2.5.74-bk6-44 is with the patch applied
2.5.74-bk6-44-on is with the patch applied and 4/4 config option.
2.5.74-bk6-44-hi is with the patch applied and with highpte instead.
Overhead of 4/4 isn't much higher, and is much more generally useful.
Kernbench: (make -j vmlinux, maximal tasks)
Elapsed System User CPU
2.5.74 46.11 115.86 571.77 1491.50
2.5.74-bk6-44 45.92 115.71 570.35 1494.75
2.5.74-bk6-44-on 48.11 134.51 583.88 1491.75
2.5.74-bk6-44-hi 47.06 131.13 570.79 1491.50
SDET 128 (see disclaimer)
Throughput Std. Dev
2.5.74 100.0% 0.1%
2.5.74-bk6-44 100.3% 0.7%
2.5.74-bk6-44-on 92.1% 0.2%
2.5.74-bk6-44-hi 94.5% 0.1%
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