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	<title>Comments on: Second Life Havok4 Beta Preview (2007-10-31) Simulator and Database Refresh starting at 5:00 PDT</title>
	<atom:link href="http://blog.secondlife.com/2007/10/31/second-life-havok4-beta-preview-2007-10-31-simulator-and-database-refresh-starting-at-500-pdt/feed/" rel="self" type="application/rss+xml" />
	<link>http://blog.secondlife.com/2007/10/31/second-life-havok4-beta-preview-2007-10-31-simulator-and-database-refresh-starting-at-500-pdt/</link>
	<description>By Linden Lab</description>
	<pubDate>Sun, 20 Jul 2008 19:53:38 +0000</pubDate>
	<generator>http://wordpress.org/?v=MU</generator>
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		<title>By: Sidewinder Linden</title>
		<link>http://blog.secondlife.com/2007/10/31/second-life-havok4-beta-preview-2007-10-31-simulator-and-database-refresh-starting-at-500-pdt/#comment-503026</link>
		<dc:creator>Sidewinder Linden</dc:creator>
		<pubDate>Thu, 01 Nov 2007 18:52:40 +0000</pubDate>
		<guid isPermaLink="false">http://blog.secondlife.com/2007/10/31/second-life-havok4-beta-preview-2007-10-31-simulator-and-database-refresh-starting-at-500-pdt/#comment-503026</guid>
		<description>@25 Krista  
"mySql, good grief no wonder we have scalability and reliability problems.

Has it every occurred to you that a more robust solution might bring some stability and performance benefits. Have you looked at using Oracle for instance."

For what it's worth, Krista, we are quite aware of other database options, and of the impact of database engines on scalability and reliability. The issues of scalability and reliability are being addressed with architecture changes that are already in motion (not completed yet, but already progressing), and frankly whether the back-end database is mySQL or Oracle or some other database engine has little to do with the effectiveness of changes that need to happen to improve on those two key areas in the Second Life environment. It is always tempting to think "if only we replace this one piece of hardware or software it will all be better", but in the large systems arena this is rarely the case. 

Let's please leave the mySQL discussion alone please, or I will start to remove iff-topic posts, as continuing this part of the discussion is way off topic for the Havok4 beta test process.</description>
		<content:encoded><![CDATA[<p>@25 Krista<br />
&#8220;mySql, good grief no wonder we have scalability and reliability problems.</p>
<p>Has it every occurred to you that a more robust solution might bring some stability and performance benefits. Have you looked at using Oracle for instance.&#8221;</p>
<p>For what it&#8217;s worth, Krista, we are quite aware of other database options, and of the impact of database engines on scalability and reliability. The issues of scalability and reliability are being addressed with architecture changes that are already in motion (not completed yet, but already progressing), and frankly whether the back-end database is mySQL or Oracle or some other database engine has little to do with the effectiveness of changes that need to happen to improve on those two key areas in the Second Life environment. It is always tempting to think &#8220;if only we replace this one piece of hardware or software it will all be better&#8221;, but in the large systems arena this is rarely the case. </p>
<p>Let&#8217;s please leave the mySQL discussion alone please, or I will start to remove iff-topic posts, as continuing this part of the discussion is way off topic for the Havok4 beta test process.</p>
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		<title>By: Sidewinder Linden</title>
		<link>http://blog.secondlife.com/2007/10/31/second-life-havok4-beta-preview-2007-10-31-simulator-and-database-refresh-starting-at-500-pdt/#comment-503018</link>
		<dc:creator>Sidewinder Linden</dc:creator>
		<pubDate>Thu, 01 Nov 2007 18:46:07 +0000</pubDate>
		<guid isPermaLink="false">http://blog.secondlife.com/2007/10/31/second-life-havok4-beta-preview-2007-10-31-simulator-and-database-refresh-starting-at-500-pdt/#comment-503018</guid>
		<description>@27Farallon and 19 Gwyneth
Farallon - Gwyneth is throwing stuff out that we (and I) never claimed about Havok4. This is, as the blog posts and wiki clearly states, about stability and capacity, not raw performance improvements. The new sim design will handle far more load without falling over or crashing, but the raw single-user througput is not higher. For what it's worth, most of the simulator hosts on the Beta Preview are Class 4 machines. To my knowledge none of them are Class 5 hosts yet. 

