Re: Copy time comparison 2.4.20-pre6 <-> 2.4.19+data-logging (was:Compatibility of current 2.4.19.pending ...)

[Oleg Drokin <green@namesys.com>]

Hello!

On Tue, Sep 17, 2002 at 02:49:24AM +0200, Manuel Krause wrote:

> >What tool do you use for backup?
> Hey, Oleg, you should know this; I stayed with my simple but useful 
> scripts using "cp -ax A/. B/" for testing reiserfs performance on this 
> command related to my reiserfs partitions' content. That content is not 

I am just making sure.

> >Also very huge difference is seen when creating holes ;)
> >e.g compare time of seeking to 128Gb and writing one byte between
> >2.4.20-pre7 and 2.4.20-pre6 ;)
> >Code for that was once posted on our mailing list.
> >When you will feel that 2.4.20-pre7 hanged, don't trust that feeling
> >and wait till the end of operation. ;)
> You're kind of joking?! "time <command>" should show the total lack of 
> time related performance, when [throughput] is divided by [time] or 

I must be missing something, but why do you want to divide throughput by time?
throughput is amount of data divided by time.

> not?! I calculated these values manually based upon the timings & df 
> values after copying. Yes, I want to show my personal engagement for the 
> reiserfs community, too.

Hm. Are you sure you are hitting write-speed limit?
May be you are read-speed bounded? Can you please check that?

Thank you.

Bye,
    Oleg