davidsen@sixhub.UUCP (Wm E. Davidsen Jr) (06/10/90)
I have noticed that the performance of tape can be hurt (a lot) by running find with the dump process. That is: find /usr2 -print | cpio -oc > /dev/xtape type stuff. By putting the list of files in a file, directory reads are minimized and the disk has a better chance of keeping the tape streaming. Another suggestion, minimize reads to the filename file. find /usr2 -print > /tmp/files.usr2 dd if=/tmp/files.usr2 ibs=20k | cpio -oc > /dev/xtape Note that by says "ibs" rather than "bs" dd will use two buffers, and there will be 512 bytes of filenames left to cpio while dd refills the names buffer. You can make the "ob=" size anything smaller than ib, and still get this. -- bill davidsen - davidsen@sixhub.uucp (uunet!crdgw1!sixhub!davidsen) sysop *IX BBS and Public Access UNIX moderator of comp.binaries.ibm.pc and 80386 mailing list "Stupidity, like virtue, is its own reward" -me