On Sat, Aug 10, 2002 at 06:17:25PM +0200, Daniel Egger wrote:
> Am Sam, 2002-08-10 um 14.12 schrieb Richard Zidlicky:
>
> > seems like you are doing something else, like hitting all
> > of the file.
>
> > # uname -a
> > Linux sirizidl.dialin.rrze.uni-erlangen.de 2.4.18 #27 Wed Jul 24 17:25:39 CEST 2002 m68k unknown
>
> > main()
> > {
> > char *area;
> > int fd=open("/msrc/linux/distr/cd.image", O_RDWR);
> > area = mmap (0, 168088*4096, PROT_READ | PROT_WRITE, MAP_SHARED, fd, 0);
> > if (area == -1) perror("mmap");
> > }
>
> Heh. Well of course I'm also trying to use the memory I mmaped. :)
> It is just that it seems the mmaped region is not really bakked by
> the underlying file but by swap space which was exactly what I
> was trying to avoid by using a file.
still works as expected for me, accessing a 650 MB file with only
about 350 MB swap is no problem. It takes some time on that old
m68k box but clearly dominated by HD read time.. a compilation
runing in the background doesn't seem to make any difference
at all.
Richard
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/
This archive was generated by hypermail 2b29 : Thu Aug 15 2002 - 22:00:23 EST