Re: dump performance - 4.6-RELEASE #0

2003-12-08 Thread Marc Wiz
On Wed, Dec 03, 2003 at 06:03:50PM +1000, Kevin Fleming wrote: I've done numerous tests with dump and different buffer sizes etc, but the maximum speed I can read from disk is approximately 14MB/s (measured by iostat). cpio / tar etc can read from disk at over 30MB/s .. Dump seems to

dump performance - 4.6-RELEASE #0

2003-12-03 Thread Kevin Fleming
I've done numerous tests with dump and different buffer sizes etc, but the maximum speed I can read from disk is approximately 14MB/s (measured by iostat). cpio / tar etc can read from disk at over 30MB/s .. Dump seems to spawn children (presumably for better IO) - is it possible to tweak the