4 files changed, 135 insertions, 0 deletions
diff --git a/sload.buetow.org/content/50.SVN-Download.xml b/sload.buetow.org/content/50.SVN-Download.xml
new file mode 100644
index 0000000..cace27e
--- /dev/null
+++ b/sload.buetow.org/content/50.SVN-Download.xml
@@ -0,0 +1,7 @@
+<?xml version="1.0" encoding="ISO-8859-1" standalone="yes" ?>
+<content>
+  <pagetitle>SVN Download</pagetitle>
+  <text>SLoad can be downloaded from SVN. Use the following steps to do so:</text>
+  <pretext>svn co https://ssl.buetow.org/repos/utils/sload/</pretext> 
+</content>
+
diff --git a/sload.buetow.org/content/98.contact.xml b/sload.buetow.org/content/98.contact.xml
new file mode 100644
index 0000000..f46ee65
--- /dev/null
+++ b/sload.buetow.org/content/98.contact.xml
@@ -0,0 +1,20 @@
+<?xml version="1.0" encoding="ISO-8859-1" standalone="yes" ?>
+<content>
+	<pagetitle>Contact Me/Us</pagetitle>
+	<text>
+		<noop>Please use the </noop>
+		<namedlink href="http://web.buetow.org/listinfo/dev">Development Mailing List</namedlink> 
+		<noop> for any considerations of this humble programming project or any other programming project of mine.</noop>
+	</text>
+	<text>
+		<noop>But you may also use other methods such as listed </noop>
+		<namedlink href="http://contact.buetow.org">on this site</namedlink> 
+		<noop> for example.</noop>
+	</text>
+	<text>
+		<noop>If you are interested in other projects please visit </noop>
+		<link>http://dev.buetow.org</link> 
+		<noop> :)</noop>
+	</text>
+</content>
+
diff --git a/sload.buetow.org/content/99.license.xml b/sload.buetow.org/content/99.license.xml
new file mode 100644
index 0000000..3f04d0a
--- /dev/null
+++ b/sload.buetow.org/content/99.license.xml
@@ -0,0 +1,54 @@
+<?xml version="1.0" encoding="ISO-8859-1" standalone="yes" ?>
+<content>
+  <pagetitle>License</pagetitle>
+  <text>
+    <noop>SLoad is (C) by Paul Buetow.</noop>
+  </text>
+  <text>
+    <noop>
+		All rights reserved.
+	</noop>
+	<newline />
+	<newline />
+	<noop>
+	Redistribution and use in source and binary forms, with or without
+	modification, are permitted provided that the following conditions are met:
+	</noop>
+	<newline />
+	<newline />
+	<noop>
+    * Redistributions of source code must retain the above copyright
+      notice, this list of conditions and the following disclaimer.
+	</noop>
+	<newline />
+	<newline />
+	<noop>
+    * Redistributions in binary form must reproduce the above copyright
+      notice, this list of conditions and the following disclaimer in the
+      documentation and/or other materials provided with the distribution.
+	</noop>
+	<newline />
+	<newline />
+	<noop>
+    * Neither the name of buetow.org nor the names of its contributors may 
+	  be used to endorse or promote products derived from this software 
+	  without specific prior written permission.
+	</noop>
+	<newline />
+	<newline />
+	<noop>
+THIS SOFTWARE IS PROVIDED BY Paul Buetow ``AS IS'' AND ANY EXPRESS OR 
+IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED 
+WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+DISCLAIMED. IN NO EVENT SHALL Paul Buetow BE LIABLE FOR ANY DIRECT, 
+INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES 
+(INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR 
+ SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 
+HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING 
+IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 
+POSSIBILITY OF SUCH DAMAGE.
