aygfsteel.com/alwayscy/archive/2011/07/18/354544.html#Feedback0http://www.aygfsteel.com/alwayscy/comments/commentRss/354544.htmlhttp://www.aygfsteel.com/alwayscy/services/trackbacks/354544.html阅读全文

我爱佛_ 2011-07-18 17:02 发表评论
]]>centos下用YUM安装RRDTOOL?/title><link>http://www.aygfsteel.com/alwayscy/archive/2011/02/03/343894.html</link><dc:creator>我爱佛_</dc:creator><author>我爱佛_</author><pubDate>Thu, 03 Feb 2011 13:38:00 GMT</pubDate><guid>http://www.aygfsteel.com/alwayscy/archive/2011/02/03/343894.html</guid><wfw:comment>http://www.aygfsteel.com/alwayscy/comments/343894.html</wfw:comment><comments>http://www.aygfsteel.com/alwayscy/archive/2011/02/03/343894.html#Feedback</comments><slash:comments>2</slash:comments><wfw:commentRss>http://www.aygfsteel.com/alwayscy/comments/commentRss/343894.html</wfw:commentRss><trackback:ping>http://www.aygfsteel.com/alwayscy/services/trackbacks/343894.html</trackback:ping><description><![CDATA[<div><span style="font-family: 'Lucida Grande', 'Lucida Sans Unicode', Arial, Verdana, sans-serif; font-size: 14px; line-height: 22px; ">创徏如下文g和内容：/etc/yum.repos.d/dag.repo</span></div> <div><span style="font-family: 'Lucida Grande', 'Lucida Sans Unicode', Arial, Verdana, sans-serif; font-size: 14px; line-height: 22px; ">q行Q?/span><span style="color: #008200; font-family: Consolas, 'Bitstream Vera Sans Mono', 'Courier New', Courier, monospace; font-size: 14px; line-height: 15px; white-space: pre; ">yum install rrdtool</span></div> <div> <div style="background-color: #eeeeee; font-size: 13px; border-left-color: #cccccc; padding-right: 5px; padding-bottom: 4px; padding-left: 4px; padding-top: 4px; width: 98%; word-break: break-all; "><!--<br /> <br /> Code highlighting produced by Actipro CodeHighlighter (freeware)<br /> http://www.CodeHighlighter.com/<br /> <br /> --><span style="color: #800000; font-weight: bold; ">[</span><span style="color: #800000; ">dag</span><span style="color: #800000; font-weight: bold; ">]</span><span style="color: #000000; "><br /> name</span><span style="color: #000000; ">=</span><span style="color: #000000; ">Dag RPM Repository for Red Hat Enterprise Linux<br /> baseurl</span><span style="color: #000000; ">=</span><span style="color: #000000; ">http://apt.sw.be/redhat/el$releasever/en/$basearch/dag<br /> gpgcheck</span><span style="color: #000000; ">=</span><span style="color: #000000; ">1</span><span style="color: #000000; "><br /> gpgkey</span><span style="color: #000000; ">=</span><span style="color: #000000; ">http://dag.wieers.com/rpm/packages/RPM-GPG-KEY.dag.txt<br /> enabled</span><span style="color: #000000; ">=</span><span style="color: #000000; ">1</span></div> </div> <img src ="http://www.aygfsteel.com/alwayscy/aggbug/343894.html" width = "1" height = "1" /><br><br><div align=right><a style="text-decoration:none;" href="http://www.aygfsteel.com/alwayscy/" target="_blank">我爱佛_</a> 2011-02-03 21:38 <a href="http://www.aygfsteel.com/alwayscy/archive/2011/02/03/343894.html#Feedback" target="_blank" style="text-decoration:none;">发表评论</a></div>]]></description></item><item><title>用YUM安装LAMPhttp://www.aygfsteel.com/alwayscy/archive/2010/04/20/318811.html我爱佛_我爱佛_Tue, 20 Apr 2010 01:56:00 GMThttp://www.aygfsteel.com/alwayscy/archive/2010/04/20/318811.htmlhttp://www.aygfsteel.com/alwayscy/comments/318811.htmlhttp://www.aygfsteel.com/alwayscy/archive/2010/04/20/318811.html#Feedback0http://www.aygfsteel.com/alwayscy/comments/commentRss/318811.htmlhttp://www.aygfsteel.com/alwayscy/services/trackbacks/318811.html
cd /etc/yum.repos.d/ 

