On Mon, 2 May 2005, Eric Anderson wrote:
> I'll be honest here, I don't care much if the speed difference between > 4.X and 5.X is measureable, or whatever. What I find is a little > telling of an issue somewhere, is that READS are slower than WRITES! > This is totally bogus to me - dd'ing a file to a filesystem, then > umounting should take longer than dd'ing from the disk to /dev/null, it > nearly every config I can dream up. Maybe it's the speed at which > /dev/null can gobble bits (seems highly unlikely!), or maybe GEOM is > busy doing a check or some routine to data being accessed directly from > the disk device instead of through a filesystem? I don't know, but it > is an issue, and I'm sure we'll get nailed up to a fence in some > benchmark somewhere if we don't fix it.. dev-null is not the issue... my own written testprogram that only read up data to a buffer in memory showed the same results as doing a dd to dev-null. /Bjorn _______________________________________________ freebsd-performance@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-performance To unsubscribe, send any mail to "[EMAIL PROTECTED]"