I have personally found that using mmap is less intense on the overall
system performance then the open/fopen alternatives. This is particularly
true if you are doing random I/O (seeking back and forth). Sadly, OS
portability is a bit of an issue, which may impact your development plans.
- Marc
On Wed, 9 Feb 2000, tom r wrote:
>
> Please excuse a "not necessarily linux" question, but who wants to share
> opinions/experience on the virtues of mmap ing a file as opposed to opening it
> ? I'm about to start work on a project where the local custom is to mmap input
> files and I'm not so sure that's a good idea (the files and 100s of meg). Are
> page faults really that much faster than reads ?
>
> TIA
>
> TomR
>
>
>
>
> --
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