lkml.org 
[lkml]   [2006]   [Feb]   [23]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
From
SubjectRe: Patch to reorder functions in the vmlinux to a defined order


On Thu, 23 Feb 2006, linux-os (Dick Johnson) wrote:
> >
> > Does anybody want to run benchmarks? (Totally untested, may not boot,
> > might physically accost your pets for all I know).
> >
> > Linus
>
> I just reconfigured and rebuilt linux-2.6.15.4 to put PHYSICAL_START
> at 0x00400000, unconditionally and it booted fine and is working so
> a 'boot' shouldn't be a problem.

I ended up doing even more.

For me, running lmbench with this, it seems to improve some things by up
to 20% (pipe bandwidth and latency, small file delete), some other things
by 10% (larger file delete), and others not at all.

Still, that 20% is _huge_.

HOWEVER. I didn't compare very strictly. I should have done many more runs
(I only did three), and more importantly, I should have compared the exact
same kernel (I compared the new results against a kernel that was a couple
of weeks old, so there were other differences). So it's a bit suspect.
Finally, it might depend on the core a lot, and other cores might not get
the same results.

So somebody should do a much better test. I'm too lazy.

Linus
-
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/

\
 
 \ /
  Last update: 2009-11-18 23:46    [W:0.096 / U:0.880 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site