Michael Schuh wrote:
# cd /; /usr/bin/time dd if=/dev/zero bs=1024 count=1024k of=zerofile;
I would only compare the performace from 2 Versions of FreeBSD, while
i mean that the performance from RELENG_5 is more slower than under
GENTOO and it is double as slow as under RELENG_4.

Let me guess: Intel ICH5 or 6300ESB south bridge and ATA disk (Seagate Barracuda 7200.7)?

There is something wrong in the RELENG_5 ATA driver that makes this combination perform really slow on writes (~16MB/s). When connecting a nearly identical SATA drive to the machine it performs as expected with ~55MB/s sequential writes.

RELENG_4 performs as expected and I think ATA mkIII in CURRENT also works.

/Martin

_______________________________________________
freebsd-stable@freebsd.org mailing list
http://lists.freebsd.org/mailman/listinfo/freebsd-stable
To unsubscribe, send any mail to "[EMAIL PROTECTED]"

Reply via email to