On Sat, 22 Oct 2005 19:41, Paolo Ciarrocchi wrote:
> On 10/22/05, Con Kolivas <[email protected]> wrote:
> > On Sat, 22 Oct 2005 11:20, Con Kolivas wrote:
> > > Testing has confirmed much larger prefetch values work well.
> >
> > Bah.. Sorry take this one instead. Just make sure that no matter how
> > little ram we have prefetch is enabled.
>
> Con,
> would you be so kind to post more information about the test you've done ?
My concern was to not cause a detriment to performance in any noticeable way.
The prefetch sizes were tested on a number of machines with different speed
hard drive / ram size combinations to ensure none of the default values ever
caused any significant I/O wait, or that heavy memory requiring compiles took
any longer to complete as these constantly need new ram allocations and I
wanted to ensure that prefetching into ram didn't slow down those
allocations. Furthermore, the time taken to actually prefetch the application
is now more than 5 times faster because of the larger default prefetch
values.
Cheers,
Con
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to [email protected]
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/
[Index of Archives]
[Kernel Newbies]
[Netfilter]
[Bugtraq]
[Photo]
[Stuff]
[Gimp]
[Yosemite News]
[MIPS Linux]
[ARM Linux]
[Linux Security]
[Linux RAID]
[Video 4 Linux]
[Linux for the blind]
[Linux Resources]
