Messages in this thread | | | Date | Mon, 25 Jun 2001 11:16:57 +0200 | From | Matthias Andree <> | Subject | Re: GCC3.0 Produce REALLY slower code! |
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On Mon, 25 Jun 2001, Alexander V. Bilichenko wrote:
> Hello All! > Some tests that I have recently check out. > kernel compiled with 3.0 (2.4.5) function call: 1000000 iteration. 3% slower > than 2.95. > test example - hash table add/remove - 4% slower (compiled both > with -O2 -march=i686). > Why have this version been released?
Because it comes with various other improvements, among them better error detection, better C++ support, integrated GCJ (but regretfully still without Ada 95), to name a few reasons.
3% to 4% loss in a first release of a new major release is not a big deal, although I found similar results on leafnode's texpire. However, 3% do not warrant me spending my time complaining. Maybe some optimization is missing, maybe other operations than the ones you checked are faster. So there.
You might run an entire benchmark suite and report back, tough. :-) - 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/
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