Re: [reiserfs-list] reiserfs patch for 2.4.0-prerelease (dbench runs)

[Ed Tomlinson]

Hi,

I ran a few more benchmarks on 2.4.0 final with 3.6.24.  The results were a 
little susprising (all on the same box, just after boot, no X):

	MB/s	user	system	cpu	time
3.6.24	 7.1	54.0	177,6	25%	14:57.5
3.6.24	14.5	53.2	152.4	47%	 7:15.7
3.6.24	 5.6	55.6	191.0	22%	18:36.4

reiserfs can do well, but notice how the system cpu seconds varies...
I am not seeing such wild differences in ext2 runs, impling that they
are due to something in reiserfs?

Ed Tomlinson

On Thursday 04 January 2001 20:41, Ed Tomlinson wrote:
> Hi,
>
> I have been doing some dbench runs with the original and latest (Jan 4
> 22:xx) prerelease.diff kernels.  Looks like both the latest kernels and the
> reiserfs patch both are costing some performance.
>
> prerelease
> 	MB/s	user	system	cpu	time
> ext2	14.6	50.5s	 76.4s	29%	 7:14.9m
> ext2	12.6	50.9s 	 76.7s	25%	 8:23.6m
>
> reiser	14.5	53.8s	149.2s	46%	 7:16.1m
> reiser	10.7	54.1s	154.5s	35%	 9:49.9m
>
> prerelease (2.4.0 jan 4 22:xx)
> 	MB/s	user	system	cpu	time
> ext2	10.5	52.8s	 81.5s	22%	10:02.3m
>
> reiser	 5.8	54.6s	198.5s	23%	18:12.5m
> reiser	 6.4	55.1s	188.7s	24%	16.19.3m
>
> Using the notail reiserfs mount option improves the reiserfs numbers 10-20%
> with both kernels.
>
> All benchmarks run on a K6-III 400 with 128M just after boot with no X
> running.
>
> Comments?
> Ed Tomlinson