[lfs-support] Final GCC Compile Weirdness - 1 Time? No, 2 nd Time? Perfect!
tijnema at gmail.com
Mon Jan 9 11:26:42 PST 2012
On Mon, Jan 9, 2012 at 4:57 PM, <jasonpsage at jegas.com> wrote:
> Now, I wouldn't care that much except even running on a DEDICATED 32bit
> Linux (Slackware 13.37) with MAKEFLAGS set to EIGHT to use all CORES...
> it takes a while... So running the procedure twice is time
> consuming.. We're talking hours on a new i7 DELL XPS Studio (Quad Core
> with hyper-threading - its like having EIGHT CPU)
You should know better that hyper-threading is far from having 8 real
cores, you're compile time is probably nearly the same as with
> So - Should I be worried? Does anyone have a clue how that could happen?
> Does Anyone want to see the Script
> that I run TWICE (and it has all the clean up etc and source code
> Any help is always appreciated! Thank You...
Did you read section 4.5 "About SBUs"?. It says that average
compile time is measured depending on how long it took you to compile
the very first package. GCC in chapter 6 (6.17) says: "Approximate
build time: 47 SBU", so if your binutils package took 10 minutes, your
GCC compilation would take about 47*10 = 470 minutes, almost 8 hours.
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