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Full Discussion: Parallel move keeping folder structure along with files in it
Top Forums Shell Programming and Scripting Parallel move keeping folder structure along with files in it Post 302999313 by Corona688 on Friday 16th of June 2017 04:59:16 PM
Old 06-16-2017
Your hard drive does not work in parallel. There is no point or benefit in running cp, mv, rsync, rm, rmdir, etc in parallel. They will still have to wait for each other. Trying to run them in parallel will actually slow it down and cause fragmentation. Don't do it.

Running tar in parallel - as in your other thread - only worked because bzip2 is so slow that the disk was waiting for the CPU, not vice versa. That's an unusual situation and not at all true of basic file utilities.
Last edited by Corona688; 06-16-2017 at 06:23 PM..
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LEARN ABOUT DEBIAN

vpo

VPO(4)							   BSD Kernel Interfaces Manual 						    VPO(4)

NAME

     vpo -- parallel to SCSI interface driver

SYNOPSIS

     device vpo

     For one or more SCSI busses:
     device scbus

DESCRIPTION

     The vpo driver provide access to parallel port Iomega Zip and Jaz drives.

HARDWARE

     The vpo driver supports the following parallel to SCSI interfaces:

     o	 Adaptec AIC-7110 Parallel to SCSI interface (built-in to Iomega ZIP drives)
     o	 Iomega Jaz Traveller interface
     o	 Iomega MatchMaker SCSI interface (built-in to Iomega ZIP+ drives)

USAGE

     The driver should let you use a printer connected to the drive while transferring data.

     DOS and FreeBSD file systems are supported.  When mounting a DOS file system or formating a FreeBSD file system, check the slice of the disk
     with the fdisk(8) utility.

     In order to unixify a ZIP disk, put the following in /etc/disktab:

     zip|zip 100:
	     :ty=removable:se#512:nc#96:nt#64:ns#32:
	     :pa#196608:oa#0:ba#4096:fa#512:
	     :pb#196608:ob#0:bb#4096:fb#512:
	     :pc#196608:oc#0:bc#4096:fc#512:

     and use bsdlabel(8).

     If you have trouble with your driver, your parallel chipset may not run properly at the detected mode (NIBBLE, PS2 or EPP).  Tune the ppc(4)
     bootflags to force other modes.

SEE ALSO

     da(4), lpt(4), ppbus(4), ppc(4), scsi(4)

HISTORY

     The vpo manual page first appeared in FreeBSD 3.0.

AUTHORS

     This manual page was written by Nicolas Souchu.

BUGS

     During boot, the driver first tries to detect a classic ZIP, then a ZIP+.	The ZIP+ detection is intrusive and may send erroneous characters
     to your printer if the drive is not connected to your parallel port.

BSD
								 December 14, 2004							       BSD
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