Re: random minor benchmark: Re: Copy 20 tarfiles: ext2 vs (reiser4,unixfile) vs (reiser4,cryptcompress)

[Edward Shishkin]

Jens Axboe wrote:

> On Wed, Jan 25 2006, Hans Reiser wrote:
>  
>
> > Notice how CPU speed (and number of cpus) completely determines
> > compression performance.
> >
> > cryptcompress refers to the reiser4 compression plugin, (unix file)
> > refers to the reiser4 non-compressing plugin.
> >
> > Edward Shishkin wrote:
> >
> >    
> >
> > > Here are the tests that vs asked for:
> > > Creation (dd) of 20 tarfiles (the original 200M file is in ramfs)
> > > Kernel: 2.6.15-mm4 + current git snapshot of reiser4
> > >
> > > ------------------------------------------
> > >
> > > Laputa workstation
> > > Uni Intel Pentium 4 (2.26 GHz) 512M RAM
> > >
> > > ext2:
> > > real 2m, 15s
> > > sys 0m, 14s
> > >
> > > reiser4(unix file)
> > > real 2m, 7s
> > > sys  0m, 23s
> > >
> > > reiser4(cryptcompress, lzo1, 64K)
> > > real 2m, 13s
> > > sys 0m, 11s
> > >      
>
> Just curious - does your crypt plugin reside in user space?
>
>  

Nop.
This is just wrappers for linux crypto api, zlib, etc..
so user time is zero and not interesting.

Edward.



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