wget http://centos.ustc.edu.cn/CentOS-Base.repo.5 

mv CentOS-Base.repo.5 CentOS-Base.repo 

因ؓ默认的配|文件中服务器地址用的版本h变量$releaseverQ所以需要将其替换ؓ实际的版本号Q否则是无法q接到服务器的，当前CentOS 最新版?.3Q所以我们修改CentOS-Base.repo 

vi CentOS-Base.repo 

在vi~辑器中q行全文件替?nbsp;

:%s/$releasever/5.3/

二、安?br /> 1Q安装apache

yum install httpd httpd-devel


2Q安装mysql

yum install mysql mysql-server mysql-devel


3Q安装php

yum install php php-mysql php-common php-gd php-mbstring php-mcrypt php-devel php-xml

4Q启动apache

   试php

   建立以下文g/var/www/html/test.php
   ~辑其内?br />
// test.php
<?php
phpinfo();
?>

5Q测?br />    在浏览器中输入：http://IP/test.php
   看是否显CPHP的信?br />
6Q设|开机启?br />
chkconfig httpd on



我爱佛_ 2010-04-20 09:56 发表评论
]]>用WORD来写WIKIhttp://www.aygfsteel.com/alwayscy/archive/2010/03/27/316686.html我爱佛_我爱佛_Sat, 27 Mar 2010 04:15:00 GMThttp://www.aygfsteel.com/alwayscy/archive/2010/03/27/316686.htmlhttp://www.aygfsteel.com/alwayscy/comments/316686.htmlhttp://www.aygfsteel.com/alwayscy/archive/2010/03/27/316686.html#Feedback2http://www.aygfsteel.com/alwayscy/comments/commentRss/316686.htmlhttp://www.aygfsteel.com/alwayscy/services/trackbacks/316686.htmlq里介绍了从各种格式文档向WIKI转化的办法：点这里?nbsp; 阅读全文

我爱佛_ 2010-03-27 12:15 发表评论
]]>SED最佛_?/title><link>http://www.aygfsteel.com/alwayscy/archive/2009/09/01/293409.html</link><dc:creator>我爱佛_</dc:creator><author>我爱佛_</author><pubDate>Tue, 01 Sep 2009 02:12:00 GMT</pubDate><guid>http://www.aygfsteel.com/alwayscy/archive/2009/09/01/293409.html</guid><wfw:comment>http://www.aygfsteel.com/alwayscy/comments/293409.html</wfw:comment><comments>http://www.aygfsteel.com/alwayscy/archive/2009/09/01/293409.html#Feedback</comments><slash:comments>1</slash:comments><wfw:commentRss>http://www.aygfsteel.com/alwayscy/comments/commentRss/293409.html</wfw:commentRss><trackback:ping>http://www.aygfsteel.com/alwayscy/services/trackbacks/293409.html</trackback:ping><description><![CDATA[     摘要: 讲了SED的用法，特别是换行c\命oQ以及多行替换?nbsp; <a href='http://www.aygfsteel.com/alwayscy/archive/2009/09/01/293409.html'>阅读全文</a><img src ="http://www.aygfsteel.com/alwayscy/aggbug/293409.html" width = "1" height = "1" /><br><br><div align=right><a style="text-decoration:none;" href="http://www.aygfsteel.com/alwayscy/" target="_blank">我爱佛_</a> 2009-09-01 10:12 <a href="http://www.aygfsteel.com/alwayscy/archive/2009/09/01/293409.html#Feedback" target="_blank" style="text-decoration:none;">发表评论</a></div>]]></description></item><item><title>RRD插入值的计算方式http://www.aygfsteel.com/alwayscy/archive/2008/09/17/229525.html我爱佛_我爱佛_Wed, 17 Sep 2008 13:15:00 GMThttp://www.aygfsteel.com/alwayscy/archive/2008/09/17/229525.htmlhttp://www.aygfsteel.com/alwayscy/comments/229525.htmlhttp://www.aygfsteel.com/alwayscy/archive/2008/09/17/229525.html#Feedback0http://www.aygfsteel.com/alwayscy/comments/commentRss/229525.htmlhttp://www.aygfsteel.com/alwayscy/services/trackbacks/229525.html阅读全文

