On Sun, 2004-05-09 at 08:39, Warren Togami wrote: > Will Cohen wrote: > > I work on performance tools at Red Hat. I have been told there is > > interest in tuning the desktop to improve performance. I have a number > > of questions to help identify the work needed in this area. I would be > > interested in any answers that people have for the following questions. > > > On a somewhat related topic of desktop performance, recently fedora.us > Extras has begun experimenting with -Os rather than the standard -O2 > optimization for our firefox & thunderbird packages. So far it seems to > be working very well, with noticably smaller binary RPMS and runtime > memory footprint of these two very large applications. I asked gcc > developers if they had a guess about which -O2 and -Os would be "faster" > for large applications like firefox & thunderbird. They generally > replied that they have no idea, because compiler optimization is an > inexact science. All kinds of other factors come into play like smaller > memory footprint (less swapping), smaller code size (maybe better use of > CPU cache). > > Have there been any past discussions about changing the standard > compiler optimization for perhaps FC3? Well, I think you've described a wonderful project that someone could do ... recompile the desktop packages with -Os and do some timing. That's the only way we'd know whether we should change the optimization flags or not. Regards, Owen
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