So, what’s new in the CLR 2.0 GC?

re: So, what’s new in the CLR 2.0 GC?

mswanson — Tue, 04 Oct 2005 09:55:39 GMT

Awesome information. For those who want to view the actual PDC presentation, you might want to track the status of the PDC05 post-show DVD set: http://blogs.msdn.com/mswanson/archive/2005/10/03/476702.aspx. Maoni's FUN421 presentation will be included there in its entirety.

re: So, what’s new in the CLR 2.0 GC?

sgontov — Tue, 04 Oct 2005 18:03:38 GMT

Many thanks for your post PDC article. I missed last third of your presentation in PDC during rush to airport. This article together with slides helps me to add missing peaces.

Question about Disposing Managed Object Manually

Ramachandran — Fri, 10 Nov 2006 14:58:13 GMT

Hi,

Garbage Collection for Managed objects happen either automatically or forced by GC. Collect. Many people recommend that "don't use GC.Collect that will bring down the performance of our app".

My Question is, Is there any way to collect the Managed object immediately after use without using GC.Collect?

I am asking this because i have a managed object that contains very very important Private Key. I dont like to keep that for a long time and also i dont like to call GC.Collect because that will slow down my app.How can i achieve my objective?

regards

Ramachandran

re: So, what’s new in the CLR 2.0 GC?

maoni — Sat, 11 Nov 2006 02:14:35 GMT

Ramachandran, have you looked at the SecureString class? It was designed specifically for the usage you described.

re: So, what’s new in the CLR 2.0 GC?

Ramachandran — Tue, 14 Nov 2006 11:53:00 GMT

Maoni,

Thanks. I found securestring as really useful feature. but we already designed some components in which we are using object to store secret keys[designed in 1.1]. so if there is a way to collect/erase the managed object immediately that will be really useful.

Thanks for your immediate reply

Ramachandran

re: So, what’s new in the CLR 2.0 GC?

maoni — Tue, 21 Nov 2006 00:45:50 GMT

Ramachandran, then you'll need to implement a Clear method that clears the sensitive content yourself...

re: So, what’s new in the CLR 2.0 GC?

Wouter — Fri, 01 Dec 2006 12:35:13 GMT

Are the slides still available somewhere?

re: So, what’s new in the CLR 2.0 GC?

maoni — Sat, 02 Dec 2006 00:35:36 GMT

Yes, I can't seem to open them in IE but I can save it from http://216.55.183.13/pdc2005/slides/FUN421_Stephens.ppt

re: So, what’s new in the CLR 2.0 GC?

John Grandy — Sat, 23 Jun 2007 03:32:07 GMT

I can not access the slides in any manner. Would be really helpful to understand the material if I could take a look at them.

More CLR Internal, Debugging, Etc reading material

roy ashbrook — Wed, 18 Jul 2007 10:49:16 GMT

I'm done with most of these, but not totally. Tons of great information! Here are some more great

re: So, what’s new in the CLR 2.0 GC?

Prince Devasitham — Wed, 08 Aug 2007 10:01:12 GMT

Hi Maoni,

First of all thanks for the wonderful blog, a lot of information on Gargbage Collection internals.

I have a question.

you have told that Gen0 & Gen1 has to be in the same Ephemeral segment. Assume we have a box with single processor then there would be only one heap available for the process. Is it valid to assume that Gen1 and Gen 0 together will not be more than 16MB at any point of time in execution of the process.

pls valide my assumption and give you comments.

Thanks in advance for you time on this query.

Prince C Devasitham

re: So, what’s new in the CLR 2.0 GC?

Prince Devasitham — Wed, 08 Aug 2007 20:48:23 GMT

Hi Maoni,

you have shared you PDC Slides but i am unable to download the like is not valid.

Prince C Devasitham

re: So, what’s new in the CLR 2.0 GC?

maoni — Thu, 09 Aug 2007 00:35:43 GMT

Mr. Devasitham, your assumption is correct assuming you are not using server GC and your app runs on a 32-bit OS. HOWEVER, you should NOT make ANY dependency on this because it could change. You should never make any dependency on managed heap segment size, period.

The slides indeed seem not be there anymore. I'll have to find out what's going with this.

re: So, what’s new in the CLR 2.0 GC?

Can you share your pdc 2005 slides please — Mon, 13 Aug 2007 09:49:06 GMT

Hi Maoni,

Can you share your PDC Slides, i am very interested in viewing the slides as there are pointer to it in your blog.

If it is not possible to share the slides due to resource constraint. Can you please mail to my e-address prince.devasitham@gmail.com

Thanks in advance

Prince C Devasitham

re: So, what’s new in the CLR 2.0 GC?

Nikhil — Thu, 15 May 2008 12:38:46 GMT

Hi Maoni,

Really usefull n sencetive information,

Thanks a lot,

Well I too require slides for better understanding,

if u dont mind, can u please mail it to me on

shameless_nik@hotmail.com,

Thanks in advance

re: So, what’s new in the CLR 2.0 GC?

puneet — Sun, 30 Nov 2008 23:04:53 GMT

Hi Maoni,

This is great in-depth information.

Can you please publish this slides(existing link is broken)

Thanks

re: So, what’s new in the CLR 2.0 GC?

er — Wed, 21 Oct 2009 20:37:49 GMT

Hi Maoni,

Great article.

I have question regarding the demotion. When executing the following code:

int[] a = new int[1000];

while (true)

{

Console.WriteLine("gen " + GC.GetGeneration(a));

GC.Collect();

System.Threading.Thread.Sleep(100);

}

-- a is not pinned, however the output looks like this:

gen 0

gen 1

gen 2

gen 0

-- how come the object demoted to 0?