我爱佛_ 2008-09-17 21:15 发表评论
]]>linux通过ntlm上网/vmware的image理/yum更新pȝhttp://www.aygfsteel.com/alwayscy/archive/2008/09/08/227655.html我爱佛_我爱佛_Mon, 08 Sep 2008 01:57:00 GMThttp://www.aygfsteel.com/alwayscy/archive/2008/09/08/227655.htmlhttp://www.aygfsteel.com/alwayscy/comments/227655.htmlhttp://www.aygfsteel.com/alwayscy/archive/2008/09/08/227655.html#Feedback0http://www.aygfsteel.com/alwayscy/comments/commentRss/227655.htmlhttp://www.aygfsteel.com/alwayscy/services/trackbacks/227655.html阅读全文

我爱佛_ 2008-09-08 09:57 发表评论
]]>cfengine最单说?/title><link>http://www.aygfsteel.com/alwayscy/archive/2008/07/28/217990.html</link><dc:creator>我爱佛_</dc:creator><author>我爱佛_</author><pubDate>Mon, 28 Jul 2008 03:12:00 GMT</pubDate><guid>http://www.aygfsteel.com/alwayscy/archive/2008/07/28/217990.html</guid><wfw:comment>http://www.aygfsteel.com/alwayscy/comments/217990.html</wfw:comment><comments>http://www.aygfsteel.com/alwayscy/archive/2008/07/28/217990.html#Feedback</comments><slash:comments>0</slash:comments><wfw:commentRss>http://www.aygfsteel.com/alwayscy/comments/commentRss/217990.html</wfw:commentRss><trackback:ping>http://www.aygfsteel.com/alwayscy/services/trackbacks/217990.html</trackback:ping><description><![CDATA[     摘要: 在多至上万台L的系l中Q集中定义配|，然后自动应用到所有主机?nbsp; <a href='http://www.aygfsteel.com/alwayscy/archive/2008/07/28/217990.html'>阅读全文</a><img src ="http://www.aygfsteel.com/alwayscy/aggbug/217990.html" width = "1" height = "1" /><br><br><div align=right><a style="text-decoration:none;" href="http://www.aygfsteel.com/alwayscy/" target="_blank">我爱佛_</a> 2008-07-28 11:12 <a href="http://www.aygfsteel.com/alwayscy/archive/2008/07/28/217990.html#Feedback" target="_blank" style="text-decoration:none;">发表评论</a></div>]]></description></item><item><title>q雷Thunder.exe一下蝲Q卡巴的avp.exe的CPU׃M解决Ҏhttp://www.aygfsteel.com/alwayscy/archive/2008/06/28/211272.html我爱佛_我爱佛_Sat, 28 Jun 2008 00:11:00 GMThttp://www.aygfsteel.com/alwayscy/archive/2008/06/28/211272.htmlhttp://www.aygfsteel.com/alwayscy/comments/211272.htmlhttp://www.aygfsteel.com/alwayscy/archive/2008/06/28/211272.html#Feedback6http://www.aygfsteel.com/alwayscy/comments/commentRss/211272.htmlhttp://www.aygfsteel.com/alwayscy/services/trackbacks/211272.html

如下图所CZ|设|不扫描q雷|络通信卛_Q?



