Table Virtual World
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<br /><applet code="org.jdesktop.applet.util.JNLPAppletLauncher"
<br /> width=512 height=512
<br /> archive="lei-tableworld.jar,
<br /> http://download.java.net/media/applet-launcher/applet-launcher.jar,
<br /> http://download.java.net/media/java3d/webstart/release/j3d/latest/j3dcore.jar,
<br /> http://download.java.net/media/java3d/webstart/release/j3d/latest/j3dutils.jar,
<br /> http://download.java.net/media/java3d/webstart/release/vecmath/latest/vecmath.jar,
<br /> http://download.java.net/media/jogl/builds/archive/jsr-231-webstart-current/jogl.jar,
<br /> http://download.java.net/media/gluegen/webstart/gluegen-rt.jar">
<br /> <param name="codebase_lookup" value="false">
<br /> <param name="subapplet.classname" value="edu.nova.j3d.tableworld.Table">
<br /> <param name="subapplet.displayname" value="Java 3D Project1">
<br /> <param name="jnlpNumExtensions" value="1">
<br /> <param name="jnlpExtension1" value="http://download.java.net/media/java3d/webstart/release/java3d-latest.jnlp">
<br /> <param name="progressbar" value="true">
<br /> <param name="noddraw.check" value="true">
<br /></applet>
<br /><p>
<br /></br>
<br />Java3D Table Virtual World Features
<br /><ul>
<br /> <li>The table is created with 4 legs. </li>
<br /> <li>There are 7 objects (a lamp, a lightened box next to the lamp with a shade plane, an un-lightened lod, an image texture, a cart, a collision sensor and a water pool) that sit on the table top. In addition, there are 3 objects (the clock, the 3D photo and the moving star) in the universe, which is out of the table plane.</li>
<br /> <li>The 3D wall image texture on the table is capable of being dragged across the table top by click and holding the left mouse key while dragging. </li>
<br /> <li>The red lod will be translated to the predefined upper coordinated location back and forth while the mouse key is clicked. </li>
<br /> <li>The 3D wall image texture will rotate in place with angle of 1 as the mouse key is clicked. </li>
<br /> <li>The lighting effect is shown during the cycle of the moving of the star. </li>
<br /> <li>The red lod will be translated to the predefined upper coordinated location back and forth while the mouse key is clicked. </li>
<br /> <li>The 3D wall image texture will rotate in place with angle of 1 as the mouse key is clicked. </li>
<br /> <li>The lighting effect is shown during the cycle of the moving of the star. </li>
<br /> <li>The objects that exhibit behavior by cutomized Behavior class:a star is animated to move around the table and the water stand creates water pool. A clock is animated with ticking of clock. The cart is animated to move back and forth.</li>
<br /> <li>All objects except the box are geometry objects created by LineArray, LineStripArray, TriangleFanArray, TriangleStripArray, QuadArray and IndexedQuadArray to replace the feature of VRML IndexedFaceSet node. </li>
<br /> <li>All objects except the box are geometry objects created by LineArray, LineStripArray, TriangleFanArray, TriangleStripArray, QuadArray and IndexedQuadArray to replace the feature of VRML extrusion node. </li>
<br /><li>The table can be dragged to any location by pointing to table and holding mouse key, but to go back to the original location by exit browser and restart the applet for convenience</li>
<br /></ul>
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<h2 class='date-header'><span>Tuesday, September 16, 2008</span></h2>
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My network pauses was resolved, and it seems to be the NetworkManager<br />not using the madwifi driver.<br /><br />In this case, following in daemon.log are used<br />"blah....NetworkManager: <info> Supplicant state changed 0" // when pausing<br />"blah....NetworkManager: <info> Supplicant state changed 1" // on resume<br /><br />The solution is to use "wicd", which works perfectly with the madwifi/atheros driver.<br />The directions are here<br /><a href="http://wicd.sourceforge.net/download.php">http://wicd.sourceforge.net/download.php</a>.<br /></info></info>
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<h2 class='date-header'><span>Saturday, September 13, 2008</span></h2>
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<a href='https://ttoulliu2002.blogspot.com/2008/09/q-learning-facts.html'>Q-learning vs Model-based or knowledge-based Methods</a>
