Messages in this thread | | | Date | Thu, 10 Jul 2003 00:13:28 -0700 | From | Andrew Morton <> | Subject | Re: benchmark: 2.5 io test regression? |
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Diego Calleja García <diegocg@teleline.es> wrote: > > Hi. I just went to my 2.5 kernel source tree and i did > > #time grep foo * -r > > in both 2.4 & 2.5
Me too.
ext2. 2.5 kernels had HZ=100, so we can meaningfully compare system and user times between 2.4 and 2.5.
2.4.22-pre4-SMP: 0.15s user 0.71s system 9% cpu 8.888 total 0.07s user 0.69s system 11% cpu 6.658 total 0.14s user 0.56s system 11% cpu 6.212 total 0.18s user 0.60s system 11% cpu 6.944 total
Average: 0.64 7.18
2.5.74-mm3-SMP: 0.10s user 0.58s system 11% cpu 6.060 total 0.08s user 0.54s system 10% cpu 6.009 total 0.13s user 0.55s system 11% cpu 6.085 total 0.11s user 0.49s system 10% cpu 5.858 total
Average: 0.54 6.00
2.4.22-pre4-UP: 0.11s user 0.60s system 10% cpu 6.733 total 0.22s user 0.60s system 12% cpu 6.683 total 0.12s user 0.58s system 8% cpu 8.408 total 0.17s user 0.65s system 8% cpu 9.544 total
Average: 0.61 7.84
2.5.74-mm3-UP: 0.11s user 0.45s system 7% cpu 7.431 total 0.19s user 0.46s system 10% cpu 6.354 total 0.19s user 0.51s system 8% cpu 8.197 total 0.09s user 0.59s system 9% cpu 6.842 total
Average: 0.50 7.21
Modest but nice improvements in both system time and elapsed time.
I suspect that more than four runs was needed, really. - 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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