777 lines
10 KiB
HTML
777 lines
10 KiB
HTML
<HTML
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><HEAD
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><TITLE
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>Internet/Intranet Linux server</TITLE
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><META
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NAME="GENERATOR"
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CONTENT="Modular DocBook HTML Stylesheet Version 1.63
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"><LINK
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REL="HOME"
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TITLE="HP HOWTO"
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HREF="index.html"><LINK
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REL="UP"
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TITLE="
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Solutions and Sizing
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"
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HREF="sizing.html"><LINK
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REL="PREVIOUS"
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TITLE="
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Solutions and Sizing
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"
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HREF="sizing.html"><LINK
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REL="NEXT"
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TITLE="Linux as computing server"
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HREF="linux-computing.html"><META
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HTTP-EQUIV="Content-Type"
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CONTENT="text/html; charset=iso-8859-1"><META
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NAME="Author"
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CONTENT="Bruno Cornec"><META
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NAME="KeyWords"
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CONTENT="Linux,HP,HP-UX,Hewlett,Packard"></HEAD
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><BODY
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CLASS="SECT1"
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BGCOLOR="#FFFFFF"
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TEXT="#000000"
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LINK="#0000FF"
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VLINK="#840084"
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ALINK="#0000FF"
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><DIV
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CLASS="NAVHEADER"
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><TABLE
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WIDTH="100%"
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BORDER="0"
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CELLPADDING="0"
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CELLSPACING="0"
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><TR
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><TH
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COLSPAN="3"
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ALIGN="center"
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>HP HOWTO:
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Configuration Guide and Use of HP Products under Linux
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(Version 0.94)</TH
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></TR
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><TR
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><TD
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WIDTH="10%"
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ALIGN="left"
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VALIGN="bottom"
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><A
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HREF="sizing.html"
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><IMG
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SRC="images/prev.png"
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BORDER="0"
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ALT="Previous"></A
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></TD
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><TD
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WIDTH="80%"
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ALIGN="center"
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VALIGN="bottom"
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>Chapter 4. Solutions and Sizing</TD
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><TD
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WIDTH="10%"
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ALIGN="right"
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VALIGN="bottom"
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><A
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HREF="linux-computing.html"
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><IMG
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SRC="images/next.png"
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BORDER="0"
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ALT="Next"></A
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></TD
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></TR
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></TABLE
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><HR
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ALIGN="LEFT"
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WIDTH="100%"></DIV
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><DIV
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CLASS="SECT1"
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><H1
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CLASS="SECT1"
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><A
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NAME="LINUX-INTRANET"
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>4.2. Internet/Intranet Linux server</A
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></H1
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><DIV
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CLASS="SECT2"
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><H2
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CLASS="SECT2"
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><A
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NAME="AEN6698"
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>4.2.1. Web Server</A
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></H2
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><P
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>
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The Web service uses 2.5 MB of RAM, in static mode (simple HTML pages) and 5 MB of RAM in dynamic mode (HTML pages generated from perl, PHP, ...) per user.
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The disk space needed is function of the nature of the server, knowing that most of the consumption comes from images.
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Processor resources used are important, thus it could be useful to consider the increase in frequency and the addition of processors, because this type of traffic could be quite well done in parallel. With Apache 2.0 and the support of threads, it will become even more obvious.
