virtualbox.org

Hi,
I'd like to ask about a performance. I use linux as a guest os and vista home premium as a host. I noticed that dd on linux works very slowly. Simple copying files is fast. I don't know why there are performance problems with dd commands. Is there any any solution?

regards
Jack

Can you quantify this with any performance data?

armuser wrote:I don't know why there are performance problems with dd commands.

quite simple, dd reads and then writes one by one byte, this is the default

specify dd if=<infile> of=<outfile> bs=<bytes>

bs=1M seems to work well inside vbox machines with virtual disks, in real life i use half of the HDD hardware cache size