Date: Tue, 17 Mar 2009 17:53:07 +0700 (ICT) From: Olivier Nicole <on@cs.ait.ac.th> To: ml@netfence.it Cc: freebsd-questions@freebsd.org Subject: Re: umass performance Message-ID: <200903171053.n2HAr7DF018080@banyan.cs.ait.ac.th> In-Reply-To: <49BF7F56.4080107@netfence.it> (message from Andrea Venturoli on Tue, 17 Mar 2009 11:45:42 %2B0100) References: <49BF7F56.4080107@netfence.it>
next in thread | previous in thread | raw e-mail | index | archive | help
> I'm using dd to clone an 8GB USB memory into an identical one. > > > > # dd if=/dev/da2 of=/dev/da1 > load: 0.01 cmd: dd 12026 [physwr] 0.00u 0.01s 0% 904k > 396+0 records in > 395+0 records out > 202240 bytes transferred in 1.453741 secs (139117 bytes/sec) > 15925248+0 records in > 15925248+0 records out > 8153726976 bytes transferred in 31722.194052 secs (257035 bytes/sec) > > > As you can see the process is VERY slow, taking nearly 9 hours. > Anything to try? Maybe it has something to do with the block size? Olivier
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?200903171053.n2HAr7DF018080>