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We will priviledge also the I/O speed with Ultra 2 LVD SCSI at 80 MB/s, if the budget allows it, and 10.000 RPM disks. </P
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><DIV
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CLASS="TABLE"
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><A
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NAME="AEN6701"
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></A
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><P
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><B
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>Table 4-3. Sizing of a static Web server</B
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></P
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><TABLE
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BORDER="1"
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WIDTH="100%"
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CLASS="CALSTABLE"
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><THEAD
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><TR
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><TH
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WIDTH="40%"
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ALIGN="LEFT"
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VALIGN="TOP"
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>Simultaneous users</TH
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><TH
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WIDTH="20%"
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ALIGN="LEFT"
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VALIGN="TOP"
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>RAM size</TH
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><TH
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WIDTH="20%"
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ALIGN="LEFT"
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VALIGN="TOP"
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>Disk size</TH
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><TH
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WIDTH="20%"
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ALIGN="LEFT"
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VALIGN="TOP"
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>Machine example</TH
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></TR
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></THEAD
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><TBODY
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><TR
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><TD
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WIDTH="40%"
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ALIGN="LEFT"
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VALIGN="TOP"
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> 1 - 100</TD
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><TD
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WIDTH="20%"
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ALIGN="LEFT"
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VALIGN="TOP"
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>256 MB</TD
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><TD
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WIDTH="20%"
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ALIGN="LEFT"
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VALIGN="TOP"
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>9 GB</TD
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><TD
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WIDTH="20%"
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ALIGN="LEFT"
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VALIGN="TOP"
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>E800</TD
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></TR
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><TR
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><TD
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WIDTH="40%"
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ALIGN="LEFT"
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VALIGN="TOP"
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>100 - 500</TD
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><TD
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WIDTH="20%"
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ALIGN="LEFT"
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VALIGN="TOP"
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>1 GB</TD
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><TD
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WIDTH="20%"
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ALIGN="LEFT"
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VALIGN="TOP"
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>9 GB</TD
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><TD
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WIDTH="20%"
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ALIGN="LEFT"
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VALIGN="TOP"
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>LC2000 Bi-processor</TD
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></TR
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><TR
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><TD
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WIDTH="40%"
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ALIGN="LEFT"
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VALIGN="TOP"
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>500 - 1000</TD
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><TD
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WIDTH="20%"
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ALIGN="LEFT"
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VALIGN="TOP"
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>2 GB</TD
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><TD
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WIDTH="20%"
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ALIGN="LEFT"
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VALIGN="TOP"
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>9 GB</TD
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><TD
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WIDTH="20%"
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ALIGN="LEFT"
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VALIGN="TOP"
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>LH6000 Quadri-processor</TD
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></TR
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></TBODY
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></TABLE
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></DIV
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><DIV
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CLASS="TABLE"
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><A
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NAME="AEN6730"
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></A
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><P
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><B
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>Table 4-4. Sizing of a dynamic Web server</B
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></P
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><TABLE
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BORDER="1"
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WIDTH="100%"
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CLASS="CALSTABLE"
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><THEAD
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><TR
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><TH
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WIDTH="40%"
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ALIGN="LEFT"
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VALIGN="TOP"
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>Simultaneous users</TH
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><TH
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WIDTH="20%"
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ALIGN="LEFT"
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VALIGN="TOP"
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>RAM size</TH
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><TH
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WIDTH="20%"
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ALIGN="LEFT"
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VALIGN="TOP"
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>Disk size</TH
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><TH
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WIDTH="20%"
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ALIGN="LEFT"
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VALIGN="TOP"
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>Machine example</TH
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></TR
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></THEAD
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><TBODY
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><TR
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><TD
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WIDTH="40%"
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ALIGN="LEFT"
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VALIGN="TOP"
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> 1 - 100</TD
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><TD
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WIDTH="20%"
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ALIGN="LEFT"
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VALIGN="TOP"
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>512 MB</TD
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><TD
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WIDTH="20%"
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ALIGN="LEFT"
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VALIGN="TOP"
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>9 GB</TD
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><TD
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WIDTH="20%"
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ALIGN="LEFT"
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VALIGN="TOP"
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>E800</TD
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></TR
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><TR
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><TD
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WIDTH="40%"
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ALIGN="LEFT"
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VALIGN="TOP"
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>100 - 500</TD
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><TD
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WIDTH="20%"
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ALIGN="LEFT"
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VALIGN="TOP"
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>2 GB</TD
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><TD
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WIDTH="20%"
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ALIGN="LEFT"
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VALIGN="TOP"
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>9 GB</TD
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><TD
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WIDTH="20%"
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ALIGN="LEFT"
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VALIGN="TOP"
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>LC2000 Bi-processor</TD
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></TR
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><TR
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><TD
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WIDTH="40%"
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ALIGN="LEFT"
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VALIGN="TOP"
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>500 - 1000</TD
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><TD
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WIDTH="20%"
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ALIGN="LEFT"
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VALIGN="TOP"
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>4 GB</TD
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><TD
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WIDTH="20%"
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ALIGN="LEFT"
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VALIGN="TOP"
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>18 GB</TD
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><TD
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WIDTH="20%"
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ALIGN="LEFT"
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VALIGN="TOP"
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>LH6000 Quadri-processor</TD
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></TR
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></TBODY
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></TABLE
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></DIV
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></DIV
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><DIV
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CLASS="SECT2"
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><H2
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CLASS="SECT2"
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><A
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NAME="AEN6759"
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>4.2.2. Mail Server</A
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></H2
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><P
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>
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Generally, this machine is used as both SMTP (sending and reception of messages) and POP/IMAP server (keeper of messages and manager of client accesses).
