[ILUG] changing times

[John P. Looney]

On Thu, Nov 08, 2001 at 06:21:35PM +0000, John P. Looney mentioned:
> On Thu, Nov 08, 2001 at 06:06:37PM +0000, John P. Looney mentioned:
> > On Thu, Nov 08, 2001 at 05:03:28PM +0000, Dave Neary mentioned:
> > > >  Guess what...there was one.
> > > 
> > > Where? Where? From whom? And does it work properly?
> >  Scan's 5in1 reader. Don't think its got a name etc.
> 
>  In case anyone cares;
> 
> [root at bartender tmp]# sdd -time if=/dev/sda of=/tmp/test
> sdd: Read  64000 records + 0 bytes (total of 32768000 bytes = 32000.00k).
> sdd: Wrote 64000 records + 0 bytes (total of 32768000 bytes = 32000.00k).
> sdd: Total time 39.384sec (812 kBytes/sec)
> [root at bartender tmp]# sdd -time of=/dev/sda if=/tmp/test
> sdd: Read  64000 records + 0 bytes (total of 32768000 bytes = 32000.00k).
> sdd: Wrote 64000 records + 0 bytes (total of 32768000 bytes = 32000.00k).
> sdd: Total time 369.672sec (86 kBytes/sec)
> 
>  Not too bad.

 Actually, Paul poked around with it last night. Give dd a blocksize of
32k or so, and suddenly write speeds pop up to 850k/sec - it's faster
writing than reading!!!

Kate

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John Looney             Chief Scientist
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