On Mon, Apr 16, 2007 at 10:47:24PM +0200, Gelsema, P (Patrick) wrote: > Goodevening lists, > > I am toying with Freebsd 7 to see if it will and how it runs on my new Asus > M2N mainboard. One of the things I noticed is that when running > 7.0-Current-200704 the throughput of the SCSI drive seems halved. When > running 6.2 throughput is doubled/normal. > > Throughput is measured with the following command. > > dd if=/dev/zero of=/usr/test > where /usr resides on da0s1f > > On 7.0 I get about 33MB/sec > On 6.2 I get about 69Mb/sec > > I did not make any changes, installation is fresh from CD with Minimal as > distribution. Apparently you weren't paying attention during boot, because 7.0 ships with heavy debugging options enabled, and tells you about it up front: "WARNING: WITNESS option enabled, expect reduced performance.\n"; Recompile your kernel with debugging options disabled before making performance comparisons. Kris
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