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1. Learn action-value representation -- Q value instead of learning utility<br />2. Denote Q-values related to utility values<br />3. Q function is a way of utility function, but Q function does not need a model for learning action selection. So it is model free since temporal difference does not need to know transition model but only handle the changes. How to deal with the things are no-change. It is a frame problem.<br />4. Agent function (an evaluation function) is represented by Q function instead of model + utility function<br />5. Traditional AI is to build knowledge-based method (build a representation of some aspect of the environment in which agent is situated).<br />6. environment becomes complex, the advantages of a knowledge-based approach become more apparent. Knowledge-based model representation has met more success than Q-learning methods
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<h2 class='date-header'><span>Thursday, September 11, 2008</span></h2>
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<a href='https://ttoulliu2002.blogspot.com/2008/09/zpool-iostat-v-df-kh.html'>zpool iostat -v ------------------ df-kh</a>
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zpool iostat -v is much more intuitive than df -h
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A discrete independent variable leads to a discontinuous function. A infinitesimal change in the independent variable causes the dependent variable to switch from one variable to another. This means that the value of the policy may also change discontinuously, which makes gradient-based search difficult.<br /><br />Softmax function : transform from a discontinuous function into differentiable function
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<pre wrap=""><a class="moz-txt-link-freetext" href="http://gridcafe.web.cern.ch/gridcafe/animations/LHCdata/LHCdata.html">http://gridcafe.web.cern.ch/gridcafe/animations/LHCdata/LHCdata.html</a><br /><br /><br />It is an amazing new age of science. It claimed 20 petabyte by<br />annual basis. Large storage and data management practices.<br /><br /></pre>
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<a href='https://ttoulliu2002.blogspot.com/2008/09/ds-6x-instance-configuration.html'>DS 6.x instance configuration</a>
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<div> To configure 3 instances of DS, created on different host, (different IP and the same port) </div><div> under the same domain. With DSEE 6.x, it is possible to create and configure instances on those machines from the Directory Service Control Center (i.e. DSEE 6 Console).</div>
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<a href='https://ttoulliu2002.blogspot.com/2008/09/mobile-data-management-and-mobile-agent.html'>Mobile Data Management and Mobile Agent</a>
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<pre wrap=""> * Data management in wireless networks<br /> * Data management in sensor and mobile ad hoc networks<br /> * Data management in mobile peer-to-peer networks<br /> * Data mining for mobile applications<br /> * Data presentation, scripting and exchange languages<br /> * Data replication, migration and dissemination in mobile environments<br /> * Data stream processing in mobile/sensor networks<br /> * Indexing and query processing for moving objects<br /> * Location and mobility semantics<br /> * Location tracking of vehicles and moving objects<br /> * Metadata management and exchanges<br /> * Mobile access to the Web<br /> * Mobile agents<br /><br /><br />A conference: Mobile Data Mangement (MDM'09): Systems, Services and Middleware </pre>
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<h2 class='date-header'><span>Wednesday, October 24, 2007</span></h2>
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<a href='https://ttoulliu2002.blogspot.com/2007/10/lb-and-ds-fd-overflow.html'>LB and DS FD overflow</a>
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Load Balancer will use tcp_connect to ping downline systems it is protecting, and since this is not a protocol understood by the app, you get that error. It also winds up leaving an orphaned FD <b class="moz-txt-star"><span class="moz-txt-tag">*</span>each<span class="moz-txt-tag">*</span></b> time.<br /><br />If you do find a LB is the source, the solution is to reset the LB to use an acceptable protocol (http for web, ldap for DS, etc.). Most all the LB's have ready-to-use scripted options in their config-options.<br /><br />Although its not a true fix, another option is to reset the idletimeout onthe DS to soemthing like 900/1800s so it can recoup the wasted FD's periodically. This is a fine temporary fix, sometimes cu's leave that situation in that state for years. But the true fix is to re-config the LB to use the proper protocol .