+    </noop>
+  </text>
+</content>
+
diff --git a/sload.buetow.org/content/home.xml b/sload.buetow.org/content/home.xml
new file mode 100644
index 0000000..24c99ae
--- /dev/null
+++ b/sload.buetow.org/content/home.xml
@@ -0,0 +1,54 @@
+<?xml version="1.0" encoding="ISO-8859-1" standalone="yes" ?>
+<content>
+	<pagetitle>SLoad</pagetitle>
+	<textheader>Calculating server CPU loads</pagetitle>
+	<text>
+		<rimg href="?document=images/haskell.png" title="Haskell" /> 
+		<noop>In order to learn functional programming and to calculate server loads at work I programmed in my spare time this small tool using the purely functional programming language </noop>
+		<namedlink href="http://www.haskell.org">Haskell!</namedlink>
+		<noop>SLoad is an abbreviation for serverload. SLoad uses basic parameters (current CPU peak, current requests per second) for approximating the need of additional servers.</noop> 
+	</text>
+	<text>In order to get started check it out from the Subversion repository. You also need to install GHC (the Haskell compiler).</noop>
+	<code>
+pbuetow@earth:~/svn/sload/trunk$ make
+ghc SLoad.hs -o sload
+</code> 
+	<text>Lets imagine you own an apache server cluster which consists of 12 physical servers. The current maximum CPU usage (CPU peak) is 70%. A single server of the cluster handles at the moment 323 requests per seconds (request peak). And you want to know "does my farm handle 5000000 more requests per day?":</text>
+	<code>
+pbuetow@earth:~/svn/sload/trunk$ ./sload --name=serverfarm.example.net --servers=12 \
+	--cpuPeak=70 --peak=323 --requests=5000000
+Requests : 5000000.0
+Percentage of req. to use: 100.0
+Approximated peak: 277.77777 requests per second (Peak =  2 * (5000000.0/(60 * 60 * 10)))
+serverfarm.example.net (12.0 Servers):
+        currentPeakPerServer: 323.0
+        currentCpuPeakPerServer: 70.0
+        currentPeakPerFarm: 3876.0
+        possiblePeakPerFarm: 5038.8
+        possibleAddPeak (possiblePeakPerFarm - currentPeakPerFarm): 1162.7998
+        addPeakPerServer: 23.148148
+        addPeakPerFarm: 277.77777
+        leftPeak (possibleAddPeak - addPeakPerFarm): 885.02203
+        currentCpuPerPeak (currentCpuPeakPerServer / currentPeakPerServer): 0.21671827
+        neededCpuPeakPerServer (currentCpuPeakPerServer + addPeakPerServer * currentCpuPerPeak): \
+	75.016624
+</code>
+	<text>The approximated peak is being calculated using 2 * (requestsPerDay/10h). This formular has been well-tried and tested. It is not proven that this formular is always right, but it is more a 'worst case' approach. Which is ok for calculating server loads as long as you don't do a 'best case' calculation which may lead to a server overload. The value of neededCpuPeakPerServer shows if the cluster will handle the additional amount of requests. If neededCpuPeakPerSerer is less than 85 it should be ok. A value between 85 and 100 may be critical. A value more than 100 shows that there is definitive not enough power behind your cluster.</text>
+	<text>
+		<enumeration>
+			<enumitem>Requests: Requests per day your server should handle additionally to the current server load. You want to find out if your server cluster will handle this.</enumitem>
+			<enumitem>Percentage of req. to use: If you use 50, only half of "Requests" will be used in the following calculations.</enumitem>.
+			<enumitem>currentPeakPerServer: Requests per seconds a single server of the cluster handles (peak)</enumitem>
+			<enumitem>currentCpuPeakPerServer: The maximum (peak) CPU load of one of your servers.</enumitem>
+			<enumitem>currentPeakPerFarm: currentPeakPerServer * number of servers in the cluster.</enumitem>
+			<enumitem>possiblePeakPerFarm: How many requests per seconds your farm may handle (depending on the CPU % which is left)</enumitem>
+			<enumitem>possibleAddPeak: How many requests per seconds your farm may handle additionally to the CPU usage (depending on the CPU % which is left)</enumitem>
+			<enumitem>addPeakPerServer: How many requests per seconds a single server of your cluster may handle additionally.</enumitem>
+			<enumitem>addPeakPerFarm: addPeakPerServer * number of servers in the cluster.</enumitem>
+			<enumitem>leftPeak: How many requests per second can be handled more even after adding "Requests" to the cluster.</enumitem>
+			<enumitem>currentCpuPerPeak: How many CPU % is needed for a single request.</enumitem>
+			<enumitem>neededCpuPeakPerServer: How many CPU % (peak) is needed for a single server of the cluster after adding "Requests".</enumitem>
+		</enumeration>
+	</text>
+</content>
+