On Mon, Jun 26, 2006 at 05:05:26PM +1000 I heard the voice of Michael Vince, and lo! it spake thus: > > According to pftop (with modulate state rules) I am able to get > about 85megs/sec when I don't have dd running. dd does indeed eats a > fair amount of cpu (40%) on the AMD64 6-stable machine.
dd does ridiculously small (512 byte?) read/writes, so it's gotta do a LOT of system calls and a lot of context switching when you don't give it a bigger blocksize. -- Matthew Fuller (MF4839) | [EMAIL PROTECTED] Systems/Network Administrator | http://www.over-yonder.net/~fullermd/ On the Internet, nobody can hear you scream. _______________________________________________ freebsd-performance@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-performance To unsubscribe, send any mail to "[EMAIL PROTECTED]"
