lkml.org 
[lkml]   [2002]   [Sep]   [22]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
SubjectRe: [BENCHMARK] gcc3.2 v 2.95.3 (contest and linux-2.5.38)
From
Date
On Sun, 2002-09-22 at 23:04, Con Kolivas wrote:

> IO Full Load:
> Kernel Time CPU
> 2.5.38 170.21 42%
> 2.5.38-gcc32 1405.25 8%

Ugh?? Something is _seriously_ messed up here.

The CPU utilization is only 8% but the time is nearly 10x worse. You
sure the only difference was the compiler? I could think gcc-3.2 makes
some poorer choices wrt code optimization, but nothing feasible can come
to mind that would produce such terrible results.

Also, I believe RedHat is compiling their kernel in 8.0 with gcc-3.2,
unless they reintroduced kgcc. Surely that are not seeing these abysmal
numbers.

Robert Love

-
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: 2005-03-22 13:29    [W:0.141 / U:0.088 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site