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The SMTP Mail service uses 2 MB of RAM per user.
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The POP/IMAP Mail service uses 2 MB of RAM per user.
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The disk space needed becomes more and more important as long as attachments (images, various documents) take the greatest place in exchanges via e-mail. We consider in that case that an average mail box size is 50 MB.
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Processor resources used are important, thus it could be useful to consider the increase in frequency and the addition of processors, because this type of traffic could be quite well done in parallel. </P
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><DIV
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CLASS="TABLE"
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><A
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NAME="AEN6762"
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></A
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><P
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><B
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>Table 4-5. Sizing of an e-mail server</B
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></P
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><TABLE
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BORDER="1"
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WIDTH="100%"
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CLASS="CALSTABLE"
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><THEAD
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><TR
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><TH
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WIDTH="40%"
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ALIGN="LEFT"
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VALIGN="TOP"
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>Simultaneous users</TH
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><TH
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WIDTH="20%"
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ALIGN="LEFT"
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VALIGN="TOP"
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>RAM size</TH
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><TH
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WIDTH="20%"
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ALIGN="LEFT"
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VALIGN="TOP"
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>Disk size</TH
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><TH
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WIDTH="20%"
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ALIGN="LEFT"
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VALIGN="TOP"
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>Machine example</TH
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></TR
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></THEAD
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><TBODY
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><TR
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><TD
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WIDTH="40%"
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ALIGN="LEFT"
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VALIGN="TOP"
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> 1 - 100</TD
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><TD
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WIDTH="20%"
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ALIGN="LEFT"
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VALIGN="TOP"
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>400 MB</TD
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><TD
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WIDTH="20%"
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ALIGN="LEFT"
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VALIGN="TOP"
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>9 GB</TD
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><TD
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WIDTH="20%"
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ALIGN="LEFT"
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VALIGN="TOP"
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>E800</TD
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></TR
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><TR
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><TD
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WIDTH="40%"
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ALIGN="LEFT"
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VALIGN="TOP"
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>100 - 500</TD
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><TD
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WIDTH="20%"
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ALIGN="LEFT"
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VALIGN="TOP"
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>2 GB</TD
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><TD
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WIDTH="20%"
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ALIGN="LEFT"
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VALIGN="TOP"
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>27 GB</TD
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><TD
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WIDTH="20%"
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ALIGN="LEFT"
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VALIGN="TOP"
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>LC2000 Bi-processor</TD
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></TR
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><TR
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><TD
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WIDTH="40%"
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ALIGN="LEFT"
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VALIGN="TOP"
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>500 - 1000</TD
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><TD
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WIDTH="20%"
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ALIGN="LEFT"
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VALIGN="TOP"
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>4 GB</TD
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><TD
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WIDTH="20%"
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ALIGN="LEFT"
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VALIGN="TOP"
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>54 GB</TD
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><TD
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WIDTH="20%"
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ALIGN="LEFT"
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VALIGN="TOP"
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>LH6000 Quadri-processor</TD
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></TR
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></TBODY
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></TABLE
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></DIV
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></DIV
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><DIV
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CLASS="SECT2"
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><H2
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CLASS="SECT2"
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><A
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NAME="AEN6791"
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>4.2.3. Firewall/Proxy/Web-Cache server</A
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></H2
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><P
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>
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Generally, this machine is both a Firewall server, a proxy (in both directions) and a cache for the Web because all requests go through it.
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The Firewall service uses 1 MB of RAM.
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The Proxy service uses 0.3 MB per incoming relay.
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The Web cache service uses 0.5 MB per user.
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The disk space needed is function of the parameters of the cache Web server. In that case, we consider 20 MB per user.
