Re: [RFS]: pcopy - a replacement for dd
At Sat, 2 Oct 2004 21:38:58 +0300,
George Danchev wrote:
> On Saturday 02 October 2004 21:25, Henrique de Moraes Holschuh wrote:
> > On Sat, 02 Oct 2004, George Danchev wrote:
> > > Desc: Pcopy is intended to be used when doing large disk(partition) to
> > > disk(partition) copying where dd is just too slow (and error prone).
> >
> > When DD is slow, it just mean you should be using raw devices (see the raw
> > command)... :)
>
> Thanks,
> I know about sct's raw utility (from the util-linux package ;-), but pcopy is
> a bit simpler and multithreaded copying program. Any objections, not to have
> pcopy included in the official archive ?
raw and O_DIRECT sometimes do not improve the performance because the
physical bus does not get tagged command queuing. One of idea to
decide your inclusion is to benchmark pcopy vs dd.
Regards,
-- gotom
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