Cygwin64 vs. Cygwin (speed)

[Jim Reisert AD1C]

In another thread, I wrote (and Corinna replied):

>> I have tried 64-bit Cygwin in the past.  I do a lot of file I/O and
>> sorting/searching on largish test-based data sets, and 64-bit was
>> noticeably slower than 32-bit Cygwin,
>
> Hmm, I usually have the opposite impression...

I'm using malloc/calloc, is there a different memory allocator I
should be using for Cygwin64?

Thanks - Jim

-- 
Jim Reisert AD1C, , http://www.ad1c.us

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Re: Cygwin64 vs. Cygwin (speed)

[Corinna Vinschen]

On Nov  3 07:59, Jim Reisert AD1C wrote:
> In another thread, I wrote (and Corinna replied):
> 
> >> I have tried 64-bit Cygwin in the past.  I do a lot of file I/O and
> >> sorting/searching on largish test-based data sets, and 64-bit was
> >> noticeably slower than 32-bit Cygwin,
> >
> > Hmm, I usually have the opposite impression...
> 
> I'm using malloc/calloc, is there a different memory allocator I
> should be using for Cygwin64?

There is none.  While Cygwin's malloc is slow in multi-threading
scenarios due to dumb locking (which I really hope to fix at one point),
it shouldn't be any slower on 64 bit compared to 32 bit.


Corinna

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Corinna Vinschen  Please, send mails regarding Cygwin to
Cygwin Maintainer cygwin AT cygwin DOT com
Red Hat


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