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March 2009 - Posts

Tuesday, March 31, 2009 10:42 AM

NETCF: Total Bytes in Use After GC – Perf counter

At least one of our customers were a bit confused with the .NET Compact Framework performance counter “Total Bytes in Use After GC” which is described as “ The number of bytes of memory, native and managed, in use after the last garbage collection. ”.
Posted by abhinaba | 0 Comments
Monday, March 30, 2009 10:42 AM

How many heaps does the .NET Compact framework use

While discussing the memory architecture with an internal customer, he inquired about how many heaps .NETCF creates. I’m not sure how it might be helpful to users, but the answer is 5. This has been touched upon in some blogs and presentations (e.g. MEDC
Posted by abhinaba | 0 Comments
Friday, March 27, 2009 10:42 AM

.NET Compact Framework and ARM FPU

  One of our customers was porting an application on to .NETCF from native code and observed that on ARM v7 the floating point performance of .NET CF was way below that of native code. The reason behind this is that native code targets the Floating
Posted by abhinaba | 6 Comments
Thursday, March 26, 2009 9:42 PM

Random GC fun

A friend came by and asked “ Dude, are you free ”. I replied back cautiously “ Why? Are you the Garbage Collector? ”. I do not even implement a finalizer and hence wouldn’t even get some extra time standing in the finalizer queue. So I’m not taking any
Posted by abhinaba | 2 Comments
Tuesday, March 24, 2009 10:42 AM

Dangers of large object heap

Andrew Hunter has an interesting post on the issues with large object heap on the desktop CLR. Visit http://www.simple-talk.com/dotnet/.net-framework/the-dangers-of-the-large-object-heap/ Side Note: .NET Compact Framework doesn’t support large object
Posted by abhinaba | 0 Comments
Monday, March 23, 2009 10:42 AM

.NET Compact framework GC Quantum

In my post When does the .NET Compact Framework Garbage Collector run I mentioned that one of the causes for starting a garbage collection is that 1 MB of data has been allocated from the last garbage collection. Essentially we keep a counter which is
Posted by abhinaba | 4 Comments
Wednesday, March 04, 2009 10:42 AM

Small Basic

Today my father in law started teaching my 4 year old daughter how to write in Bengali which is her native language. Below is the screen shot of her attempt to write অ আ ই , the first character is written by her teacher and the rest by her. This got me
Posted by abhinaba | 3 Comments
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Tuesday, March 03, 2009 10:42 AM

Back To Basics: How does the GC find object references

This post is Part 9 in the series of posts on Garbage Collection (GC). Please see the index here. Most garbage collection algorithms needs to know all other objects referenced by a given object to correctly traverse object hierarchy. All of reference
Posted by abhinaba | 4 Comments
Monday, March 02, 2009 10:42 AM

Back To Basics: Generational Garbage Collection

This post is Part 8 in the series of posts on Garbage Collection (GC). Please see the index here. One of the primary disadvantage discussed in the post on mark-sweep garbage collection is that it introduces very large system pauses when the entire heap
Posted by abhinaba | 5 Comments
 
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