Guy Harris wrote:
Jeff Morriss wrote:
Has anyone else noticed that packet-parlay.c (in plugins/giop/) takes
a _very_ long time to compile? I recently upgraded from Fedora Core 4
to Fedora Core 5 and now it takes around 10 minutes to compile it (on
my 1.6 GHz Pentium 4); I seriously thought the compiler was hung it
was taking so long...
Of course I have no clue how long it used to take and I don't have an
(easy) way to test this on other versions or platforms at the
moment--is anyone else seeing anything like this?
Not quite that bad, but it does take a significant amount of time to
compile on OS X 10.4.6 (1.5 GHz PPC G4). (Did the FC4 -> FC5 upgrade
either GCC or the GCC options? The compiler might be doing more
aggressive optimization.)
It looks like I (should have had) gcc 4.0.2 (+ whatever Redhat patches)
and now I have 4.1.0 .
http://gcc.gnu.org/gcc-4.1/changes.html
has a rather large section on optimization improvements, so I suspect
that may be the difference...
I don't particularly feel like struggling with downgrading my compiler,
but here are various compile times using gcc-4.1 on my system:
Without optimization:
real 0m17.812s
user 0m16.125s
sys 0m0.836s
-O1:
real 8m28.577s
user 8m12.139s
sys 0m1.852s
-O2:
real 9m50.071s
user 9m39.720s
sys 0m2.604s
-O3:
real 2m43.235s
user 2m31.161s
sys 0m3.008s
I'm a little shocked by the jump from -O0 to -O1 and am puzzled by the
-O3 result. I guess one of the (new?) optimizations is left out in -O3?
Seems odd...