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<a href='https://ttoulliu2002.blogspot.com/2007/10/cron-script-from-open-solaris.html'>cron script from open solaris</a>
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<pre wrap=""><br /></pre><pre wrap=""><span class="moz-txt-citetags"></span>For every command in the script?<br /><span class="moz-txt-citetags"></span><br /><span class="moz-txt-citetags"></span><a class="moz-txt-link-freetext" href="http://cvs.opensolaris.org/source/xref/jds/spec-files/trunk/cron-script.sh">http://cvs.opensolaris.org/source/xref/jds/spec-files/trunk/cron-script.sh</a><span class="moz-txt-citetags"></span><br /><span class="moz-txt-citetags"></span>See if a single command experiment working first<br /><span class="moz-txt-citetags"> </span><br /><span class="moz-txt-citetags">> </span>Where does the redirection go? Inside the quoted command or for zlogin?<br /><span class="moz-txt-citetags">> </span>zlogin -l gbuild big-zone "the_command <span class="moz-txt-citetags">> </span>zlogin -l gbuild big-zone "the_command" </pre>
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<a href='https://ttoulliu2002.blogspot.com/2007/10/ds-db-index-out-of-sync-poor.html'>DS DB index out of sync-poor performance</a>
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<div style="margin: 0px;">DS is observed slower search response time on Solaris 10U3 compared to Windows. The cache size is the same on the two boxes, even though it should be bigger on solaris (windows is 32bit, solaris is 64).<br /></div><div style="margin: 0px; min-height: 14px;"><br /></div><div style="margin: 0px;">This search for example shows different etimes consistently :</div><div style="margin: 0px; min-height: 14px;"><br /></div><div style="margin: 0px;">On Windows the search took 0.079000 seconds :</div><div style="margin: 0px; min-height: 14px;"><br /></div><div style="margin: 0px;">[19/Oct/2007:15:33:41 +0200] conn=2062529 op=1 msgId=2 - SRCH base="ou=qp_na02,ou=apps,ou=internal,o=ericsson" scope=2 filter="(&(objectClass=groupOfUniqueNames)(uniqueMember=UID=XBMVIVI,OU=Partners,OU=External,O=ericsson))" attrs="cn"</div><div style="margin: 0px;">[19/Oct/2007:15:33:42 +0200] conn=2062529 op=1 msgId=2 - RESULT err=0 tag=101 nentries=114 etime=0.079000</div><div style="margin: 0px; min-height: 14px;"><br /></div><div style="margin: 0px;">however this same search took 0.320350 seconds on solaris :</div><div style="margin: 0px; min-height: 14px;"><br /></div><div style="margin: 0px;">[19/Oct/2007:17:02:30 +0200] conn=460 op=1 msgId=2 - SRCH base="ou=qp_na02,ou=apps,ou=internal,o=ericsson" scope=2 filter="(&(objectClass=groupOfUniqueNames)(uniqueMember=UID=XBMVIVI,OU=Partners,OU=External,O=ericsson))" attrs="cn"</div><div style="margin: 0px;">[19/Oct/2007:17:02:30 +0200] conn=460 op=1 msgId=2 - RESULT err=0 tag=101 nentries=114 etime=0.320350</div><div style="margin: 0px; min-height: 14px;"><br /></div><div style="margin: 0px; min-height: 14px;"><br /></div><div style="margin: 0px;">In the solaris errors logs, i see lines like this "candidate <candidate> not found" :</candidate></div><div style="margin: 0px; min-height: 14px;"><br /></div><div style="margin: 0px;">[19/Oct/2007:17:02:30 +0200] - INFORMATION<span class="Apple-converted-space"> </span>- conn=-1 op=-1 msgId=-1 -<span class="Apple-converted-space"> </span>SRCH base="ou=qp_na02,ou=apps,ou=internal,o=ericsson" scope=2 