FreeBSD and poor ata performance

[fandino]

Kenneth Culver wrote:

>> but then why does read/write tests over raw devices performs so bad?
>> AFAIK on raw devices not filesystem, journaling, caches, etc are 
>> involved.
>> _______________________________________________
> 
> 
> Like I said before, you might not have been testing the throughput of 
> the disks,
> instead you may have been testing the throughput of /dev/zero.

I woluld like to have the throughput of /dev/zero on my disks. :-)


# dd if=/dev/zero of=/dev/null bs=1024k count=1024
1024+0 records in
1024+0 records out
1073741824 bytes transferred in 3.414659 secs (314450672 bytes/sec)