We are purposefully *not* adding features, other than revamped linkability rules, to this release, and instead working to have this be hard to crash and support existing content with minimal breakage. 

Regards,

Sidewinder</description>
		<content:encoded><![CDATA[<p>@27Farallon and 19 Gwyneth<br />
Farallon - Gwyneth is throwing stuff out that we (and I) never claimed about Havok4. This is, as the blog posts and wiki clearly states, about stability and capacity, not raw performance improvements. The new sim design will handle far more load without falling over or crashing, but the raw single-user througput is not higher. For what it&#8217;s worth, most of the simulator hosts on the Beta Preview are Class 4 machines. To my knowledge none of them are Class 5 hosts yet. </p>
<p>We are purposefully *not* adding features, other than revamped linkability rules, to this release, and instead working to have this be hard to crash and support existing content with minimal breakage. </p>
<p>Regards,</p>
<p>Sidewinder</p>
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		<title>By: Farallon Greyskin</title>
		<link>http://blog.secondlife.com/2007/10/31/second-life-havok4-beta-preview-2007-10-31-simulator-and-database-refresh-starting-at-500-pdt/#comment-503006</link>
		<dc:creator>Farallon Greyskin</dc:creator>
		<pubDate>Thu, 01 Nov 2007 18:20:38 +0000</pubDate>
		<guid isPermaLink="false">http://blog.secondlife.com/2007/10/31/second-life-havok4-beta-preview-2007-10-31-simulator-and-database-refresh-starting-at-500-pdt/#comment-503006</guid>
		<description>#19

My testing has shown me that this is not true AT ALL.

In fact unless the Havok beta grid is running on Class 3 machines Im finding it to be the same or much SLOWER in some instances that Havok 1 on my own sim.

While Havok 4 may be less crash prone is has not shown me that it is any less CPU intensive. A simple 11 object collision in a small slace STILL slowns the sim down to 0.3 TD.

I can't find even one instance of my own experience in the beta grid that would support a single thing you said in your post. Things like 7000 prim link limits or &#62; 30-40 meter link limits are certainly NOT going to be raised on realase, even if they might be in some far off future date. The limits that are there now are more because of limits in the archetecture of the mechanics of sim crossing which are not changing.

What you are talking about may be things that happen some years from now, but defintaly NOT with the upcomng release of Havok 4...</description>
		<content:encoded><![CDATA[<p>#19</p>
<p>My testing has shown me that this is not true AT ALL.</p>
<p>In fact unless the Havok beta grid is running on Class 3 machines Im finding it to be the same or much SLOWER in some instances that Havok 1 on my own sim.</p>
<p>While Havok 4 may be less crash prone is has not shown me that it is any less CPU intensive. A simple 11 object collision in a small slace STILL slowns the sim down to 0.3 TD.</p>
<p>I can&#8217;t find even one instance of my own experience in the beta grid that would support a single thing you said in your post. Things like 7000 prim link limits or &gt; 30-40 meter link limits are certainly NOT going to be raised on realase, even if they might be in some far off future date. The limits that are there now are more because of limits in the archetecture of the mechanics of sim crossing which are not changing.</p>
<p>What you are talking about may be things that happen some years from now, but defintaly NOT with the upcomng release of Havok 4&#8230;</p>
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		<title>By: Sidewinder Linden</title>
		<link>http://blog.secondlife.com/2007/10/31/second-life-havok4-beta-preview-2007-10-31-simulator-and-database-refresh-starting-at-500-pdt/#comment-502970</link>
		<dc:creator>Sidewinder Linden</dc:creator>
		<pubDate>Thu, 01 Nov 2007 17:16:47 +0000</pubDate>
		<guid isPermaLink="false">http://blog.secondlife.com/2007/10/31/second-life-havok4-beta-preview-2007-10-31-simulator-and-database-refresh-starting-at-500-pdt/#comment-502970</guid>
		<description>@23 Bay:  "I don’t get this really..
This is Havoc4 beta.. v 1.18.3.70780..
Then you have the RC, which is NOT a release candidate suddenly, and the version number is 1.18.4.1.
Then there is the nowadays poofed First Look viewer..
At times the Beta viewer has a much lower version number than the released viewer, which makes me confused at least."

