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Measuring the performace of a parallelized kernel compile with warm caches on a 8 way NUMA-Q box. Highmem support is turned OFF so I'm only using the first 1Gb or so of RAM (it's much faster without HIGHMEM). prepare: make -j16 dep; make -j16 bzImage; make mrproper; make -j16 dep; measured: time make -j16 bzImage 2.4.18-pre7 330.06user 99.92system 1:00.35elapsed 712%CPU (0avgtext+0avgdata 0maxresident)k 0inputs+0outputs (411135major+486026minor)pagefaults 0swaps 2.4.18-pre7 with J6 scheduler 307.19user 88.54system 0:57.63elapsed 686%CPU (0avgtext+0avgdata 0maxresident)k 0inputs+0outputs (399255major+484472minor)pagefaults 0swaps Seems to give a significant improvement, not only giving a shorter elapsed time, but also lower CPU load. Martin. - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/ | |||||||||
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