gmirror

[Vladimir Dzhivsanoff]

On 5/14/05, Pawel Jakub Dawidek <pjd at freebsd.org> wrote:
> On Sat, May 14, 2005 at 05:57:51PM +0400, Vladimir Dzhivsanoff wrote:
> +> > This is the way RAID1 works. Try to imagine how disk's heads are moving
> -
> +> > there will be no speed-up in sequential reads, this is not RAID0.
> +> > 
> +> > Mirror characteristics are:
> +> > - the same speed for sequential reads as for one disk;
> +> > - the same speed for sequential/random write as for one disk;
> +> > - double speed of one disk for random reads;
> +> by what test-suite I can test it ?
> +> and what balance algorithm is more proper for random reads ?
> 
> There is my tool in ports (benchmarks/raidtest/) which does what you want.
> The README file wasn't moved to ports, IIRC, you can find it here:
> 
big thanks, Pawel 


> 	http://www.freebsd.org/cgi/cvsweb.cgi/src/tools/tools/raidtest/Attic/README?rev=1.2&content-type=text/x-cvsweb-markup&hideattic=0
> 
> -- 
> Pawel Jakub Dawidek                       http://www.wheel.pl
> pjd at FreeBSD.org                           http://www.FreeBSD.org
> FreeBSD committer                         Am I Evil? Yes, I Am!
> 
>