我爱佛_ 2008-06-28 08:11 发表评论
]]>Mylyn――谁用谁知道Q?/title><link>http://www.aygfsteel.com/alwayscy/archive/2008/06/15/208022.html</link><dc:creator>我爱佛_</dc:creator><author>我爱佛_</author><pubDate>Sun, 15 Jun 2008 05:02:00 GMT</pubDate><guid>http://www.aygfsteel.com/alwayscy/archive/2008/06/15/208022.html</guid><wfw:comment>http://www.aygfsteel.com/alwayscy/comments/208022.html</wfw:comment><comments>http://www.aygfsteel.com/alwayscy/archive/2008/06/15/208022.html#Feedback</comments><slash:comments>7</slash:comments><wfw:commentRss>http://www.aygfsteel.com/alwayscy/comments/commentRss/208022.html</wfw:commentRss><trackback:ping>http://www.aygfsteel.com/alwayscy/services/trackbacks/208022.html</trackback:ping><description><![CDATA[     摘要: 怿很多人都有过q样的经验，改一个东西可能就几分钟，但找到在哪改、会影响C么地方，却要花半时。有了这个工P让我们在非常大的目里，在文件和代码的vz里能马上找到所要关注的部分。有的h_我有CTRL+SHIFT+TQ可是你能记住几q前一个项目里的类名吗Q而查阅文字描q的d却要Ҏ得多?<br> <br>Mylyn的项目领队这栯道：q个新名字是向“髓”物质致敬，该物质通过使神l元更有效的传导甉|来促q你的思考。我们已l听C用者声UͼMylyn工具他们的效率提高C他们觉得正在以思考的速度~码的地步。减阻我们生产力的UI摩擦是Mylyn目全部的内宏V?<br> <br>此文是我之Mylyn初体验，不搞大而全Q而只把我觉得q个工具最爽、最KILLER的功能介l出来?nbsp; <a href='http://www.aygfsteel.com/alwayscy/archive/2008/06/15/208022.html'>阅读全文</a><img src ="http://www.aygfsteel.com/alwayscy/aggbug/208022.html" width = "1" height = "1" /><br><br><div align=right><a style="text-decoration:none;" href="http://www.aygfsteel.com/alwayscy/" target="_blank">我爱佛_</a> 2008-06-15 13:02 <a href="http://www.aygfsteel.com/alwayscy/archive/2008/06/15/208022.html#Feedback" target="_blank" style="text-decoration:none;">发表评论</a></div>]]></description></item><item><title>转：无鼠标用FIREFOX(热键 hotkey 快捷键列?http://www.aygfsteel.com/alwayscy/archive/2008/06/02/205299.html我爱佛_我爱佛_Mon, 02 Jun 2008 04:56:00 GMThttp://www.aygfsteel.com/alwayscy/archive/2008/06/02/205299.htmlhttp://www.aygfsteel.com/alwayscy/comments/205299.htmlhttp://www.aygfsteel.com/alwayscy/archive/2008/06/02/205299.html#Feedback0http://www.aygfsteel.com/alwayscy/comments/commentRss/205299.htmlhttp://www.aygfsteel.com/alwayscy/services/trackbacks/205299.html# Select search bar: Ctrl/Cmd+K   阅读全文