Hi Bay,

I'll try to make this clearer...  We have a production viewer - the released one that is the main download on the Second Life web site. We also at some times have a "First Look", which is a beta of an upcoming public release. It is not release yet, and is still being worked on. Project such as our Havok4 project sync up to the *released* viewer code every couple of weeks to pick up changes. We purposefully do not sync to unreleased beta code so that we are not chasing unresolved bugs in the non-released viewer codeline. Does this help?

Thanks for asking,

Sidewinder</description>
		<content:encoded><![CDATA[<p>@23 Bay:  &#8220;I don’t get this really..<br />
This is Havoc4 beta.. v 1.18.3.70780..<br />
Then you have the RC, which is NOT a release candidate suddenly, and the version number is 1.18.4.1.<br />
Then there is the nowadays poofed First Look viewer..<br />
At times the Beta viewer has a much lower version number than the released viewer, which makes me confused at least.&#8221;</p>
<p>Hi Bay,</p>
<p>I&#8217;ll try to make this clearer&#8230;  We have a production viewer - the released one that is the main download on the Second Life web site. We also at some times have a &#8220;First Look&#8221;, which is a beta of an upcoming public release. It is not release yet, and is still being worked on. Project such as our Havok4 project sync up to the *released* viewer code every couple of weeks to pick up changes. We purposefully do not sync to unreleased beta code so that we are not chasing unresolved bugs in the non-released viewer codeline. Does this help?</p>
<p>Thanks for asking,</p>
<p>Sidewinder</p>
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		<title>By: Krista Chaffe</title>
		<link>http://blog.secondlife.com/2007/10/31/second-life-havok4-beta-preview-2007-10-31-simulator-and-database-refresh-starting-at-500-pdt/#comment-502938</link>
		<dc:creator>Krista Chaffe</dc:creator>
		<pubDate>Thu, 01 Nov 2007 16:28:02 +0000</pubDate>
		<guid isPermaLink="false">http://blog.secondlife.com/2007/10/31/second-life-havok4-beta-preview-2007-10-31-simulator-and-database-refresh-starting-at-500-pdt/#comment-502938</guid>
		<description>mySql, good grief no wonder we have scalability and reliability problems. 

Has it every occurred to you that a more robust solution might bring some stability and performance benefits. Have you looked at using Oracle for instance.</description>
		<content:encoded><![CDATA[<p>mySql, good grief no wonder we have scalability and reliability problems. </p>
<p>Has it every occurred to you that a more robust solution might bring some stability and performance benefits. Have you looked at using Oracle for instance.</p>
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		<title>By: elissa bristol</title>
		<link>http://blog.secondlife.com/2007/10/31/second-life-havok4-beta-preview-2007-10-31-simulator-and-database-refresh-starting-at-500-pdt/#comment-502902</link>
		<dc:creator>elissa bristol</dc:creator>
		<pubDate>Thu, 01 Nov 2007 15:41:26 +0000</pubDate>
		<guid isPermaLink="false">http://blog.secondlife.com/2007/10/31/second-life-havok4-beta-preview-2007-10-31-simulator-and-database-refresh-starting-at-500-pdt/#comment-502902</guid>
		<description>I just use the client they tell me to use.  I've never had problems with inventory loss or "lag" that is that bad.  The Lindens are doing a wonderful job.</description>
		<content:encoded><![CDATA[<p>I just use the client they tell me to use.  I&#8217;ve never had problems with inventory loss or &#8220;lag&#8221; that is that bad.  The Lindens are doing a wonderful job.</p>
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		<title>By: Bay Shiras</title>
		<link>http://blog.secondlife.com/2007/10/31/second-life-havok4-beta-preview-2007-10-31-simulator-and-database-refresh-starting-at-500-pdt/#comment-502891</link>
		<dc:creator>Bay Shiras</dc:creator>
		<pubDate>Thu, 01 Nov 2007 15:20:10 +0000</pubDate>
		<guid isPermaLink="false">http://blog.secondlife.com/2007/10/31/second-life-havok4-beta-preview-2007-10-31-simulator-and-database-refresh-starting-at-500-pdt/#comment-502891</guid>
		<description>I don't get this really..
This is Havoc4 beta.. v 1.18.3.70780..
Then you have the RC, which is NOT a release candidate suddenly, and the version number is 1.18.4.1. 
Then there is the nowadays poofed First Look viewer..
At times the Beta viewer has a much lower version number than the released viewer, which makes me confused at least.