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Processor resources used are important, due to the analysis of IP packets. Thus it could be useful to consider the increase in frequency. </P
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><DIV
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CLASS="TABLE"
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><A
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NAME="AEN6794"
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></A
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><P
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><B
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>Table 4-6. Sizing of a Firewall/Proxy/Web-Cache server</B
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></P
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><TABLE
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BORDER="1"
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WIDTH="100%"
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CLASS="CALSTABLE"
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><THEAD
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><TR
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><TH
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WIDTH="40%"
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ALIGN="LEFT"
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VALIGN="TOP"
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>Simultaneous users</TH
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><TH
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WIDTH="20%"
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ALIGN="LEFT"
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VALIGN="TOP"
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>RAM size</TH
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><TH
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WIDTH="20%"
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ALIGN="LEFT"
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VALIGN="TOP"
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>Disk size</TH
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><TH
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WIDTH="20%"
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ALIGN="LEFT"
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VALIGN="TOP"
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>Machine example</TH
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></TR
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></THEAD
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><TBODY
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><TR
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><TD
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WIDTH="40%"
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ALIGN="LEFT"
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VALIGN="TOP"
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> 1 - 100</TD
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><TD
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WIDTH="20%"
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ALIGN="LEFT"
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VALIGN="TOP"
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>128 MB</TD
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><TD
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WIDTH="20%"
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ALIGN="LEFT"
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VALIGN="TOP"
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>9 GB</TD
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><TD
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WIDTH="20%"
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ALIGN="LEFT"
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VALIGN="TOP"
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>E800</TD
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></TR
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><TR
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><TD
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WIDTH="40%"
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ALIGN="LEFT"
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VALIGN="TOP"
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>100 - 500</TD
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><TD
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WIDTH="20%"
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ALIGN="LEFT"
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VALIGN="TOP"
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>512 MB</TD
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><TD
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WIDTH="20%"
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ALIGN="LEFT"
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VALIGN="TOP"
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>18 GB</TD
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><TD
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WIDTH="20%"
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ALIGN="LEFT"
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VALIGN="TOP"
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>E800</TD
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></TR
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><TR
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><TD
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WIDTH="40%"
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ALIGN="LEFT"
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VALIGN="TOP"
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>500 - 1000</TD
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><TD
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WIDTH="20%"
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ALIGN="LEFT"
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VALIGN="TOP"
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>1 GB</TD
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><TD
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WIDTH="20%"
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ALIGN="LEFT"
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VALIGN="TOP"
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>27 GB</TD
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><TD
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WIDTH="20%"
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ALIGN="LEFT"
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VALIGN="TOP"
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>E800</TD
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></TR
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></TBODY
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></TABLE
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></DIV
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></DIV
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><DIV
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CLASS="SECT2"
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><H2
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CLASS="SECT2"
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><A
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NAME="AEN6823"
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>4.2.4. Directory server</A
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></H2
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><P
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>
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Generally, this machine use a software like
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<A
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HREF="http://www.openldap.org"
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TARGET="_top"
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>OpenLDAP</A
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>
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to fulfill its goals.
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The LDAP service uses 1 MB of RAM and 10 kB of RAM per user.
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The disk space needed is of the same kind, so 10 kB per user.
