ponderous 'make world' times post GCC 3.3...
tillman at seekingfire.com
Sat Aug 9 17:20:29 PDT 2003
On Sat, Aug 09, 2003 at 04:55:33PM -0700, David O'Brien wrote:
> On Sat, Aug 09, 2003 at 01:40:19AM -0700, Kris Kennaway wrote:
> > This suggests that something might have been pessimized with the gcc
> > 3.3 code generation on sparc. i.e. when gcc 3.3 is built with gcc 3.2
> > (your build 2, which used the installed 3.2 compiler to build the 3.3
> > compiler that was then used for the remainder of the world build), it
> > performs well (your build 2), but when gcc 3.3 is built with gcc 3.3
> > it performs slowly.
> > I wonder if the gcc 3.3 compiler specs were set up incorrectly for
> > sparc.
> I can think of nothing in the sparc MD compiler specs that could account
> for this. Mostly things there are in the "work / doesn't work" category.
Is there some kind of profiling that I could perform during a buildworld
that might be helpful?
Humans hardly ever learn from the experience of others. They learn -
when they do, which isn't often - on their own, the hard way.
- Robert Heinlein
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