deref=0 sizelimit=0 timelimit=0 attrsonly=0 filter="(&(objectClass=groupOfUniqueNames)(uniqueMember=UID=XBMVIVI,OU=Partners,OU=External,O=ericsson))" attrs="cn"</div><div style="margin: 0px;">[19/Oct/2007:17:02:30 +0200] - INFORMATION<span class="Apple-converted-space"> </span>- conn=-1 op=-1 msgId=-1 -<span class="Apple-converted-space"> </span>mapping tree selected backend : unix</div><div style="margin: 0px;">[19/Oct/2007:17:02:30 +0200] - INFORMATION<span class="Apple-converted-space"> </span>- conn=-1 op=-1 msgId=-1 -<span class="Apple-converted-space"> </span>mapping tree release backend : unix</div><div style="margin: 0px;">[19/Oct/2007:17:02:30 +0200] - INFORMATION<span class="Apple-converted-space"> </span>- conn=-1 op=-1 msgId=-1 -<span class="Apple-converted-space"> </span>mapping tree selected backend : userRoot</div><div style="margin: 0px;">[19/Oct/2007:17:02:30 +0200] - DEBUG<span class="Apple-converted-space"> </span>- conn=-1 op=-1 msgId=-1 - <span class="Apple-converted-space"> </span>be: 'o=ericsson' indextype: "eq" indexmask: 0x2</div><div style="margin: 0px;">[19/Oct/2007:17:02:30 +0200] - DEBUG<span class="Apple-converted-space"> </span>- conn=-1 op=-1 msgId=-1 - <span class="Apple-converted-space"> </span>be: 'o=ericsson' indextype: "eq" indexmask: 0x2</div><div style="margin: 0px;">[19/Oct/2007:17:02:30 +0200] - DEBUG<span class="Apple-converted-space"> </span>- conn=-1 op=-1 msgId=-1 - <span class="Apple-converted-space"> </span>be: 'o=ericsson' indextype: "eq" indexmask: 0x2</div><div style="margin: 0px;">[19/Oct/2007:17:02:30 +0200] - DEBUG<span class="Apple-converted-space"> </span>- conn=-1 op=-1 msgId=-1 - <span class="Apple-converted-space"> </span>be: 'o=ericsson' indextype: "eq" indexmask: 0x2</div><div style="margin: 0px;">[19/Oct/2007:17:02:30 +0200] - DEBUG<span class="Apple-converted-space"> </span>- conn=-1 op=-1 msgId=-1 -<span class="Apple-converted-space"> </span>candidate 306256 not found</div><div style="margin: 0px;">[19/Oct/2007:17:02:30 +0200] - DEBUG<span class="Apple-converted-space"> </span>- conn=-1 op=-1 msgId=-1 -<span class="Apple-converted-space"> </span>candidate 307389 not found</div><div style="margin: 0px;">[19/Oct/2007:17:02:30 +0200] - DEBUG<span class="Apple-converted-space"> </span>- conn=-1 op=-1 msgId=-1 -<span class="Apple-converted-space"> </span>candidate 309528 not found</div><div style="margin: 0px;">[19/Oct/2007:17:02:30 +0200] - DEBUG<span class="Apple-converted-space"> </span>- conn=-1 op=-1 msgId=-1 -<span class="Apple-converted-space"> </span>candidate 309532 not found</div><div style="margin: 0px;">[19/Oct/2007:17:02:30 +0200] - DEBUG<span class="Apple-converted-space"> </span>- conn=-1 op=-1 msgId=-1 -<span class="Apple-converted-space"> </span>candidate 309538 not found</div><div style="margin: 0px;">[19/Oct/2007:17:02:30 +0200] - DEBUG<span class="Apple-converted-space"> </span>- conn=-1 op=-1 msgId=-1 -<span class="Apple-converted-space"> </span>candidate 309542 not found</div><div style="margin: 0px;">[19/Oct/2007:17:02:30 +0200] - DEBUG<span class="Apple-converted-space"> </span>- conn=-1 op=-1 msgId=-1 -<span class="Apple-converted-space"> </span>candidate 309726 not found</div><div style="margin: 0px;">[19/Oct/2007:17:02:30 +0200] - DEBUG<span class="Apple-converted-space"> </span>- conn=-1 op=-1 msgId=-1 -<span class="Apple-converted-space"> </span>candidate 309866 not