Re: [BENCHMARK] gcc3.2 v 2.95.3 (contest and linux-2.5.38)

Robert Love
2002-09-23T03:05:18Z

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