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Re: apr_file_copy performance on Win32

From: Will Dean <svn_at_indcomp.co.uk>
Date: 2004-11-02 23:33:36 CET

"Peter N. Lundblad" <peter@famlundblad.se> wrote in message
news:Pine.LNX.4.55.0411022230030.13608@fnapp.local...
>>
> According to the spec:
> blksize_t st_blksize A file-system specific preferred I/O block size for
> this object. ...

I would think that it's quite hard for the OS to express a useful general
'preference' here. It might be assuming that you were going to be doing
lots of fgetc-type access, and think that something like 4096 bytes would be
sensible.

Of course, overwhelmingly the simplest way to get an OS's input on the
subject of file copying is just to call its file copying API and let it deal
with the details. (Though I think that on Win32 there are specific
situations where there are techniques which are faster than CopyFile.)

Will

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Received on Tue Nov 2 23:34:00 2004

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