5.3-Beta1: So far, so goo. Day 5.
keramida at ceid.upatras.gr
Thu Aug 26 13:34:55 PDT 2004
On 2004-08-25 17:07, Gary Kline <kline at tao.thought.org> wrote:
> But Q1: how exactly, does one get rid of the debugging stuff?
You can disable most of the debugging stuff with:
# /bin/rm -fr /etc/malloc.conf
# ln -s ajr /etc/malloc.conf
and then commenting our or deleting the following options from your
kernel config file:
makeoptions DEBUG=-g # Build kernel with gdb(1) debug symbols
options KDB # Enable kernel debugger support.
options DDB # Support DDB.
options GDB # Support remote GDB.
options INVARIANTS # Enable calls of extra sanity checking
options INVARIANT_SUPPORT # Extra sanity checks of internal structures, required by INVARIANTS
options WITNESS # Enable checks to detect deadlocks and cycles
options WITNESS_SKIPSPIN # Don't run witness on spinlocks for speed
Disabling all of these is certainly going to yield a faster system.
> And Q2, now that we've got gcc-3.4, would it help to use a higher
> opyimization? say, "-O3"? ....
I'm not sure if the speed gain is significant and worth the risk.
I still use the same make.conf settings, shown below:
NO_CPU_CFLAGS= true # Don't add -march=<cpu> to CFLAGS automatically
NO_CPU_COPTFLAGS=true # Don't add -march=<cpu> to COPTFLAGS automatically
and I have commented out the CFLAGS and COPTFLAGS, the same way I did a
year ago and two years ago, etc.
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