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Re: gcc 3.3 garbage collector defaults
- From: Benjamin Kosnik <bkoz at redhat dot com>
- To: Andi Kleen <ak at suse dot de>
- Cc: zack at codesourcery dot com, gcc at gcc dot gnu dot org, libstdc++ at gcc dot gnu dot org
- Date: Mon, 27 Jan 2003 13:01:29 -0600
- Subject: Re: gcc 3.3 garbage collector defaults
- References: <20030127102539.5e4ce5f6.bkoz@redhat.com><20030127164753.GA5986@wotan.suse.de><873cnebkhr.fsf@egil.codesourcery.com><20030127170014.GA14134@wotan.suse.de><20030127123451.30d7e3e9.bkoz@redhat.com><20030127184913.GA14162@wotan.suse.de>
time make
248.736u 26.373s 4:59.60 91.8% 0+0k 0+0io 503943pf+0w
time make CXXFLAGS="--param ggc-min-heapsize=8192"
214.521u 27.306s 4:10.44 96.5% 0+0k 0+0io 512759pf+0w
time make CXXFLAGS="--param ggc-min-heapsize=16384 --param ggc-min-expand=50"
193.816u 30.121s 3:49.56 97.5% 0+0k 0+0io 524642pf+0w
Erp. So, with these flags I can save a minute each recompile. C++
compiles on templatized code end up being 25% faster.
Aaaaaaaaaaghh!!!!!! Why aren't these flags documented!!!! Why aren't
the defaults sane???
-benjamin