31 Oct
2007
31 Oct
'07
09:03
On Oct 30 2007 16:46, Aaron Kulkis wrote:
Because everyone knows that the disk drive/SATA-bus/controller/PCI-bus/DMA are the limiting factors in raw dd speed, so who cares how the kernel/app are compiled.
But dd doesn't write to disk... it writes to buffers held in RAM, and then forgets about it, letting the system flush the buffers out to disk when needed.
Yes, and that is the problem. As soon as your data set is bigger than the immediately available cache, write-out will happen and a speed drop will be visible. -- To unsubscribe, e-mail: opensuse+unsubscribe@opensuse.org For additional commands, e-mail: opensuse+help@opensuse.org