Total Commander

sergeycentral · Junior Member Joined: 23 Jul 2003 Posts: 34 Location: USA

What are the benefits of having total commander in 64-bit?

Specifically to the application, not just general 64-bit benefits (extended memory, etc).

Which functions should we expect to see a performance enhancement in?

internal zip packer?
encoding / decoding files?
creating / verifying checksums?

ts4242 · Posted: Wed Dec 14, 2011 11:13 pm Post subject:

Ghisler wrote here

sergeycentral · Junior Member Joined: 23 Jul 2003 Posts: 34 Location: USA

humm that's what I thought. the biggest advantage 64 bit has is memory, and total commander sits around 20 megs. i wish those hours hadn't been spent on 64-bit support then...

tho programs like 7zip 64-bit is way faster than 32 bit. so in the internal packer business, TC could be faster...

MVV · Posted: Wed Dec 14, 2011 11:59 pm Post subject:

TC is a file manager. Performance of file management operations is limited by disk speed rather than CPU/memory speed so there is no difference between 32/64 bit here. The only place where such difference may be are plugins that use a lot of memory or CPU power... but can't remember such ones.
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sergeycentral · Junior Member Joined: 23 Jul 2003 Posts: 34 Location: USA

Privet, kak dela? I forgot TC was a file manager... some file operations like zip packing can be greatly improved. esp. if the algorithm is as complex as 7zip...

-edit-
but i dont see why the time had been spent on 64-bit support when things such as automatic hot fix update could have been worth investigating...

ghisler(Author) · Posted: Thu Dec 15, 2011 9:55 am Post subject:

There are no big benefits, but you can now compare really big files (several GBytes), e.g. large log files or so.
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norfie² · Power Member Joined: 10 Feb 2006 Posts: 632

IMHO the most important benefit is getting a 64-bit-native file manager without any confusing and misleading virtualizations. This is IMHO neither small nor "no big".

ghisler(Author) · Posted: Fri Dec 16, 2011 3:34 am Post subject:

32-bit is NOT virtualized on 64-bit Windows! That's the great thing about AMD64 (which was later adapted by Intel): It can run 32-bit and 64-bit programs natively in parallel, something which other 64-bit processors like Intel Itanium can't do.
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Flint · Posted: Fri Dec 16, 2011 5:10 am Post subject:

ghisler(Author) · Posted: Fri Dec 16, 2011 5:22 am Post subject:

Hmm, are you sure? The libraries are there in both 32-bit and 64-bit form. I assume that the user level code is handled entirely in these 32-bit libraries, while the calls to kernel mode of course call to the 64-bit drivers.
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Flint · Posted: Fri Dec 16, 2011 5:48 am Post subject:

ghisler(Author)
I don't know the internal details of this mechanism, did not read much about them yet, but undoubtedly the system calls are performed in 64-bit mode since the kernel is 64-bit only, so this transformation has to be performed in user-mode level. As far as I can see, all 32-bit processes have several 64-bit DLLs loaded into their address space, including ntdll.dll and wow64.dll; judging from the name, the latter should be responsible for substituting different file system and registry paths.

But, actually, it's all just a matter of terms. I suppose this mechanism (whatever its internal implementation might be) can be treated as a layer between the application and operation system which performs all necessary substitutions, even if there is no such layer from the point of view of code organization. Besides, Microsoft chose the term "file system and registry virtualization" and now uses it across the MSDN and other technical resources, so I think we can stick to the same term without fear of being not understood.
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norfie² · Power Member Joined: 10 Feb 2006 Posts: 632

paraglider · Junior Member Joined: 07 May 2009 Posts: 13

You should read:

http://msdn.microsoft.com/en-us/library/aa384249%28v=VS.85%29.aspx