mismatch results with disk performance

[scuba at centroin.com.br]

Dmitry,

	Which is the chipset of your motherboard?
	I suspect it´s a problem with ICH5 drivers.
	Whith windowz OS they perform identical.

- Marcelo Souza

On Fri, 10 Jun 2005, Dmitry Mityugov wrote:

|On 6/9/05, scuba at centroin.com.br <scuba at centroin.com.br> wrote:
|> Dmitry,
|>
|>         Both situations have the same result, an Slave IDE HDD on primary
|> controller, or a master HDD on the 2nd IDE controler, works much more
|> slow, testing with 'dd'.
|>         I couldn't see that with diskinfo.
|
|I can't reproduce this. On a dual Xeon server with 2 PATA Seagate
|disks attached as masters to both IDE channels and a PATA CD-ROM as a
|slave on the 1st channel, reading them with dd procuces this:
|
|%dd if=/dev/ad0 of=/dev/null bs=1m count=20
|20+0 records in
|20+0 records out
|20971520 bytes transferred in 0.378772 secs (55367171 bytes/secs)
|%dd if=/dev/ad2 of=/dev/null bs=1m count=20
|20+0 records in
|20+0 records out
|20971520 bytes transferred in 0.364243 secs (57575625 bytes/secs)
|
|Please let me know if there is anything else I shall try to reproduce
|the problem.
|
|--
|Dmitry
|
|"We live less by imagination than despite it" - Rockwell Kent, "N by E"
|_______________________________________________
|freebsd-questions at freebsd.org mailing list
|http://lists.freebsd.org/mailman/listinfo/freebsd-questions
|To unsubscribe, send any mail to "freebsd-questions-unsubscribe at freebsd.org"
|


- Marcelo