Comments for Genesis http://www.genesis.uk.com/wordpress Service Provisioning Tue, 12 Jul 2011 18:41:38 +0000 hourly 1 http://wordpress.org/?v=3.2.1 Comment on The Information Exchange – A universal mechanism to finance and drive innovation in the free market by Paul demetri http://www.genesis.uk.com/wordpress/archives/1119#comment-106 Paul demetri Tue, 12 Jul 2011 18:41:38 +0000 http://www.genesis.uk.com/wordpress/?p=1119#comment-106 Hoos, really enjoyed reading your blog. I think your idea has a lot of potential. Finding a way to apply the knowledge and expertise developed in the financial sector to other disciplines is a laudable goal, not least because I think the last 10 to 15 years have seen a brain drainge from the sciences to fincial services. An Information Exchange such as you describe would be a wonderful way to pay back the 'intellectual' debt owed society. Hoos, really enjoyed reading your blog. I think your idea has a lot of potential. Finding a way to apply the knowledge and expertise developed in the financial sector to other disciplines is a laudable goal, not least because I think the last 10 to 15 years have seen a brain drainge from the sciences to fincial services. An Information Exchange such as you describe would be a wonderful way to pay back the ‘intellectual’ debt owed society.

]]> Comment on WebLogic Server Debug Environment Variables by husseinb http://www.genesis.uk.com/wordpress/archives/621#comment-105 husseinb Fri, 08 Jul 2011 02:08:43 +0000 http://www.genesis.uk.com/?p=621#comment-105 Hello Karin, not sure to be honest although I do remember seeing a BEA document that had the mappings of which you speak. That was a long time ago though. I'm sure this is the sort of question Oracle support can help you with. If you don't have any luck let me know and I'll ask some of my Oracle engineering colleagues if they can help. Hello Karin, not sure to be honest although I do remember seeing a BEA document that had the mappings of which you speak. That was a long time ago though. I’m sure this is the sort of question Oracle support can help you with. If you don’t have any luck let me know and I’ll ask some of my Oracle engineering colleagues if they can help.

]]> Comment on WebLogic Server Debug Environment Variables by KarinFromMunich http://www.genesis.uk.com/wordpress/archives/621#comment-104 KarinFromMunich Tue, 05 Jul 2011 10:09:27 +0000 http://www.genesis.uk.com/?p=621#comment-104 Hi, thanks a lot for the collection. Do you perhaps have a clue, where to find a crossreference between these debug flags and the naming in the console debug options. Unfortunately I am not for all the tea in China able to get these parameters taken as -D options. I am already playing around with it more than a day. So to get on, I'd like to give it a try directly via console. However, I can't find out what to set for weblogic.kernel.debug. Any idea? Thanks a lot in advance. Karin. Hi,

thanks a lot for the collection. Do you perhaps have a clue, where to find a crossreference between these debug flags and the naming in the console debug options. Unfortunately I am not for all the tea in China able to get these parameters taken as -D options. I am already playing around with it more than a day. So to get on, I’d like to give it a try directly via console. However, I can’t find out what to set for weblogic.kernel.debug. Any idea?

Thanks a lot in advance.
Karin.

]]> Comment on One size fits all GC by admin http://www.genesis.uk.com/wordpress/archives/928#comment-80 admin Sat, 28 Nov 2009 11:28:12 +0000 http://www.genesis.uk.com/wordpress/?p=928#comment-80 Brad, you should really be posting this question to the newsgroups, see my latest blog entry! Anyway the options I have provide don’t all apply to JRocket VM. My understanding is that JRocket stores class related data on the heap and thus the does not have any need for perm memory. Just drop the perm memory options for JRocket. Posted by: hoos on September 26, 2006 at 1:50 PM Brad, you should really be posting this question to the newsgroups, see my latest blog entry!

Anyway the options I have provide don’t all apply to JRocket VM. My understanding is that JRocket stores class related data on the heap and thus the does not have any need for perm memory. Just drop the perm memory options for JRocket.

Posted by: hoos on September 26, 2006 at 1:50 PM

]]> Comment on One size fits all GC by admin http://www.genesis.uk.com/wordpress/archives/928#comment-79 admin Sat, 28 Nov 2009 11:27:53 +0000 http://www.genesis.uk.com/wordpress/?p=928#comment-79 I am attempting to have Sun Application Server run on top of JRockit and have the following issue: In the Domain.xml I have: -server -Xms1g -Xmx1g -XX:NewRatio=4 -XX:PermSize=128m -XX:MaxPermSize=128m But in the Server.log I get: [WARN ] ‘-XX:NewRatio=4′ is not a valid VM option. Ignoring. [WARN ] ‘-XX:PermSize=128m’ is not a valid VM option. Ignoring. [WARN ] ‘-XX:MaxPermSize=128m’ is not a valid VM option. Ignoring. Any thoughts as to why the options are not valid? Thanks, Brad Posted by: BBakerAtNGC on September 26, 2006 at 11:59 AM I am attempting to have Sun Application Server run on top of JRockit and have the following issue:
In the Domain.xml I have:
-server
-Xms1g
-Xmx1g
-XX:NewRatio=4
-XX:PermSize=128m
-XX:MaxPermSize=128m

