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SubjectRe: percpu-2.5.63-bk5-1 (properly generated)
At some point in the past, I wrote:
>>> Tested, boots, and runs on NUMA-Q. Trims 6s of 41s off kernel compiles.

On Sun, Mar 02, 2003 at 10:24:37AM -0800, Martin J. Bligh wrote:
> Odd. I get nothing like that difference.
> Kernbench-2: (make -j N vmlinux, where N = 2 x num_cpus)
> Elapsed User System CPU
> 2.5.63-mjb2 44.43 557.16 95.31 1467.83
> 2.5.63-mjb2-pernode 44.21 556.92 95.16 1474.33
> Kernbench-16: (make -j N vmlinux, where N = 16 x num_cpus)
> Elapsed User System CPU
> 2.5.63-mjb2 45.39 560.26 117.25 1492.33
> 2.5.63-mjb2-pernode 44.78 560.24 112.20 1501.17
> No difference for make -j32, definite improvement in the systime for -j256.

Maybe your machine's running slow?
AFAIK the machines we're using are identical, and mine sees:

make -j bzImage > /dev/null 317.70s user 148.43s system 1295% cpu 35.984 total
(yes, this is 5 off of 41s, apparently 1s measurement variations are typical)

make -j36 bzImage > /dev/null 302.33s user 115.02s system 1284% cpu 32.492 total
make -j38 bzImage > /dev/null 302.52s user 117.06s system 1300% cpu 32.258 total
make -j40 bzImage > /dev/null 303.53s user 117.42s system 1305% cpu 32.251 total
make -j44 bzImage > /dev/null 304.02s user 122.14s system 1299% cpu 32.792 total

Check MTRR's etc.?


-- wli
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