Re: [BLACKBOX] Illegal Memory Access with Windows 7 - Update

From: [at]} <Wojtek>
Date: Fri, 16 Aug 2013 22:50:18 -0400

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Chris:

> In a word - fragmentation. There might be more than 250MByte of *total*
> memory available in the system but not 250Mbyte of *contiguous* memory (as
> needed by an array) at that time. It depends on how efficiently the
> garbage collector is cleaning up.

I am not sure why the memory has to be contiguous under kernel that runs
with virtual memory management? Is it not the task of the virtual memory
to make physical memory look contiguous no matter what?

Assuming that the fragmentation is the culprit, some questions are:

(a) Ban BB inquire the system about the fragmentation status?
(b) If the status predicts failure, can BB ask the system to clean up?
(c) What is going on in Robert's machine that the largest contiguous chunk
is 1/2 the size on some other machines?
(d) How to fix Robert's machine?

> I don't know whether it is true or not but I heard rumours that at one
> time Microsoft had about 300 people working on the development
> of the .NET garbage collector. It certainly is very sophisticated.

I recall that one person designed and implemented the original Ceres
collector. Perhaps Microsoft should hire that one person? (Just kidding.
He would start from scratch.)

W.

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Received on Sat Aug 17 2013 - 04:50:18 UTC