rrdtutorial

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DESCRIPTION

RRDtool is written by Tobias Oetiker with contributions from many people all around the world. This document is written by Alex van den Bogaerdt

RRDtool是由Tobias Oetike主導(dǎo)開發(fā)的，當(dāng)然少不了來自世界各地人們的貢獻，本文檔是由Alex van den Bogaerdt編寫的

        The documentation provided with RRDtool can be too technical for some people. This tutorial is here to help you understand the bases of RRDtool. It should prepare you to read the documentation youself. It also explains the general things about statistc with a focus on netwoking.

        RRDtool提供的documentation對大多數(shù)人來說可能太專業(yè)了，這里的tutorial幫助你理解RRDtool的基礎(chǔ)知識。它能為以后你自己閱讀documentation做好準(zhǔn)備。它也解釋了關(guān)于網(wǎng)絡(luò)統(tǒng)計方便的一些基本東西。

TUTORIAL

  import

     Please don't skip ahead in this document! The first part of this document explains the basics and may be boring. But if you don't understand the basics, the examples will not be as meaningful to you!

    請不要跳過文章前面的部分，這部分介紹的是基礎(chǔ)知識所有可能會無聊，但是如果你不理解這些基礎(chǔ)知識，下面的例子你將不會理解。

     Sometimes things change. This example used to provie numbers like "0.04" in stead of "4.00000e-02". Those are really the same numbers, just written down differently. Don't be alarmed if a future version of rrdtool display a slightly different form of output. The example in this document are correct for version 1.2.0 of RRDtool.

    有時候東西會改變，舉個例子，"0.004"會被"4.00000e-02"替代，這些實際上是相同的數(shù)字，僅僅表示方式不同而已。如果rrdtool未來的版本所輸出的內(nèi)容有細微調(diào)整不要驚恐。本文檔的例子適合1.2.0這個版本。

Also,sometimes bugs do occur. They may also influence the outcome of the examples. Example speed4.png was suffering from this(the handing unknown data in an if-statement was wrong). Normal data will be just fine( a bug in rrdtool wouldn't last long) but special cases like NaN,INF and so on may last a bit longer.Try anotherversion if you can, or just live with it.

    當(dāng)然，bugs也會出現(xiàn)，這可能會影響最后的輸出結(jié)果，例如 圖 speed4.png ，它正在遭受bug的影響，所有數(shù)據(jù)都是正常的，這固然可喜，但是特殊的數(shù)據(jù)例如 NaN,INF在之后的數(shù)據(jù)中可能會出現(xiàn)，如果有能力可以換一個版本，否則暫時先別管他

    I fixed the speed4.png example. There may be other examples which suffer from the same or a similar bug. Try to fix it yourself,which is a great excercise . But please do not submit your result as a fix to the source of this document. Discuss it on the user's list, or write to me.

    我修復(fù)了這個例子 speed4.png. 可能還會有其他的例子會受相同或相似bug的影響，試著去修復(fù)它，這將是一個非常大的挑戰(zhàn)，但是不要提交到文檔上來，可以在寫信給我

    what is RRDtool?

   what data can be put into an RRD?

    what can I do with this tool?

    what if I still have problems after reading this document?

    how will you help me?

    Your first Round Robin Database

    What has been created?

    Time to create some graphics

    Graphics with some math

    Graphics Magic

    Updates in Reality

    Some words on SNMP

    A Real World Example

    Consolidation Functions

    Let's review what you now should know

    Data Source Types

    RRDtool under the microscope

    Counter Wraps

    Data Resampling

    WRAPUP

    MAILINGLIST

    SEE ALSO

    AUTHOR

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