我爱佛_ 2008-06-02 12:56 发表评论
]]>ECLIPSE最常用快捷键排?/title><link>http://www.aygfsteel.com/alwayscy/archive/2008/06/01/205161.html</link><dc:creator>我爱佛_</dc:creator><author>我爱佛_</author><pubDate>Sun, 01 Jun 2008 08:31:00 GMT</pubDate><guid>http://www.aygfsteel.com/alwayscy/archive/2008/06/01/205161.html</guid><wfw:comment>http://www.aygfsteel.com/alwayscy/comments/205161.html</wfw:comment><comments>http://www.aygfsteel.com/alwayscy/archive/2008/06/01/205161.html#Feedback</comments><slash:comments>0</slash:comments><wfw:commentRss>http://www.aygfsteel.com/alwayscy/comments/commentRss/205161.html</wfw:commentRss><trackback:ping>http://www.aygfsteel.com/alwayscy/services/trackbacks/205161.html</trackback:ping><description><![CDATA[     摘要: ECLIPSE的快捷键非常多，如果只挑3个，我就选择它们Q?<br> <br>1 <br> Alt + / <br> 自动完成 <br> <br>2 <br> Ctrl + O <br> Quick OutlineQ函数列表，可以定制q个H口 <br> <br>3 <br> CtrlQK (加SHIFT是向上） <br> 向下查找选中的字W串 <br>  <a href='http://www.aygfsteel.com/alwayscy/archive/2008/06/01/205161.html'>阅读全文</a><img src ="http://www.aygfsteel.com/alwayscy/aggbug/205161.html" width = "1" height = "1" /><br><br><div align=right><a style="text-decoration:none;" href="http://www.aygfsteel.com/alwayscy/" target="_blank">我爱佛_</a> 2008-06-01 16:31 <a href="http://www.aygfsteel.com/alwayscy/archive/2008/06/01/205161.html#Feedback" target="_blank" style="text-decoration:none;">发表评论</a></div>]]></description></item><item><title>EXT2.1+FIREFOX3.0+FIREBUG1.2+Spket1.6.12Q编辑调试JAVASCRIPTE序的利?/title><link>http://www.aygfsteel.com/alwayscy/archive/2008/05/30/204068.html</link><dc:creator>我爱佛_</dc:creator><author>我爱佛_</author><pubDate>Fri, 30 May 2008 05:43:00 GMT</pubDate><guid>http://www.aygfsteel.com/alwayscy/archive/2008/05/30/204068.html</guid><wfw:comment>http://www.aygfsteel.com/alwayscy/comments/204068.html</wfw:comment><comments>http://www.aygfsteel.com/alwayscy/archive/2008/05/30/204068.html#Feedback</comments><slash:comments>2</slash:comments><wfw:commentRss>http://www.aygfsteel.com/alwayscy/comments/commentRss/204068.html</wfw:commentRss><trackback:ping>http://www.aygfsteel.com/alwayscy/services/trackbacks/204068.html</trackback:ping><description><![CDATA[     摘要: FF是深受广大程序员喜爱Q不是因为它的快Q而是因ؓFIREBUG1.2版本Q点q里Q这个宇宙无敌插Ӟ调试JSE序变成了一片小蛋糕?<br>最后，要说一下FF的几个小技?nbsp; <a href='http://www.aygfsteel.com/alwayscy/archive/2008/05/30/204068.html'>阅读全文</a><img src ="http://www.aygfsteel.com/alwayscy/aggbug/204068.html" width = "1" height = "1" /><br><br><div align=right><a style="text-decoration:none;" href="http://www.aygfsteel.com/alwayscy/" target="_blank">我爱佛_</a> 2008-05-30 13:43 <a href="http://www.aygfsteel.com/alwayscy/archive/2008/05/30/204068.html#Feedback" target="_blank" style="text-decoration:none;">发表评论</a></div>]]></description></item><item><title>RRDTool的安装及使用向导http://www.aygfsteel.com/alwayscy/archive/2006/12/06/85775.html我爱佛_我爱佛_Wed, 06 Dec 2006 10:45:00 GMThttp://www.aygfsteel.com/alwayscy/archive/2006/12/06/85775.htmlhttp://www.aygfsteel.com/alwayscy/comments/85775.htmlhttp://www.aygfsteel.com/alwayscy/archive/2006/12/06/85775.html#Feedback1http://www.aygfsteel.com/alwayscy/comments/commentRss/85775.htmlhttp://www.aygfsteel.com/alwayscy/services/trackbacks/85775.html下蝲
q入
http://oss.oetiker.ch/rrdtool/pub/
下蝲最新的RRDTool

再进?br /> http://oss.oetiker.ch/rrdtool/pub/libs/
下蝲所需要库Q?br /> [ ]freetype-2.1.10.tar.bz2   04-May-2006 15:18  1.0M 
[CMP]libpng-1.2.10.tar.gz      04-May-2006 15:18  813K 
[CMP]libart_lgpl-2.3.17.tar.gz 04-May-2006 15:18  386K 
[CMP]zlib-1.2.3.tar.gz         18-Jul-2005 15:38  485K 


讄目录

讄安装目录及编译目?
BUILD_DIR=/tmp/rrdbuild
INSTALL_DIR=/usr/local/rrdtool-1.2.15
mkdir -p $BUILD_DIR
cd $BUILD_DIR

把下载的所有库攑օq个目录


~译Zlib

tar  zxf zlib-1.2.3.tar.gz
cd zlib-1.2.3
env CFLAGS="-O3 -fPIC" ./configure --prefix=$BUILD_DIR/lb
make
make install


~译LibPng

tar zxvf libpng-1.2.10.tar.gz
cd libpng-1.2.10
env CPPFLAGS="-I$BUILD_DIR/lb/include" LDFLAGS="-L$BUILD_DIR/lb/lib" CFLAGS="-O3 -fPIC" \
    ./configure --disable-shared --prefix=$BUILD_DIR/lb
make
make install