I think it's wonderful that we are allowed to test new features, and can do so in both Beta and Main grid, but i think it's a good idea to make things less confusing :)

Keep up the good work¨tho</description>
		<content:encoded><![CDATA[<p>I don&#8217;t get this really..<br />
This is Havoc4 beta.. v 1.18.3.70780..<br />
Then you have the RC, which is NOT a release candidate suddenly, and the version number is 1.18.4.1.<br />
Then there is the nowadays poofed First Look viewer..<br />
At times the Beta viewer has a much lower version number than the released viewer, which makes me confused at least.</p>
<p>I think it&#8217;s wonderful that we are allowed to test new features, and can do so in both Beta and Main grid, but i think it&#8217;s a good idea to make things less confusing <img src='http://s.wordpress.com/wp-includes/images/smilies/icon_smile.gif' alt=':)' class='wp-smiley' /> </p>
<p>Keep up the good work¨tho</p>
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		<title>By: Ron Crimson</title>
		<link>http://blog.secondlife.com/2007/10/31/second-life-havok4-beta-preview-2007-10-31-simulator-and-database-refresh-starting-at-500-pdt/#comment-502773</link>
		<dc:creator>Ron Crimson</dc:creator>
		<pubDate>Thu, 01 Nov 2007 12:51:41 +0000</pubDate>
		<guid isPermaLink="false">http://blog.secondlife.com/2007/10/31/second-life-havok4-beta-preview-2007-10-31-simulator-and-database-refresh-starting-at-500-pdt/#comment-502773</guid>
		<description>@20:


Pfffpppbbttllrrrttffftttttt.</description>
		<content:encoded><![CDATA[<p>@20:</p>
<p>Pfffpppbbttllrrrttffftttttt.</p>
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		<title>By: BraadWorst Barth</title>
		<link>http://blog.secondlife.com/2007/10/31/second-life-havok4-beta-preview-2007-10-31-simulator-and-database-refresh-starting-at-500-pdt/#comment-502770</link>
		<dc:creator>BraadWorst Barth</dc:creator>
		<pubDate>Thu, 01 Nov 2007 12:50:05 +0000</pubDate>
		<guid isPermaLink="false">http://blog.secondlife.com/2007/10/31/second-life-havok4-beta-preview-2007-10-31-simulator-and-database-refresh-starting-at-500-pdt/#comment-502770</guid>
		<description>awsome, that there is also something being done to the database.
i hope this will "fix" inventory loss, instead of making it even worse.

i havent had it  that bad, but some friends had it pretty bad, and lost thousand of items in a sudden.

people pay for their objects, and inventory loss makes them lose it, and no refund, and filing a ticket, takes ages, probably a year or something.

@ 19  Gwyneth Llewelyn
you cant link 7000 prims, it still holds the 254 prim link limit.</description>
		<content:encoded><![CDATA[<p>awsome, that there is also something being done to the database.<br />
i hope this will &#8220;fix&#8221; inventory loss, instead of making it even worse.</p>
<p>i havent had it  that bad, but some friends had it pretty bad, and lost thousand of items in a sudden.</p>
<p>people pay for their objects, and inventory loss makes them lose it, and no refund, and filing a ticket, takes ages, probably a year or something.</p>
<p>@ 19  Gwyneth Llewelyn<br />
you cant link 7000 prims, it still holds the 254 prim link limit.</p>
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		<title>By: HolyHell Cassell</title>
		<link>http://blog.secondlife.com/2007/10/31/second-life-havok4-beta-preview-2007-10-31-simulator-and-database-refresh-starting-at-500-pdt/#comment-502733</link>
		<dc:creator>HolyHell Cassell</dc:creator>
		<pubDate>Thu, 01 Nov 2007 12:16:25 +0000</pubDate>
		<guid isPermaLink="false">http://blog.secondlife.com/2007/10/31/second-life-havok4-beta-preview-2007-10-31-simulator-and-database-refresh-starting-at-500-pdt/#comment-502733</guid>
		<description>Then, They will update it, and break the whole thing.</description>
		<content:encoded><![CDATA[<p>Then, They will update it, and break the whole thing.</p>
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