found</div><div style="margin: 0px;">[19/Oct/2007:17:02:30 +0200] - DEBUG<span class="Apple-converted-space"> </span>- conn=-1 op=-1 msgId=-1 -<span class="Apple-converted-space"> </span>candidate 309877 not found</div><div style="margin: 0px;">[19/Oct/2007:17:02:30 +0200] - DEBUG<span class="Apple-converted-space"> </span>- conn=-1 op=-1 msgId=-1 -<span class="Apple-converted-space"> </span>candidate 309878 not found</div><div style="margin: 0px;">[19/Oct/2007:17:02:30 +0200] - DEBUG<span class="Apple-converted-space"> </span>- conn=-1 op=-1 msgId=-1 -<span class="Apple-converted-space"> </span>candidate 309881 not found</div><div style="margin: 0px;">[19/Oct/2007:17:02:30 +0200] - DEBUG<span class="Apple-converted-space"> </span>- conn=-1 op=-1 msgId=-1 -<span class="Apple-converted-space"> </span>candidate 309898 not found</div><div style="margin: 0px;">[19/Oct/2007:17:02:30 +0200] - INFORMATION<span class="Apple-converted-space"> </span>- conn=-1 op=-1 msgId=-1 -<span class="Apple-converted-space"> </span>mapping tree release backend : userRoot</div><div style="margin: 0px; min-height: 14px;"><br /></div><div style="margin: 0px; min-height: 14px;"><br /></div><div style="margin: 0px;"> it looks like the index is out of sync.</div><div style="margin: 0px; min-height: 14px;"><br /></div>
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<pre wrap="">Using "attach -F" (ie capital F) you can attach a shared storage<br />to a different zone even it is not de-attached with it's original<br />zone, if you previously created the zone configuration via "zonecfg -z <zonename><br />..." like on the original host.<br /><br />Of course you must make sure that only one node is really booting the<br />zone at a time.</zonename></pre>
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<h2 class='date-header'><span>Thursday, October 11, 2007</span></h2>
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(1) install <a href="http://www.scheme.com/petitechezscheme.html">Petite Chez Scheme</a><br />(2) install eopl source code<br />(3) change dir<br /><br />(cd "/home/test/eopl/intercept")<br />(3) init code<br /><br />(load "chez-init.scm")
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<h2 class='date-header'><span>Monday, October 08, 2007</span></h2>
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<a href='https://ttoulliu2002.blogspot.com/2007/10/db-cache-size-for-large-db-on-ds.html'>DB cache size for large DB on DS</a>
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The best results with a maximum of about 50 GB in database cache because of checkpoints. That is a concern here. But response times is over 1 second. It is caused by check pointing, reducing the db cache size may help. A very large db, and not a lot of memory. <br /><br />(1) Set both the entry cache and db cache to 100 mb each offered the best performance - allowing the fs cache to do everything. This was on Solaris 10 with the latest updates for ZFS. <br />(2) modified the file system partitions to force direct io on the ones we didn't want being cached - this way we reserved more of the fs cache for LDAP. <br />(3) Like if your logs are on a separate FS then you can exclude that mount, etc. For the partition/disk that holds the database, set: "noatime" & "logging", and if "/data" is the disk that holds the database, set: tunefs -e 2097152 /data
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