On Wed, 2008-11-05 at 08:51 -0500, John Drescher wrote:
> > [root@troll ~]# dd if=/dev/zero of=/dev/nst1 bs=4k count=256k
> > 262144+0 records in
> > 262144+0 records out
> > 1073741824 bytes (1.1 GB) copied, 48.2057 seconds, 22.3 MB/s
> >
> > [root@troll ~]# dd if=/dev/zero of=/dev/nst1 bs=64k count=64k
> > 65536+0 records in
> > 65536+0 records out
> > 4294967296 bytes (4.3 GB) copied, 41.4204 seconds, 104 MB/s
> >
> > [root@troll ~]# dd if=/dev/zero of=/dev/nst1 bs=256k count=16k
> > 16384+0 records in
> > 16384+0 records out
> > 4294967296 bytes (4.3 GB) copied, 34.1308 seconds, 126 MB/s
> >
> > [root@troll ~]# dd if=/dev/zero of=/dev/nst1 bs=1024k count=4k
> > 4096+0 records in
> > 4096+0 records out
> > 4294967296 bytes (4.3 GB) copied, 32.3195 seconds, 133 MB
> >
> > [root@troll ~]# dd if=/dev/zero of=/dev/nst1 bs=4096k count=4k
> > 4096+0 records in
> > 4096+0 records out
> > 17179869184 bytes (17 GB) copied, 119.205 seconds, 144 MB/s
> >
> Was compression off during this test?
> 

tape compression was on

Ulrich
-- 
Ulrich Leodolter <ulrich.leodolter AT obvsg DOT at>
OBVSG


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