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Processor resources used are moderated. </P
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><DIV
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CLASS="TABLE"
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><A
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NAME="AEN6827"
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></A
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><P
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><B
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>Table 4-7. Sizing of a LDAP server</B
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></P
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><TABLE
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BORDER="1"
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WIDTH="100%"
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CLASS="CALSTABLE"
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><THEAD
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><TR
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><TH
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WIDTH="40%"
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ALIGN="LEFT"
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VALIGN="TOP"
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>Simultaneous users</TH
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><TH
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WIDTH="20%"
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ALIGN="LEFT"
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VALIGN="TOP"
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>RAM size</TH
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><TH
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WIDTH="20%"
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ALIGN="LEFT"
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VALIGN="TOP"
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>Disk size</TH
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><TH
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WIDTH="20%"
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ALIGN="LEFT"
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VALIGN="TOP"
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>Machine example</TH
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></TR
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></THEAD
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><TBODY
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><TR
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><TD
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WIDTH="40%"
|
|
ALIGN="LEFT"
|
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VALIGN="TOP"
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> 1 - 100</TD
|
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><TD
|
|
WIDTH="20%"
|
|
ALIGN="LEFT"
|
|
VALIGN="TOP"
|
|
>64 MB</TD
|
|
><TD
|
|
WIDTH="20%"
|
|
ALIGN="LEFT"
|
|
VALIGN="TOP"
|
|
>9 GB</TD
|
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><TD
|
|
WIDTH="20%"
|
|
ALIGN="LEFT"
|
|
VALIGN="TOP"
|
|
>E800</TD
|
|
></TR
|
|
><TR
|
|
><TD
|
|
WIDTH="40%"
|
|
ALIGN="LEFT"
|
|
VALIGN="TOP"
|
|
>100 - 500</TD
|
|
><TD
|
|
WIDTH="20%"
|
|
ALIGN="LEFT"
|
|
VALIGN="TOP"
|
|
>64 MB</TD
|
|
><TD
|
|
WIDTH="20%"
|
|
ALIGN="LEFT"
|
|
VALIGN="TOP"
|
|
>9 GB</TD
|
|
><TD
|
|
WIDTH="20%"
|
|
ALIGN="LEFT"
|
|
VALIGN="TOP"
|
|
>E800</TD
|
|
></TR
|
|
><TR
|
|
><TD
|
|
WIDTH="40%"
|
|
ALIGN="LEFT"
|
|
VALIGN="TOP"
|
|
>500 - 1000</TD
|
|
><TD
|
|
WIDTH="20%"
|
|
ALIGN="LEFT"
|
|
VALIGN="TOP"
|
|
>128 MB</TD
|
|
><TD
|
|
WIDTH="20%"
|
|
ALIGN="LEFT"
|
|
VALIGN="TOP"
|
|
>9 GB</TD
|
|
><TD
|
|
WIDTH="20%"
|
|
ALIGN="LEFT"
|
|
VALIGN="TOP"
|
|
>E800</TD
|
|
></TR
|
|
></TBODY
|
|
></TABLE
|
|
></DIV
|
|
></DIV
|
|
></DIV
|
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><DIV
|
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CLASS="NAVFOOTER"
|
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><HR
|
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ALIGN="LEFT"
|
|
WIDTH="100%"><TABLE
|
|
WIDTH="100%"
|
|
BORDER="0"
|
|
CELLPADDING="0"
|
|
CELLSPACING="0"
|
|
><TR
|
|
><TD
|
|
WIDTH="33%"
|
|
ALIGN="left"
|
|
VALIGN="top"
|
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><A
|
|
HREF="sizing.html"
|
|
><IMG
|
|
SRC="images/prev.png"
|
|
BORDER="0"
|
|
ALT="Previous"></A
|
|
></TD
|
|
><TD
|
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WIDTH="34%"
|
|
ALIGN="center"
|
|
VALIGN="top"
|
|
><A
|
|
HREF="index.html"
|
|
><IMG
|
|
SRC="images/home.png"
|
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BORDER="0"
|
|
ALT="Home"></A
|
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></TD
|
|
><TD
|
|
WIDTH="33%"
|
|
ALIGN="right"
|
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VALIGN="top"
|
|
><A
|
|
HREF="linux-computing.html"
|
|
><IMG
|
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SRC="images/next.png"
|
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BORDER="0"
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ALT="Next"></A
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></TD
|
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></TR
|
|
><TR
|
|
><TD
|
|
WIDTH="33%"
|
|
ALIGN="left"
|
|
VALIGN="top"
|
|
>Solutions and Sizing</TD
|
|
><TD
|
|
WIDTH="34%"
|
|
ALIGN="center"
|
|
VALIGN="top"
|
|
><A
|
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HREF="sizing.html"
|
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><IMG
|
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SRC="images/up.png"
|
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BORDER="0"
|
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ALT="Up"></A
|
|
></TD
|
|
><TD
|
|
WIDTH="33%"
|
|
ALIGN="right"
|
|
VALIGN="top"
|
|
>Linux as computing server</TD
|
|
></TR
|
|
></TABLE
|
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></DIV
|
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></BODY
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></HTML
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> |