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On Sat, 2003-07-26 at 05:56, Håvard Wall wrote: |
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> information. An estimate could primarly be based on some "major" |
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> factors; perhaps cpu-type and clock frequency. Then, if enough |
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> statistics is available for the current architecture, on other settings |
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> as well, sucb as -O flags and size of main memory (MAKEOPTS?). A kind of |
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> hierarchical estimate... Could perhaps be hard to implement in practice |
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> though (?). |
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To be anywhere near the correct answer you would need to know: |
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- CPU type |
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- CPU speed |
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- Number of CPUs |
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- MAKEOPTS |
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- USE flags |
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- Some of the CFLAGS, particularly -march and -O |
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You would also have to cancel out any data gotten from a machine with |
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distcc or ccache enabled, since those will throw your accuracy way off. |
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For example, I have a P166MMX machine running Gentoo on 32MB of RAM. It |
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runs fine. How is it setup? Simple, I have it setup for distcc with |
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MAKEOPTS=-j4 and DISTCC_HOSTS="smpbox1/2 smpbox2/2 othermachine". It |
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pretty much never does any compiling locally. It can compile |
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applications almost as fast as working with one of my SMP machines. The |
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data would be completely off on this machine if it were to be submitted. |
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-- |
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Chris Gianelloni |
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Developer, Gentoo Linux |
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-- |
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gentoo-dev@g.o mailing list |
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