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On Wednesday 12 May 2004 07:48, Josh Glover wrote: |
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> Quoth Kevin (Wed 2004-05-12 07:24:07AM -0400): |
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> > |
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> > Have you turned off hyperthreading? Why is it that only two CPUs |
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> > show up? It looks like (flags include ht) the CPUs support |
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> > hyperthreading... or am I way off base in drawing that conclusion |
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> > here? |
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> |
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> No, the only part where you went off base was in assuming that I have |
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> more than one *physical* CPU in the box. I have one, and with |
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> hyperthreading turned on, it looks like two to the kernel. |
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Oh.... Well, that seems like an important difference between yours and my |
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arrangements. Are you running Gentoo on a box with more than one |
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physical CPU? I had no problems running Gentoo on this box until after |
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installing a second CPU. That's when the weirdness started. |
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Is anyone here running Gentoo on a dual-physical CPU machine? What |
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compiler flags are you using? |
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> > > I dunno, why don't you post your CFLAGS and MAKEOPTS from your |
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> > > make.conf here? |
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> > |
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> > Did already :) |
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> |
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> Lost them in the spew, sorry. |
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> |
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> > Here they are again: |
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> > |
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> > ACCEPT_KEYWORDS="x86" |
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> |
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> This is unnecessary. You only need to use ACCEPT_KEYWORDS with the |
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> unstable keywords, ~x86 in your case. |
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Ok. Thanks. |
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> |
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> > CFLAGS="-O3 -march=pentium4 -pipe -fomit-frame-pointer" |
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> |
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> Might want to back off to -O2, at least when you compile the kernel if |
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> nothing else. I believe the handbook recommends -O2, and optimising too |
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> highly can lead to some pretty bizarre problems. |
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K. What CFLAGS are you using? (on both your single physical CPU box you |
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described above and with any multiple physical CPU boxes) |
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> |
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> > CXXFLAGS="-O3 -march=pentium4 |
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> |
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> I am not sure if you are setting this, or if this is just emerge, but |
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> you usually want to set CXXFLAGS="${CFLAGS}". |
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I'll hafta look at that (well, I can't anymore). I thought I did have |
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CXXFLAGS=${CFLAGS}". |
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> |
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> > FEATURES="autoaddcvs ccache distcc sandbox" |
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Huh. That's odd. When I installed distcc, I changed the FEATURES as |
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indicated in the docs to list distcc, but I didn't add any of those |
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others. Wonder where they came from... |
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> |
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> autoaddcvs is a feature only for developers, you should not turn it on. |
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K. |
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> |
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> > MAKEOPTS="-j3" |
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> |
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> You have four CPUs, so set this to -j5. |
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I was thinking "number of physical CPUs + 1" here, but ok. |
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> |
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> > Thanks again for the thoughtful reply, Josh. |
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> |
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> Hey, I live to serve. :) |
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:) Thanks. |
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-- |
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-Kevin |
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-- |
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