~译FreeType

tar jxvf freetype-2.1.10.tar.bz2
cd freetype-2.1.10
env CPPFLAGS="-I$BUILD_DIR/lb/include" LDFLAGS="-L$BUILD_DIR/lb/lib" CFLAGS="-O3 -fPIC" \
    ./configure --disable-shared --prefix=$BUILD_DIR/lb
make
make install

注意Q此处解压是?j"参数Q因为是bz2包；其它是带"z"参数


~译libart_lgpl

tar zxvf libart_lgpl-2.3.17.tar.gz
cd libart_lgpl-2.3.17
env CFLAGS="-O3 -fPIC" ./configure --disable-shared --prefix=$BUILD_DIR/lb
make
make install


~译RRDTool

IR=-I$BUILD_DIR/lb/include
CPPFLAGS="$IR $IR/libart-2.0 $IR/freetype2 $IR/libpng"
LDFLAGS="-L$BUILD_DIR/lb/lib"
CFLAGS=-O3
export CPPFLAGS LDFLAGS CFLAGS

./configure --prefix=$INSTALL_DIR --disable-python --disable-tcl
make clean
make
make install

最后，可以BIN目录加入PATHQ?br /> export PATH=/usr/local/rrdtool-1.2.15/bin:$PATH



使用要点
建库
  rrdtool create test.rrd             \
           --start 920804400          \
           DS:speed:COUNTER:600:U:U   \
           RRA:AVERAGE:0.5:1:24       \
           RRA:AVERAGE:0.5:6:10

DS是数据源Q默认是5分钟采一ơ，6Q?0表示Q每?分钟采一ơ，共采6ơ计一ơ^均|卛_时Q，q留10ơ这Lq_|保留5时数据Q?br />
加入数据
rrdtool update test.rrd 920808300:12420
即以time:value对的方式向它d

出图
rrdtool graph speed.png                                 \
        --start 920804400 --end 920808000               \
        DEF:myspeed=test.rrd:speed:AVERAGE              \
        LINE2:myspeed#FF0000

LINE2表示?象素的线来画QFF0000是红?br /> DEF是定义一个变?br />
计算后出?br /> rrdtool graph speed3.png                             \
     --start 920804400 --end 920808000               \
     --vertical-label km/h                           \
     DEF:myspeed=test.rrd:speed:AVERAGE              \
     "CDEF:kmh=myspeed,3600,*"                       \
     CDEF:fast=kmh,100,GT,kmh,0,IF                   \
     CDEF:good=kmh,100,GT,0,kmh,IF                   \
     HRULE:100#0000FF:"Maximum allowed"              \
     AREA:good#00FF00:"Good speed"                   \
     AREA:fast#FF0000:"Too fast"

CDEF是计变?br /> kmh=myspeed,3600,*表示Qkmh是myspeed*3600Q引h为防?被误?br /> kmh,100,GT,kmh,IF表示Q?(( kmh,100 ) GT ), 0, kmh) IFQ也卛_断是kmh大于100?|否则取值kmh
HRULE是画一条警戒线

DSU类
COUNTER - 持箋增长|RRD会前后相减再除时间计^均?br /> GAUGE - 量|RRD不做处理Q直接存
DERIVE - 变化值可以ؓ负，其它与COUNTER一?br /> ABSOLUTE - 也是不改变其|直接存（与GAUGE有何区别呢？Q?br />
最大值的WRAP
当到达最大值时QCOUNTER会被RESETQ导致前后两值相减ؓ负，q不W合COUNTER的定义，所以它会尝试?2位的最大gq个负值相加来得到正常的正|如果q是负，它会试?4位的最大值来使它变正。大部分情况可以处理?br />

以上内容主要参考如下网：
http://oss.oetiker.ch/rrdtool/doc/rrdbuild.en.html
http://oss.oetiker.ch/rrdtool/tut/rrdtutorial.en.html

我爱佛_ 2006-12-06 18:45 发表评论
]]> վ֩ģ壺 | | | | ˮ| ϰ| ̨| ͺ| ƽȪ| | ï| | ̨| | ÷| | ɽ| | گ| ǿ| | ƽ| | | | Ҫ| | ̷| ͩ| | ۩| ԭ| ƽ| Զ| | | | | ϰˮ| | Զ|