Messages in this thread | | | Date | Fri, 24 Jan 2003 18:26:48 -0800 | From | Larry McVoy <> | Subject | Re: your mail |
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> For the record, I finally got to try my own page coloring patch on a 1GHz > Athlon Thunderbird system with 256kB L2 cache. With the present patch, my > own number crunching benchmarks and a kernel compile don't show any benefit > at all, and lmbench is completely unchanged except for the mmap latency, > which is slightly worse. Hardly a compelling case for PCs!
If it works correctly then the variability in lat_ctx should go away. Try this
for p in 2 4 8 12 16 24 32 64 do for size in 0 2 4 8 16 do for i in 1 2 3 4 5 6 7 8 9 0 do lat_ctx -s$size $p done done done
on both the with and without kernel. The page coloring should make the numbers rock steady, without it, they will bounce a lot. -- --- Larry McVoy lm at bitmover.com http://www.bitmover.com/lm - 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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