Date: Wed, 8 Sep 2004 12:29:03 +0200 From: "Bjoern Koenig" <bkoenig@cs.tu-berlin.de> To: <freebsd-current@freebsd.org> Subject: poor ATA disk speed with ICH2 Message-ID: <20040908102753.6B6A862D7@hoppel.local>
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Hello, first time I installed a beta of FreeBSD 5.3 I noticed very poor disk = speed. I built a kernel without this whole debugging stuff; but it remains bad. = I supposed that this issue depends on further debugging features which I didn't know. So I waited until UPDATING told that debugging options are removed from kernel and userland. Now I built a new kernel again and the disk speed is still unacceptable. Is there any further debugging option? Some facts: FreeBSD 5.3-BETA3 without any debugging: per char write: 13.78 MB/s (32.7% CPU usage) block write: 13.97 MB/s (12.8%) per char read: 22.31 MB/s (45.2%) block read: 37.44 MB/s (14.8%) FreeBSD 4.10-STABLE: per char write: 37.29 MB/s (75.7%) block write: 36.91 MB/s (28.7%) per char read: 38.53 MB/s (80.4%) block read: 37.45 MB/s (10.9%) (tested with bonnie, atacontrol shows UDMA100 both) Controller: Intel 82801BA (ICH2) Hard disk: Seagate ST380021A Best Regards Bj=F6rn K=F6nig
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