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Old 11-13-2006, 01:21 PM   #1
Registered: Aug 2005
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Distribution: Slackware, RHEL
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slackbuild question

Sorry if this has been answered before, but I couldn't find my answer using the search feature. Anyway, here it goes...I'm build a few packages using a provided slackbuild script. I have changed a few things in the script to optimize the package. Here is my question, in the O2 flag section, should I leave it as O2 or O3? What is the difference between the both of them? Thanks for the replies!!
Old 11-13-2006, 02:20 PM   #2
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Distribution: Caldera, CTOS, Debian, FreeBSD, Mac OS X, Mandrake, Minix, OpenBSD, Slackware, SuSE
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I suggest O2. Here's a good discussion about it:


"The choice: Summarised

-O2 smaller binary, faster to load from disk, less RAM usage, better cache usage in systems with moderate cpu cache, higher reliability;

-O3 slight to moderate speed increase for some applications, higher memory (RAM, cache and disk) usage, longer load times from disk, very occasional problems with compilation; expect less than 1% improvement in *overall* execution speed."


"Options That Control Optimization"
Old 11-13-2006, 02:24 PM   #3
Registered: Aug 2005
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Distribution: Slackware, RHEL
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Thanks!!! Just what I was looking for!!


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