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Optimizing KDE 3.1.x

Posted by timothy on from the wringin-out-seconds dept.

David Lechnyr writes "This article goes into detail on optimizing KDE for speed. Typically, most distributions include pre-compiled binaries of KDE which are optimized for an Intel i386 computer. Chances are that you're running something faster than this; if so, this should help you tweak the compile process to speed things up a bit."

2 of 83 comments (clear)

  1. mandatory gentoo user post... by dotgod · · Score: 5, Informative

    Gentoo does all this by default. To compile and install optimized binaries for kde, you just type "emerge kde"

  2. Re:portage ? by larry+bagina · · Score: 5, Informative
    it's not about "experimental optimizations", it's about beling able to select instructions optimized for your CPU.

    the difference between a 386, 486, and pentium I-IV isn't just clockspeed and MMX, a handful of new instructions have been added. If you don't specify the arcitecture, you'll generate i386 compatable code.

    so if (i == 0) i = 1234; will generate code like this:
    cmp eax,0
    jne L1
    mov eax, 1234
    L1:

    A PII however, can do this:
    cmp eax,0
    cmove eax,1234

    that might not look all that much better, but branches are a huge bubble in the pipeline, and are horrible for performance.

    --
    Do you even lift?

    These aren't the 'roids you're looking for.