I used Alt-F2 to switch to another VT, loaded the list of all USE flags, and for each one, either put the flag, or disabled it, based on how I intended to use the server. I would suggest you do the same, rather than trying to rely on others to tell you what you do or do not need. Then, if you aren't sure what a particular flag does because the description is too vague or brief, then ask a specific question about that flag. Then, you are likely to get a useful answer. :)
As for your compile flags, I also took a detailed route... I read the manpage for GCC and looked at what flags are available. I ended up with '-Os' coupled with a bunch of other flags that made it somewhere between -O2 and -O3, but not really. If you want to play it 'safe' then I would choose either O2 or Os for global settings, and then analyze what applications are taking up enough of your CPU time that you feel you need to make them go faster. For example, my server needs ImageMagick to be as fast as it possibly can be... Then, you can experiment with benchmarks and different flags to improve those 'bottlenecks' of performance.
Your kernel is one obvious place to experiment with. Figure out what operations (like file I/O) that your server will have to perform the most, and then try different flags and do comparative benchmarks.
Or you could just settle for the work that the GCC developers did, choose -O2 as 'good enough' (which it probably is), and only mess with it if you really NEED it.
From: Ben Munat <[EMAIL PROTECTED]> Reply-To: [EMAIL PROTECTED] To: [EMAIL PROTECTED] Subject: [gentoo-user] server use-flags Date: Sat, 10 Jan 2004 14:45:37 -0800
First, apologies for (sort of) re-sending a thread, but I realized that asking about the best packages to install for a web server was jumping the gun a bit. I need to set my USE flags and update my system first.
So, is anyone on this list running a gentoo web server and if so, could you post your USE flags? Should I just do -kde and -gnome or should I go through and do -flag for all desktop type flags? Will doing -X make -gnome and -kde unecessary? Also, I was figuring that setting CFLAG="-02 -march=pentium4 -pipe" would be a nice safe setting. Anything I should do differently there?
thnks,
b
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