Re: [PATCH] Radix-tree pagecache for 2.5

From: rwhron@earthlink.net
Date: Sun Feb 03 2002 - 22:59:05 EST


On Mon, Feb 04, 2002 at 01:33:19AM +0200, Momchil Velikov wrote:
> Hmm, I've got different results with bonnie++, are you sure you didn't
> swap the results :)

I don't think so, but I notice that bonnie++ Sequential and Random Create
tests flucuate a lot. These are on 16384 small files in my tests.

                ------Sequential Create------ --------Random Create--------
                -Create-- --Read--- -Delete-- -Create-- --Read--- -Delete--
          files /sec %CP /sec %CP /sec %CP /sec %CP /sec %CP /sec %CP
2.4.17 16 4217 97 +++++ +++ 4664 99 4354 99 +++++ +++ 4090 95
             16 4423 99 +++++ +++ 4266 90 4404 95 +++++ +++ 4382 100
             16 4468 97 +++++ +++ 4899 99 4522 99 +++++ +++ 4235 95
             16 4498 96 +++++ +++ 4777 100 4464 99 +++++ +++ 3854 90
             16 4503 95 +++++ +++ 4990 99 4632 98 +++++ +++ 4058 90

2.4.17rat 16 2994 98 +++++ +++ 4548 94 2952 99 +++++ +++ 3967 92
             16 3055 97 +++++ +++ 4705 93 4665 99 +++++ +++ 4119 94
             16 4463 96 +++++ +++ 4670 100 4452 100 +++++ +++ 3775 94
             16 4833 99 +++++ +++ 4823 100 4616 97 +++++ +++ 4054 92
             16 4521 98 +++++ +++ 3907 88 4329 95 +++++ +++ 4111 100

The test against a 1GB (large) file vary somewhat too, but not as much as
the tests above. The results I posted earlier were the averages from 5 runs.

I just uploaded the raw logfiles from my testing (not just 2.4.17 and radix-tree)
to http://home.earthlink.net/~rwhron/kernel (the tar.bz2 files are the logs).

-- 
Randy Hron

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