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

Robert Love
2002-09-23T03:42:36Z

On Sun, 2002-09-22 at 23:41, Andrew Morton wrote:

> Try gcc-2.91.66. It might break the 45 second mark.
>
> > IO Full Load:
> > Kernel Time CPU
> > 2.5.38 170.21 42%
> > 2.5.38-gcc32 1405.25 8%
>
> The streaming write is stalling gcc's read for long enough for gcc's
> working set to be evicted. And the working set cannot be reestablished
> because the streaming write prevents it. Meltdown.
>
> I have fixed this. Hang around.

Ehh, I was under the impression he was benchmarking kernels compiled
WITH these compilers, using contest?

Your post seems to imply he was using the compilers as the benchmark.
If so, I retract my previous post - I know gcc 3.x is slow as puke. I
think, however, he is comparing the resulting kernels, in which case
there is a serious issue at hand...

Robert Love