On Thu, 28 Aug 2003, Kareem Shehata wrote:

When just dump the files directly from one drive to another, the performance is spot on: root at ttyp0[test]# dd if=/dev/hda1 of=shuttlepod.hda1 2260624+0 records in 2260624+0 records out 1157439488 bytes transferred in 64.225880 seconds (18021388 bytes/sec)

But the moment I stick gzip in the middle, is slows down by at least half:

root at ttyp0[test]# dd if=/dev/hda1 | gzip -1 > shuttlepod.hda1.gz

Have you considered: dd if=/dev/hda1 of=shuttlepod.hda1 | gzip -1 I believe you may see different performance with this. Also, any particular reason you're using dd rather than tar? I'm currently developing a CD which will (as one of its functions) backup Win* boxes (and allow easy recovery). When I'm finished this will be freely redistributable. I'll mention it on list when I'm done if anyone wants to download it. Rob -- Robert Brockway B.Sc. email: robert-5LEc/6Zm6xCUd8a0hrldnti2O/JbrIOy at public.gmane.org, zzbrock at uqconnect.net Linux counter project ID #16440 (http://counter.li.org) "The earth is but one country and mankind its citizens" -Baha'u'llah -- The Toronto Linux Users Group. Meetings: http://tlug.ss.org TLUG requests: Linux topics, No HTML, wrap text below 80 columns How to UNSUBSCRIBE: http://tlug.ss.org/subscribe.shtml