But in the Server.log I get:
[WARN ] ‘-XX:NewRatio=4′ is not a valid VM option. Ignoring.
[WARN ] ‘-XX:PermSize=128m’ is not a valid VM option. Ignoring.
[WARN ] ‘-XX:MaxPermSize=128m’ is not a valid VM option. Ignoring.

Any thoughts as to why the options are not valid?

Thanks,
Brad

Posted by: BBakerAtNGC on September 26, 2006 at 11:59 AM

]]> Comment on One size fits all GC by admin http://www.genesis.uk.com/wordpress/archives/928#comment-78 admin Sat, 28 Nov 2009 11:27:36 +0000 http://www.genesis.uk.com/wordpress/?p=928#comment-78 I am trying to setup visualgc to connect to weblogic (8.12). How can i dtermine the prot and JVMid? Posted by: haseebtoor001 on August 30, 2006 at 1:40 AM I am trying to setup visualgc to connect to weblogic (8.12). How can i dtermine the prot and JVMid?

Posted by: haseebtoor001 on August 30, 2006 at 1:40 AM

]]> Comment on One size fits all GC by admin http://www.genesis.uk.com/wordpress/archives/928#comment-77 admin Sat, 28 Nov 2009 11:27:23 +0000 http://www.genesis.uk.com/wordpress/?p=928#comment-77 Hello Jon, I think in most cases it’s wise to avoid larger heap sizes even if new GC implementations can handle them for two reasons. 1. A large heap full of small objects that have short life spans (probably the most common scenario) will mean that it takes a longer for the GC thread(s) to determine which objects to mark for GC. As a result any gains you may have from less collections due to your large heap may be lost. I’m sure that there are some GC algorithms and implementations that this rule does not apply to (it would be great if someone could comment on this with a few links) but in most cases it holds true. 2. Instead of having a large heap why not have a second instance of WLS running instead. In the majority of cases this appraoch will be more beneficial. I think I read that in the BEA administrators documentation and from my own experience it makes sense. Posted by: hoos on October 7, 2005 at 1:53 PM Hello Jon,

I think in most cases it’s wise to avoid larger heap sizes even if new GC implementations can handle them for two reasons.

1. A large heap full of small objects that have short life spans (probably the most common scenario) will mean that it takes a longer for the GC thread(s) to determine which objects to mark for GC. As a result any gains you may have from less collections due to your large heap may be lost. I’m sure that there are some GC algorithms and implementations that this rule does not apply to (it would be great if someone could comment on this with a few links) but in most cases it holds true.
2. Instead of having a large heap why not have a second instance of WLS running instead. In the majority of cases this appraoch will be more beneficial. I think I read that in the BEA administrators documentation and from my own experience it makes sense.

Posted by: hoos on October 7, 2005 at 1:53 PM

]]> Comment on One size fits all GC by admin http://www.genesis.uk.com/wordpress/archives/928#comment-76 admin Sat, 28 Nov 2009 11:27:13 +0000 http://www.genesis.uk.com/wordpress/?p=928#comment-76 Is that 1.5 limit really real? I heard that ages ago – does it still apply? Posted by: jonmountjoy on October 7, 2005 at 11:39 AM Is that 1.5 limit really real? I heard that ages ago – does it still apply?

Posted by: jonmountjoy on October 7, 2005 at 11:39 AM

]]> Comment on One size fits all GC by admin http://www.genesis.uk.com/wordpress/archives/928#comment-75 admin Sat, 28 Nov 2009 11:27:01 +0000 http://www.genesis.uk.com/wordpress/?p=928#comment-75 Thanks Bill, as soon as I get a chance to test out the new features I publish the results here. Posted by: hoos on October 7, 2005 at 11:13 AM Thanks Bill, as soon as I get a chance to test out the new features I publish the results here.

Posted by: hoos on October 7, 2005 at 11:13 AM

]]> Comment on One size fits all GC by admin http://www.genesis.uk.com/wordpress/archives/928#comment-74 admin Sat, 28 Nov 2009 11:26:51 +0000 http://www.genesis.uk.com/wordpress/?p=928#comment-74 This is a great article. You will have to update this when the new deterministic GC features come out. Posted by: wgroth2 on October 7, 2005 at 6:50 AM This is a great article. You will have to update this when the new deterministic GC features come out.

Posted by: wgroth2 on October 7, 2005 at 6:50 AM

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