James Andrewartha <jam...@daa.com.au> wrote:
> Joerg Schilling wrote:
> > I would be interested to see a open(2) flag that tells the system that I
> > will
> > read a file that I opened exactly once in native oder. This could tell the
> > system to do read ahead and to later mark the pages as immediately
> > reusable.
> > This would make star even faster than it is now.
>
> Are you aware of posix_fadvise(2) and madvise(2)?
I am of course aware of madvise since December 1987 but this is an interface
that does not play nicely with a highly portable program like star.
posix_fadvise seems to be _very_ new for Solaris and even though I am
frequently reading/writing the POSIX standards mailing list, I was not aware of
it.
>From my tests with star, I cannot see a significant performance increase but
>it
may have a 3% effect........
Jörg
--
EMail:jo...@schily.isdn.cs.tu-berlin.de (home) Jörg Schilling D-13353 Berlin
j...@cs.tu-berlin.de (uni)
joerg.schill...@fokus.fraunhofer.de (work) Blog:
http://schily.blogspot.com/
URL: http://cdrecord.berlios.de/private/ ftp://ftp.berlios.de/pub/schily
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